Trimming-free injection molding mold

Abstract

The invention relates to the technical field of mold production, in particular to a trimming-free injection molding mold which comprises a supporting plate, a lower mold body and an upper mold body, the lower mold body and the upper mold body are arranged on the supporting plate, an ejection assembly is arranged on the supporting plate, a plurality of molding grooves are formed in the lower mold body, and runners are formed between the molding grooves; trimming assemblies are arranged on the left side and the right side of the joint of the forming groove and the runner, air cooling assemblies are arranged at the front ends of the trimming assemblies, air supply assemblies are arranged at the left ends of the lower mold and the upper mold, the upper mold is lifted to drive the air supply assemblies to supply air into the lower mold, and the air supply assemblies drive the air cooling assemblies to cool plastic near a finished product firstly; the trimming assembly is driven by the air supply assembly to trim the finished product; the problems that finished products need to be trimmed after being discharged by existing equipment, the working procedures are tedious, and the production efficiency is reduced are solved.

Description

Technical Field

[0001] The invention relates to the technical field of mold production, in particular to a trim-free injection molding mold. Background Art

[0002] An injection mold is a tool for producing plastic products; it is also a tool for giving plastic products a complete structure and precise size. A Chinese invention patent with application announcement number CN116811125B discloses a spray-free injection mold, which includes a lower sealing plate, a lower mold, an upper mold, an upper sealing plate, and a cleaning structure. The high-pressure airflow is converted into a high-pressure swirl through a swirl component, which is convenient for comprehensive cleaning of the residue in the injection cavity, and has the effect of improving the production efficiency and molding quality of the product; a Chinese invention patent with application announcement number CN109968569B discloses an efficient trimming device for air-conditioning plastic parts, including a box body, a fixing plate, a T-bar, and a sleeve; the trimming angle of the trimming device can be adjusted according to different plastic parts during use, which reduces the labor intensity of workers, and the trimming roller is exposed only on one side for work during trimming, and is not exposed when idling, which effectively increases the safety during work.

[0003] However, the inventors have found that in actual use, the finished products need to be trimmed after being cut, which is a complicated process and reduces production efficiency. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies in the prior art by arranging trimming components on both sides of the junction of the molding groove and the runner, driving the air supply component to supply air to the lower mold by lifting the upper mold, driving the air cooling component by the air supply component to first cool the plastic near the finished product, and driving the trimming component by the air supply component to trim the finished product, thereby solving the problem that the existing equipment needs to trim the finished product after unloading, the process is relatively cumbersome, and the production efficiency is reduced.

[0005] In view of the above technical problems, the technical solutions adopted by the present invention are as follows: A trimming-free injection molding mold comprises a support plate, a lower mold and an upper mold arranged on the support plate, the support plate is provided with an ejection assembly, the lower mold is provided with a plurality of molding grooves, flow channels are provided between the molding grooves, trimming assemblies are provided on both sides of the junction between the molding grooves and the flow channels, air cooling assemblies are provided at the front ends of the trimming assemblies, and air supply assemblies are provided at the left ends of the lower mold and the upper mold. The upper mold is lifted to drive the air supply assembly to supply air to the lower mold, the air supply assembly drives the air cooling assembly to first cool the plastic near the finished product, and the air supply assembly drives the trimming assembly to trim the finished product.

[0006] As a preference, a sliding groove is provided at the junction of the molding groove and the flow channel, a rotating groove is provided at the front end of the sliding groove, and a gas transmission channel is provided at the rear end of the sliding groove.

[0007] As a preference, the lower die is provided with a plurality of ejection channels.

[0008] Preferably, the ejection assembly includes a top plate arranged at the lower end of the lower mold, a plurality of ejection rods arranged on the top plate, and a plurality of springs arranged at the lower end of the top plate.

[0009] Preferably, the trimming assembly comprises a telescopic rod slidably arranged in a sliding groove, a fixed block arranged at the front end of the telescopic rod and a cutter arranged on one side of the fixed block, and a rack is arranged on the other side of the fixed block.

[0010] Preferably, the air cooling assembly comprises a rotating member rotatably arranged in a rotating groove and a gear arranged on the rotating member, an air supply channel is provided in the rotating member, and an air outlet is provided on a side wall of the rotating member.

[0011] Preferably, the air supply assembly includes a support frame arranged on the lower mold, a cylinder arranged on the support frame, a fixed frame arranged on the upper mold and a piston rod arranged on the fixed frame, an air pipe is arranged on one side of the cylinder, and the air pipe is connected to the air supply channel.

[0012] As another preferred embodiment, an injection port is provided at an upper end portion of the upper mold, and an injection channel is provided at a lower end portion of the injection port.

[0013] Beneficial effects of the present invention: In the present invention, trimming components are arranged on both sides of the junction of the forming groove and the flow channel, the upper mold is lifted to drive the air supply component to supply air to the lower mold, and the air supply component drives the trimming component to trim the finished product, thereby improving production efficiency.

[0014] In the present invention, the air supply component drives the air cooling component to first cool down the plastic near the finished product, so that when the trimming component trims the finished product, the plastic around the finished product has solidified and will not affect the molding of the finished product.

[0015] In summary, the equipment has the advantage of improving production efficiency and is particularly suitable for the field of mold production technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structure of a trim-free injection mold for a food container; Figure 2 A schematic cross-sectional view of a trim-free injection mold for a food container; Figure 3 It is a structural schematic diagram of the lower mold; Figure 4 for Figure 3 A in the enlarged view; Figure 5 It is a cross-sectional schematic diagram of the lower die; Figure 6 for Figure 5 The enlarged view of point B in the figure; Figure 7 It is a schematic diagram of the structure of the trimming component and the air cooling component; Figure 8 This is a schematic cross-sectional view of the upper die.

[0018] 1. Support plate; 2. Lower mold; 3. Upper mold; 4. Ejector assembly; 5. Trimming assembly; 6. Air cooling assembly; 7. Air supply assembly; 21. Molding groove; 22. Runner; 23. Sliding groove; 24. Rotating groove; 25. Air supply channel; 26. Ejector channel; 31. Injection port; 32. Injection channel; 41. Top plate; 42. Ejector rod; 43. Spring; 51. Telescopic rod; 52. Fixed block; 53. Cutter; 54. Rack; 61. Rotating part; 62. Gear; 63. Air supply channel; 64. Air outlet; 71. Support frame; 72. Cylinder; 73. Fixed frame; 74. Piston rod; 75. Air pipe. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings. Embodiment 1

[0020] like Figures 1 to 8 As shown, a trimming-free injection molding mold includes a support plate 1, a lower mold 2 and an upper mold 3 arranged on the support plate 1, an ejection component 4 is arranged on the support plate 1, a plurality of molding grooves 21 are opened on the lower mold 2, and flow channels 22 are opened between the molding grooves 21, and trimming components 5 are arranged on the left and right sides of the connection between the molding grooves 21 and the flow channels 22, and air cooling components 6 are arranged at the front ends of the trimming components 5, and air supply components 7 are arranged at the left ends of the lower mold 2 and the upper mold 3. The upper mold 2 is lifted to drive the air supply component 7 to supply air to the lower mold 2, and the air supply component 7 drives the air cooling component 6 to first cool the plastic near the finished product, and the air supply component 7 drives the trimming component 5 to trim the finished product.

[0021] It is worth mentioning here that by arranging trimming components 5 on both sides of the junction of the molding groove 21 and the flow channel 22, the upper mold 2 is lifted to drive the air supply component 7 to supply air to the lower mold 3, and the air supply component 7 drives the trimming component 5 to trim the finished product, thereby improving production efficiency; the air supply component 7 drives the air cooling component 6 to first cool down the plastic near the finished product, so that when the trimming component 5 trims the finished product, the plastic around the finished product has solidified, which will not affect the molding of the finished product.

[0022] like Figure 3 , Figure 4 , Figure 5 As shown, a sliding groove 23 is provided at the junction of the forming groove 21 and the flow channel 22 , a rotating groove 24 is provided at the front end of the sliding groove 23 , and a gas delivery channel 25 is provided at the rear end of the sliding groove 23 .

[0023] like Figure 5 As shown, the lower mold 2 is provided with a plurality of ejection channels 26 .

[0024] like Figure 5 As shown, the ejector assembly 4 includes a top plate 41 disposed at the lower end of the lower mold 2 , a plurality of ejector rods 42 disposed on the top plate 41 , and a plurality of springs 43 disposed at the lower end of the top plate 41 .

[0025] In this example, the ejector rod 42 is pressed into the ejector passage 26 when the upper mold 3 is pressed down. When the upper mold 3 is lifted, the ejector rod 42 is reset by the spring 43 to drive the ejector rod 42 to rise, thereby driving the finished product to be demolded.

[0026] like Figure 7 As shown, the trimming assembly 5 includes a telescopic rod 51 slidably arranged in the sliding groove 23, a fixed block 52 arranged at the front end of the telescopic rod 51, and a cutter 53 arranged on one side of the fixed block 52, and a rack 54 is arranged on the other side of the fixed block 52.

[0027] In this embodiment, the two sets of racks 54 are staggered, and the racks 54 are longer than the cutters 53 , so they can drive the rotating member 61 to rotate in advance, so that the plastic near the finished product can be cooled first.

[0028] like Figure 4 , Figure 6 , Figure 7 As shown, the air cooling assembly 6 includes a rotating member 61 rotatably disposed in the rotating groove 24 and a gear 62 disposed on the rotating member 61 . An air supply channel 63 is provided in the rotating member 61 , and an air outlet hole 64 is provided on a side wall of the rotating member 61 .

[0029] like Figure 2 , Figure 8As shown, the air supply assembly 7 includes a support frame 71 arranged on the lower mold 2, a cylinder 72 arranged on the support frame 71, a fixing frame 73 arranged on the upper mold 3, and a piston rod 74 arranged on the fixing frame 73. An air pipe 75 is arranged on one side of the cylinder 72, and the air pipe 75 is connected to the air supply channel 25.

[0030] like Figure 2 , Figure 8 As shown, an injection port 31 is provided at the upper end of the upper mold 3 , and an injection channel 32 is provided at the lower end of the injection port 31 .

[0031] The laminating machine drives the upper mold 3 to press down and close the mold with the lower mold 2, and the plastic is injected into the injection port 31 through the injection molding machine, and the plastic is injected into the flow channel 22 through the injection channel 32, and the plastic is sent to the molding groove 21 through the flow channel 22 to complete the injection molding; When the upper mold 3 is lifted, the piston rod 74 is driven to rise, thereby driving the gas in the cylinder 72 to be injected into the gas delivery channel 25, and the telescopic rod 51 is pushed by the gas to move toward the flow channel 22, thereby driving the cutter 53 and the rack 54 to move toward the flow channel 22, and the rotating member 61 is driven to rotate by the rack 54, and the air outlet 64 is aligned with the flow channel 22, and the gas is blown out from the air outlet 64 to cool the plastic near the finished product, and then the cutter 53 is moved out to trim the finished product, and the telescopic rod 51 is reset by pressing the upper mold 3 downward to close the mold, thereby driving the rotating member 61 to rotate and hiding the air outlet 64.

[0032] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A trim-free injection molding mold, comprising a support plate (1), a lower mold (2) and an upper mold (3) arranged on the support plate (1), characterized in that: The support plate (1) is provided with an ejector assembly (4), the lower mold (2) is provided with a plurality of molding grooves (21), flow channels (22) are provided between the molding grooves (21), trimming assemblies (5) are provided on both sides of the junction between the molding grooves (21) and the flow channels (22), the front ends of the trimming assemblies (5) are provided with air cooling assemblies (6), and the lower mold (2) and the left ends of the upper mold (3) are provided with air supply assemblies (7), and the upper mold (2) is lifted to drive the air supply assembly (7) to supply air into the lower mold (2), and the air supply assembly (7) drives the air cooling assembly (6) to first cool down the plastic near the finished product, and the air supply assembly (7) drives the trimming assembly (5) to trim the finished product.

2. The trim-free injection molding mold according to claim 1, characterized in that: A sliding groove (23) is provided at the junction of the molding groove (21) and the flow channel (22), a rotating groove (24) is provided at the front end of the sliding groove (23), and a gas transmission channel (25) is provided at the rear end of the sliding groove (23).

3. The trim-free injection molding mold according to claim 1, characterized in that: The lower mold (2) is provided with a plurality of ejection channels (26).

4. The trim-free injection molding mold according to claim 1, characterized in that: The ejection assembly (4) comprises a top plate (41) arranged at the lower end of the lower mold (2), a plurality of ejection rods (42) arranged on the top plate (41), and a plurality of springs (43) arranged at the lower end of the top plate (41).

5. The trim-free injection molding mold according to claim 1, characterized in that: The trimming assembly (5) comprises a telescopic rod (51) slidably arranged in a sliding groove (23), a fixed block (52) arranged at the front end of the telescopic rod (51), and a cutter (53) arranged on one side of the fixed block (52); a rack (54) is arranged on the other side of the fixed block (52).

6. The trim-free injection molding mold according to claim 1, characterized in that: The air cooling component (6) comprises a rotating member (61) rotatably arranged in a rotating groove (24) and a gear (62) arranged on the rotating member (61); an air supply channel (63) is provided in the rotating member (61); and an air outlet hole (64) is provided on a side wall of the rotating member (61).

7. The trim-free injection molding mold according to claim 1, characterized in that: The air supply assembly (7) comprises a support frame (71) arranged on the lower mold (2), a cylinder (72) arranged on the support frame (71), a fixing frame (73) arranged on the upper mold (3), and a piston rod (74) arranged on the fixing frame (73); an air pipe (75) is arranged on one side of the air cylinder (72); and the air pipe (75) is connected to the air supply channel (25).

8. The trim-free injection molding mold according to claim 1, characterized in that: An injection port (31) is provided at the upper end of the upper mold (3), and an injection channel (32) is provided at the lower end of the injection port (31).

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