Rapid mold for plastic packaging box

Abstract

The utility model relates to a plastic packing box rapid mold which comprises a mold core fixing plate, a mold cavity fixing plate, a mold cavity block and a mold core block, the mold cavity block and the mold core block are provided with forming faces, the mold cavity block is arranged on the mold cavity fixing plate, the mold core block is arranged on the mold core fixing plate, the plastic packing box rapid mold further comprises an ejection block with a forming face, and the ejection block is arranged on the mold core block. An air outlet hole is formed in the ejection block, a first air inlet channel is formed in the mold core block, the first air inlet channel is communicated with the air outlet hole, and one end, far away from the air outlet hole, of the first air inlet channel is connected with an air source. Compressed gas is provided through the gas source, the compressed gas is sprayed out towards one side of the gas outlet through the first gas inlet channel, the plastic packaging box is subjected to demolding ejection, the plastic packaging box is subjected to ejection demolding through the compressed gas, the possibility of damage to the plastic packaging box is reduced, and the demolding efficiency of the plastic packaging box is improved; and the production of the plastic packaging box is quicker, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of injection molding of packaging boxes, in particular to a rapid mold for a plastic packaging box. Background Art

[0002] A take-away box refers to a box used for packaging items once and for all. Most of the disposable packaging boxes on the market are disposable packaging boxes that are formed in one go by injection molding. Take-away boxes are not only convenient and practical, but also can store food in different categories.

[0003] The utility model with publication number CN216860447U relates to a food plastic box mold that can be quickly demolded, including a fixed mold and a movable mold, the movable mold including a top plate, a tie rod, a tie rod fixing plate, a tie rod support plate and a cavity, the fixed mold including a core, an ejector rod, a push rod support plate, an ejector fixing plate and a core fixing plate, a nozzle is provided on the surface of the top plate, the middle of the nozzle is an injection port, one end of the nozzle passes through the tie rod fixing plate and the tie rod support plate in sequence, and is connected to the core fixing plate, a cavity fixing plate is installed on the surface of the cavity, a receiving groove for receiving the cavity is provided inside the cavity fixing plate, the core is located on the surface of the core fixing plate, and an ejector device for ejecting a workpiece is provided inside the core.

[0004] The injection mold in the above technical solution drives the ejector rod to eject the workpiece from the surface of the core through the ejector motor to complete the demoulding work; however, in the process of the ejector rod moving from the core to ejecting the plastic packaging box, the moving stroke of the ejector rod is long, which makes the demoulding and ejection efficiency of the ejector rod low; Figure 5 The plastic packaging box of the embodiment of the present application has a thin wall thickness, and the plastic packaging box is ejected by a push rod or a push pin, which can easily puncture the product and cause waste of the product. Utility Model Content

[0005] In order to improve the injection molding efficiency of a plastic packaging box, the present application provides a plastic packaging box rapid mold.

[0006] The present application provides a plastic packaging box rapid mold adopting the following technical solution:

[0007] A plastic packaging box rapid mold comprises a core fixing plate, a cavity fixing plate, a cavity block and a core block with a molding surface, wherein the cavity block is arranged on the cavity fixing plate, and the core block is arranged on the core fixing plate. The mold further comprises an ejector block with a molding surface, wherein the ejector block is arranged on the core block, an air outlet is provided on the ejector block, and a first air inlet channel is provided on the core block, wherein the first air inlet channel is connected to the air outlet, and an end of the first air inlet channel away from the air outlet is connected to an air source.

[0008] By adopting the above technical solution, compressed gas is provided by an air source, so that the compressed gas is ejected toward the side of the air outlet through the first air inlet channel, and the plastic packaging box is demoulded and ejected. The plastic packaging box is ejected and demoulded by compressed gas, which reduces the possibility of damage to the plastic packaging box, increases the demoulding efficiency of the plastic packaging box, and makes the production of plastic packaging boxes faster, thereby improving production efficiency.

[0009] Preferably, an air outlet ring groove is provided on the side surface of the core block facing the ejection block, and a gap is provided between the circumferential edge of the ejection block and the core block, and the gap is connected to the air outlet ring groove. A second air inlet channel is provided on the core block, and the second air inlet channel is connected to the air outlet ring groove. One end of the second air inlet channel away from the air outlet ring groove is connected to an air source.

[0010] By adopting the above technical solution, compressed gas is provided through the air, so that the compressed gas passes through the second air inlet channel to the air outlet ring groove, and is ejected from the gap between the circumferential edge of the ejection block and the core block. The plastic packaging box is demoulded and ejected uniformly from the circumference by the compressed gas, which reduces the possibility of damage to the plastic packaging box, increases the demoulding efficiency of the plastic packaging box, makes the production of the plastic packaging box faster, and improves the production efficiency.

[0011] Preferably, there are several cavity blocks and several core blocks respectively, and the several cavity blocks correspond to the several core blocks. The several cavity blocks are distributed on the cavity fixing plate in a rectangular array, and the several core blocks are distributed on the core fixing plate in a rectangular array.

[0012] By adopting the above technical solution, multiple groups of cavity blocks and core blocks are simultaneously used for injection molding, thereby improving production efficiency. The same production process is used for products between different cavities, which reduces errors in the production process and reduces production costs.

[0013] Preferably, the gap gradually becomes farther away from the core fixing plate from a side close to the air outlet ring groove to a side far away from the air outlet ring groove.

[0014] By adopting the above technical solution, the possibility of damage to the plastic packing box is reduced, the demoulding efficiency of the plastic packing box is increased, the production of the plastic packing box is faster, and the production efficiency is improved.

[0015] Preferably, it also includes a spring, the ejector block is slidably connected to the core block along the mold opening direction of the mold, the two ends of the spring are respectively arranged on the ejector block and the core block, and the spring always drives the ejector block to slide toward one side of the core block.

[0016] By adopting the above technical solution, when the compressed gas flows through the air outlet ring groove, the air pressure in the air outlet ring groove is relatively large, so that the ejector block slides toward the side away from the core block, and the plastic packaging box is ejected a short distance, thereby reducing the possibility of the plastic packaging box being stuck on the core block. When the compressed gas drives the ejector block to slide toward the side away from the core block, the ejector block pulls the spring to cause elastic deformation of the spring. When the compressed gas stops, the spring recovers and drives the ejector block to slide toward the side of the core block until it abuts against the core block.

[0017] Preferably, the ejection block is provided with a docking ring, the docking ring is connected to the air outlet, the core block is provided with a docking groove which can be plugged into the docking ring, the docking groove is connected to the first air inlet channel, and when the ejection block is installed on the core block, the end of the docking ring away from the ejection block is always located in the docking groove.

[0018] By adopting the above technical solution, it is ensured that compressed gas can flow into the air outlet from the first air inlet channel, and the position of the ejector block on the core block can be limited, thereby reducing the possibility of deviation of the ejector block causing uneven wall thickness or material shortage of the plastic packaging box.

[0019] Preferably, the cavity fixing plate is fixedly connected to the cavity plate, a hot runner is provided on the cavity fixing plate, a plurality of nozzles are provided on the cavity fixing plate, the plurality of nozzles are respectively connected to the hot runner, a plurality of glue inlets are provided on the cavity block, the plurality of glue inlets are respectively connected to the corresponding plurality of nozzles, and the plurality of glue inlets are respectively connected to the corresponding plurality of nozzles.

[0020] By adopting the above technical solution, the time for the melt to fill the molding cavity is reduced by multi-point injection, so as to increase the efficiency of injection molding injection, so that the production of plastic packaging boxes is faster and the production efficiency is improved.

[0021] The technical effects of this utility model are mainly reflected in the following aspects:

[0022] 1. The utility model provides compressed gas through an air source by setting a first air inlet channel and an air outlet, so that the compressed gas is ejected toward one side of the air outlet through the first air inlet channel to demould and eject the plastic packaging box. The plastic packaging box is ejected and demoulded by compressed gas, which reduces the possibility of damage to the plastic packaging box, increases the demoulding efficiency of the plastic packaging box, makes the production of the plastic packaging box faster, and improves the production efficiency;

[0023] 2. The utility model provides compressed gas through the second air inlet channel, the air outlet ring groove and the gap, so that the compressed gas passes through the second air inlet channel to the air outlet ring groove and is ejected from the gap between the circumferential edge of the ejection block and the core block. The compressed gas is used to uniformly eject the plastic packaging box from the circumference, thereby reducing the possibility of damage to the plastic packaging box, increasing the demoulding efficiency of the plastic packaging box, making the production of the plastic packaging box faster and improving the production efficiency.

[0024] 3. The utility model provides a spring. When the compressed gas flows through the air outlet ring groove, the air pressure in the air outlet ring groove is relatively large, so that the ejection block slides toward the side away from the core block, and the plastic packaging box is ejected a short distance, thereby reducing the possibility of the plastic packaging box being stuck on the core block. When the compressed gas drives the ejection block to slide toward the side away from the core block, the ejection block pulls the spring to cause elastic deformation of the spring. When the compressed gas stops, the spring recovers and drives the ejection block to slide toward the side of the core block until it abuts against the core block. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0026] Figure 2 It is a schematic diagram of the structure of the first air intake passage of an embodiment of the present application.

[0027] Figure 3 is along Figure 2 Enlarged view of point A in the middle.

[0028] Figure 4 It is a schematic diagram of the core plate structure of an embodiment of the present application.

[0029] Figure 5 It is a schematic diagram of the product structure of the embodiment of the present application.

[0030] Explanation of the accompanying drawings: 1. Core fixing plate; 2. Cavity fixing plate; 21. Hot runner; 22. Nozzle; 3. Cavity block; 31. Glue inlet; 4. Core block; 41. Ejector block; 411. Air outlet; 412. Docking ring; 42. Air outlet ring groove; 43. Gap; 44. First air inlet channel; 45. Second air inlet channel; 46. Spring; 47. Docking groove; 5. Runner plate; 6. Plastic packaging box. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-5 The present application is further described in detail to make the technical solution of the present application easier to understand and grasp.

[0032] The embodiment of the present application discloses a rapid mold for a plastic packaging box.

[0033] Reference Figure 1 and Figure 2A plastic packaging box rapid mold of this embodiment includes a core fixing plate 1, a cavity fixing plate 2, and a cavity block 3 and a core block 4 with a molding surface. There are four cavity blocks 3 and four core blocks 4 respectively, and the four cavity blocks 3 correspond to the four core blocks 4. The four cavity blocks 3 are distributed in a rectangular array and fixedly connected to the cavity fixing plate 2, and the four core blocks 4 are distributed in a rectangular array and fixedly connected to the core fixing plate 1. The production efficiency is improved by performing injection molding simultaneously with multiple groups of cavity blocks 3 and core blocks 4. The same product manufacturing process between different cavities reduces errors in the production process and reduces production costs.

[0034] Reference Figure 1-Figure 4 , and also includes an ejector block 41 with a molding surface and a plurality of springs 46. The ejector block 41 is slidably connected to the core block 4 along the mold opening direction of the mold. The two ends of the plurality of springs 46 are respectively fixedly connected to the ejector block 41 and the core block 4. The plurality of springs 46 always drive the ejector block 41 to slide toward one side of the core block 4. The ejector block 41 is provided with a plurality of air outlet holes 411. The axial direction of the air outlet holes 411 is parallel to the mold opening direction of the mold. The ejector block 41 is fixedly connected with a plurality of docking rings 412. The plurality of docking rings 412 correspond to the plurality of air outlet holes 411 respectively. The plurality of docking rings 412 are coaxial and connected with the corresponding air outlet holes 411. The core block 4 is provided with a plurality of first air inlet channels 44. The plurality of first air inlet channels 44 are connected with the corresponding air outlet holes 411. The core block 4 is provided with a plurality of air inlet channels that can be connected with the air outlet holes 411. The docking ring 412 is plugged into the docking groove 47, and the docking groove 47 is connected to the first air inlet channel 44. When the ejection block 41 is installed on the core block 4, the end of the docking ring 412 away from the ejection block 41 is always located in the docking groove 47, ensuring that the compressed gas can flow from the first air inlet channel 44 into the air outlet 411, and the position of the ejection block 41 on the core block 4 can be limited, reducing the possibility of uneven wall thickness or lack of material in the plastic packaging box 6 caused by deviation of the ejection block 41. The end of the first air inlet channel 44 away from the air outlet 411 is connected to the air source.

[0035] Reference Figure 1-Figure 4 The compressed gas is provided by the gas source, so that the compressed gas is ejected toward the side of the gas outlet 411 through the first gas inlet channel 44 to demould the plastic packing box 6. The compressed gas is used to eject the plastic packing box 6, thereby reducing the possibility of damage to the plastic packing box 6 and increasing the demoulding efficiency of the plastic packing box 6, so that the production of the plastic packing box 6 is faster and the production efficiency is improved.

[0036] Reference Figure 1-Figure 4The core block 4 is provided with an air outlet ring groove 42 on one side thereof facing the ejection block 41, and a gap 43 is provided between the circumferential edge of the ejection block 41 and the core block 4, the gap 43 is connected to the air outlet ring groove 42, and the gap 43 gradually becomes farther from the core fixing plate 1 from the side close to the air outlet ring groove 42 to the side away from the air outlet ring groove 42. The core block 4 is provided with a second air inlet channel 45, the second air inlet channel 45 is connected to the air outlet ring groove 42, and the end of the second air inlet channel 45 away from the air outlet ring groove 42 is connected to the air source.

[0037] Reference Figure 1-Figure 4 , compressed gas is provided by air, so that the compressed gas passes through the second air inlet channel 45 to the air outlet ring groove 42, and is ejected from the gap 43 between the circumferential edge of the ejection block 41 and the core block 4, and the plastic packaging box 6 is demoulded and ejected uniformly from the circumference by the compressed gas, reducing the possibility of damage to the plastic packaging box 6, increasing the demoulding efficiency of the plastic packaging box 6, making the production of the plastic packaging box 6 faster and improving the production efficiency. When the compressed gas flows through the air outlet ring groove 42, the air pressure in the air outlet ring groove 42 is relatively large, so that the ejection block 41 slides toward the side away from the core block 4, and the plastic packaging box 6 is ejected a short distance, reducing the possibility of the plastic packaging box 6 being stuck on the core block 4. When the compressed gas drives the ejection block 41 to slide toward the side away from the core block 4, the ejection block 41 pulls the spring 46 to cause the spring 46 to undergo elastic deformation. When the compressed gas stops, the spring 46 recovers and drives the ejection block 41 to slide toward the side of the core block 4 until it abuts against the core block 4.

[0038] Reference Figure 1 and Figure 2 , and also includes a runner plate 5, on which a gate is provided, a cavity fixing plate 2 is fixedly connected to the cavity plate, a hot runner 21 is provided on the cavity fixing plate 2, and the hot runner 21 is connected to the gate, a plurality of nozzles 22 are fixedly connected to the cavity fixing plate 2, and the plurality of nozzles 22 are respectively connected to the hot runner 21, and a plurality of glue inlets 31 are provided on the cavity block 3, and the plurality of glue inlets 31 are respectively connected to the corresponding plurality of nozzles 22, and the plurality of glue inlets 31 are respectively connected to the corresponding plurality of nozzles 22. By multi-point glue injection, the time for the melt to fill the molding cavity is reduced to increase the efficiency of injection molding glue injection, so that the production of the plastic packaging box 6 is faster and the production efficiency is improved.

[0039] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A plastic packaging box rapid mold, comprising a core fixing plate (1), a cavity fixing plate (2), a cavity block (3) with a molding surface, and a core block (4), wherein the cavity block (3) is arranged on the cavity fixing plate (2), and the core block (4) is arranged on the core fixing plate (1), characterized in that: The molded mold further comprises an ejector block (41) with a molding surface, the ejector block (41) being arranged on the core block (4), an air outlet hole (411) being provided on the ejector block (41), a first air inlet channel (44) being provided on the core block (4), the first air inlet channel (44) being connected to the air outlet hole (411), and an end of the first air inlet channel (44) away from the air outlet hole (411) being connected to an air source.

2. A plastic packaging box rapid mold according to claim 1, characterized in that: An air outlet ring groove (42) is provided on a side surface of the core block (4) facing the ejection block (41); a gap (43) is provided between the circumferential edge of the ejection block (41) and the core block (4); the gap (43) is connected to the air outlet ring groove (42); a second air inlet channel (45) is provided on the core block (4); the second air inlet channel (45) is connected to the air outlet ring groove (42); and an end of the second air inlet channel (45) away from the air outlet ring groove (42) is connected to an air source.

3. A plastic packaging box rapid mold according to claim 2, characterized in that: A plurality of the cavity blocks (3) and core blocks (4) are provided respectively, and the plurality of the cavity blocks (3) correspond to the plurality of the core blocks (4). The plurality of the cavity blocks (3) are distributed on the cavity fixing plate (2) in a rectangular array, and the plurality of the core blocks (4) are distributed on the core fixing plate (1) in a rectangular array.

4. A plastic packaging box rapid mold according to claim 2, characterized in that: The gap (43) gradually becomes farther from the core fixing plate (1) from a side close to the air outlet ring groove (42) to a side far away from the air outlet ring groove (42).

5. The rapid mold for a plastic packaging box according to claim 2, characterized in that: The mold further comprises a spring (46), wherein the ejector block (41) is slidably connected to the core block (4) along the mold opening direction of the mold, and the two ends of the spring (46) are respectively arranged on the ejector block (41) and the core block (4), and the spring (46) always drives the ejector block (41) to slide toward one side of the core block (4).

6. A plastic packaging box rapid mold according to claim 5, characterized in that: The ejection block (41) is provided with a docking ring (412), the docking ring (412) is connected to the air outlet (411), the core block (4) is provided with a docking groove (47) which can be plugged into and matched with the docking ring (412), the docking groove (47) is connected to the first air inlet channel (44), and when the ejection block (41) is mounted on the core block (4), one end of the docking ring (412) away from the ejection block (41) is always located in the docking groove (47).

7. The rapid mold for a plastic packaging box according to claim 1, characterized in that: The cavity fixing plate (2) is fixedly connected to the cavity plate, a hot runner (21) is provided on the cavity fixing plate (2), a plurality of nozzles (22) are provided on the cavity fixing plate (2), the plurality of nozzles (22) are respectively connected to the hot runner (21), the cavity block (3) is provided with a plurality of glue inlets (31), the plurality of glue inlets (31) are respectively connected to the corresponding plurality of nozzles (22), and the plurality of glue inlets (31) are respectively connected to the corresponding plurality of nozzles (22).

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