Biodegradable lunch box injection mold ejector pin mechanism and injection mold

Abstract

The ejector pin mechanism comprises a platform plate, the upper side of the platform plate is fixedly connected with an air pump, four air conveying pipes which are circumferentially and equidistantly distributed are arranged outside the air pump, four ejector pin modules which are circumferentially and equidistantly distributed are arranged on the upper side of the platform plate, and the ejector pin modules are arranged on the upper side of the platform plate. The ejector pin module comprises four ejector pipes, round holes are formed in the four ejector pipes, one ends of four air conveying pipes are fixedly connected with the round holes in the four ejector pipes respectively, and the other ends of the four air conveying pipes are connected with the output end of the air pump through guide pipes. When the ejector pin mechanism of the biodegradable meal box injection mold and the injection mold disclosed by the utility model are used, the air pump is started, and air passes through the air delivery pipe and the top cover and is rotationally ejected after being subjected to wind power, so that the condition that a finished product is adhered to the ejector pin, is not separated from the ejector pin and even is damaged due to tearing when being separated from the mold is avoided.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to an ejector pin mechanism of a biodegradable lunch box injection mold and an injection mold. Background Art

[0002] Injection molds are tools for producing plastic products and also tools for giving plastic products complete structures and precise dimensions. Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, it refers to the process of injecting heated and melted plastic into the mold cavity under high pressure by an injection molding machine, and then cooling and solidifying to obtain a molded product.

[0003] Under the existing technology, the demoulding of the injection mold usually uses an ejector pin to lift the molded product from the mold to separate the product. Since the ejector pin is generally in direct contact with the product during injection molding, it is easy for the ejector pin to stick to the product when demoulding it or even tear the product. Utility Model Content

[0004] The utility model discloses an ejector mechanism of a biodegradable lunch box injection mold and an injection mold, aiming to solve the technical problem that when the ejector demoulds the finished product, the finished product adheres to the ejector without being separated or even is torn.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a biodegradable lunch box injection mold ejector mechanism, comprising a platform plate, an air pump is fixedly connected to the upper side of the platform plate, and four circumferentially equidistantly distributed air pipes are arranged outside the air pump, and four circumferentially equidistantly distributed ejector modules are arranged on the upper side of the platform plate, the ejector module comprises an ejector pipe, circular holes are opened on the four ejector pipes, and one end of the four air pipes are respectively fixedly connected to the circular holes on the four ejector pipes, and the other ends of the four air pipes are connected to the output end of the air pump through a conduit.

[0006] By providing the ejector module, the air pump and the ejector pipe, when the device is in use, the air pump is started, and the gas passes through the gas pipe. The air pressure in the gas pipe increases to lift the top cover, and the air guide plate on the top cover rotates after being blown by the wind, so that the top cover is separated from the finished product, avoiding the finished product from sticking to the top cover during separation, thereby ensuring the molding quality and appearance integrity of the finished product and improving the customer's viewing experience.

[0007] In a preferred solution, the inner walls of the four top pipes are fixedly connected with a circular plate, the circular plate is provided with a plurality of equidistantly distributed air holes, the upper side of the circular plate is fixedly connected with a spring, the end of the spring away from the circular plate is fixedly connected with a circular shaft, the upper side of the circular shaft is movably connected with a top cover, the bottom of the top cover is provided with a plurality of circumferentially equidistantly distributed air guide grooves, the bottom of the top cover is fixedly connected with a plurality of circumferentially equidistantly distributed air guide plates, and the outside of the top cover is in contact with the upper side of the top pipe on the same side.

[0008] By providing the ventilation holes, springs, top cover, air guide plates and air guide grooves, when the device is in use, wind will blow toward the top cover through the ventilation holes, and the air guide plates and air guide grooves on the top cover will cause the top cover to rotate and be ejected under the action of wind force. After the finished product is ejected, the top cover will continue to return to its original position under the pulling force of the spring, so that the finished product will fall off, thereby improving production efficiency.

[0009] A biodegradable lunch box injection mold, comprising the ejector mechanism of the biodegradable lunch box injection mold as described above, and also comprising a base, wherein the upper side of the base is fixedly connected with four symmetrical hydraulic rods, the output ends of the four hydraulic rods are fixedly connected with the same lower mold, the upper side of the lower mold is fixedly connected with two symmetrical cylinders, and an upper mold is arranged above the lower mold, the bottom of the upper mold is provided with a circular groove, the circular groove is located directly above the upper cylinder of the lower mold, the upper side of the lower mold is provided with a circular hole, and the inside of the circular hole is fixedly connected with an injection molding machine; the outside of the base is fixedly connected with two symmetrical guide plates, the opposite sides of the two guide plates are fixedly connected with the outside of the upper mold, the guide plates are provided with two strip grooves, and the outside of the lower mold The upper part is fixedly connected with four symmetrical tenons, and the tenons are slidably connected to the inside of the strip groove; a slide groove is opened on one side of the upper mold, and a slider is slidably connected in the slide groove, and a moving block is fixedly connected to the outside of the slider, and a bracket is fixedly connected to the side of the moving block away from the slide groove; the bracket is fixedly connected with a base on the side close to the lower mold, and the other side of the bracket is fixedly connected with a motor, the output end of the motor is connected with a short shaft through a coupling, and the other end of the short shaft passes through the base and is fixedly connected to a fan, and the fan is located inside the base; a hydraulic rod 2 is fixedly connected to the upper side of the base, and the output end of the hydraulic rod 2 is fixedly connected to the bottom of the platform plate, and four holes equidistantly distributed around the circumference are opened on the lower mold, and the top pipes are slidably connected to the inside of the holes.

[0010] By setting up a motor, a fan, a bracket, a hydraulic rod, an upper mold and a lower mold, when the injection molding is completed, the hydraulic rod moves the lower mold downward, and the finished product will be brought out downward. The motor drives the fan to rotate to continue to provide cooling for the finished product to prevent the finished product from continuing to stick to the mold due to insufficient cooling when it comes out, and the finished product will be damaged during ejection, causing economic losses.

[0011] As can be seen from the above, the ejector mechanism of the biodegradable lunch box injection mold and the injection mold provided by the utility model have a device. When in use, the ejector mechanism is usually used to separate the injection-molded product from the mold. However, the ejector mechanism is also in direct contact with the finished product during injection molding, thereby avoiding the technical effect that the finished product sticks to the ejector when it is separated from the mold, fails to separate from the ejector, or even tears the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1This is a schematic diagram of the ejector module structure of an ejector mechanism of an injection mold for a biodegradable lunch box proposed by the utility model;

[0013] Figure 2 This is a schematic diagram of the cross-sectional structure of an ejector tube of an ejector pin mechanism of an injection mold for a biodegradable lunch box proposed by the utility model;

[0014] Figure 3 This is a schematic diagram of the overall structure of a biodegradable lunch box injection mold proposed by the utility model;

[0015] Figure 4 This is a schematic diagram of the fan structure of a biodegradable lunch box injection mold proposed by the utility model;

[0016] Figure 5 The utility model is a schematic diagram of the cross-sectional structure of a biodegradable lunch box injection mold.

[0017] In the attached figure: 1. injection molding machine; 2. upper mold; 3. bracket; 4. lower mold; 5. hydraulic rod one; 6. base; 7. hydraulic rod two; 8. guide plate; 9. slide; 10. air pump; 11. air pipe; 12. ejector module; 1201. ejector pipe; 1202. round plate; 1203. vent hole; 1204. spring; 1205. air guide plate; 1206. top cover; 1207. air guide slot; 13. platform plate; 14. fan; 15. motor; 16. base; 17. moving block. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] The utility model discloses an ejector pin mechanism of a biodegradable lunch box injection mold and an injection mold, which are mainly used in the scenario where the finished product is adhered to the ejector pin and cannot be separated when the ejector pin demoulds the finished product.

[0020] Reference Figure 1-Figure 2 A biodegradable lunch box injection mold ejector mechanism includes a platform plate 13, an air pump 10 is connected to the upper side of the platform plate 13 by bolts, and four circumferentially equidistantly distributed air pipes 11 are arranged outside the air pump 10, and four circumferentially equidistantly distributed ejector modules 12 are arranged on the upper side of the platform plate 13, the ejector module 12 includes an ejector pipe 1201, and circular holes are opened on the four ejector pipes 1201, and one end of the four air pipes 11 is respectively connected to the circular holes on the four ejector pipes 1201 by bolts, and the other ends of the four air pipes 11 are connected to the output end of the air pump 10 by conduits.

[0021] In a preferred embodiment, the inner walls of the four top pipes 1201 are connected to a circular plate 1202 by bolts, and a plurality of equidistantly distributed air holes 1203 are provided on the circular plate 1202. The upper side of the circular plate 1202 is connected to a spring 1204 by bolts, and the end of the spring 1204 away from the circular plate 1202 is connected to a circular shaft by bolts, and the upper side of the circular shaft is rotatably connected to a top cover 1206 through a bearing, and a plurality of circumferentially equidistantly distributed air guide grooves 1207 are provided at the bottom of the top cover 1206, and a plurality of circumferentially equidistantly distributed air guide plates 1205 are connected to the bottom of the top cover 1206 by bolts, and the outside of the top cover 1206 is in contact with the upper side of the top pipe 1201 on the same side.

[0022] Reference Figure 3-Figure 5 A biodegradable lunch box injection mold, comprising a biodegradable lunch box injection mold ejector mechanism as described above, and also comprising a base 6, the upper side of the base 6 is connected with four symmetrical hydraulic rods 5 by bolts, the output ends of the four hydraulic rods 5 are connected with the same lower mold 4 by bolts, the upper side of the lower mold 4 is connected with two symmetrical cylinders by bolts, and an upper mold 2 is arranged above the lower mold 4, the bottom of the upper mold 2 is provided with a circular groove, the circular groove is located directly above the upper cylinder of the lower mold 4, the upper side of the lower mold 4 is provided with a circular hole, and the inside of the circular hole is connected with an injection molding machine 1 by bolts; the outside of the base 6 is connected with two symmetrical guide plates 8 by bolts, the opposite sides of the two guide plates 8 are connected with the outside of the upper mold 2 by bolts, the guide plates 8 are provided with two strip grooves, and the outside of the lower mold 4 is connected with four symmetrical tenons by bolts, and the tenons are slidably connected to the strip grooves. The inside of the groove; a slide groove 9 is provided on one side of the upper mold 2, and a slider is slidably connected in the slide groove 9, and a moving block 17 is bolted to the outside of the slider, and the side of the moving block 17 away from the slide groove 9 is connected to the bracket 3 by bolts; the side of the bracket 3 close to the lower mold 4 is connected to the base 16 by bolts, and the other side of the bracket 3 is connected to the motor 15 by bolts, and the output end of the motor 15 is connected to the short shaft through a coupling, and the other end of the short shaft passes through the base 16 and is connected to the fan 14 by bolts, and the fan 14 is located inside the base 16; a hydraulic rod 27 is connected to the upper side of the base 6 by bolts, and the output end of the hydraulic rod 27 is connected to the bottom of the platform plate 13 by bolts, and four circumferentially equidistantly distributed holes are provided on the lower mold 4, and the top pipes 1201 are all slidably connected to the inside of the holes, and the guide plate 8 can make the mold docking more neat, prevent docking errors, and cause damage to the mold.

[0023] Working principle: When in use, first lift the lower mold 4 upward through the hydraulic rod 15, so that the lower mold 4 is aligned and tight with the upper mold 2, and then use the hydraulic rod 27 to make the top cover 1206 on the top pipe 1201 flush with the upper surface of the lower mold 4, and then use the injection molding machine 1 to perform injection molding in the mold. After completion, the lower mold 4 is brought down through the hydraulic rod 15, and the finished product molded on the lower mold 4 is brought out, and the hydraulic rod 27 is started to push the finished product out of the lower mold 4, and then the air pump 10 is started, and the gas will move upward through the vent hole 1203. Under the action of wind force, the air guide plate 1205 and the air guide groove 1207 make the top cover 1206 rotate to let the finished product fall off.

[0024] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this. The replacement can be a replacement of part of the structure, device, method step, or a complete technical solution. Equivalent replacement or change based on the technical solution of the utility model and its utility model concept should be included in the protection scope of the utility model.

Claims

1. A biodegradable lunch box injection mold ejector mechanism, comprising a platform plate (13), characterized in that: An air pump (10) is fixedly connected to the upper side of the platform plate (13), and four circumferentially equidistantly distributed air pipes (11) are arranged outside the air pump (10). Four circumferentially equidistantly distributed ejector modules (12) are arranged on the upper side of the platform plate (13), and the ejector modules (12) include ejector pipes (1201), each of the four ejector pipes (1201) is provided with a circular hole, and one end of the four air pipes (11) is respectively fixedly connected to the circular holes on the four ejector pipes (1201), and the other ends of the four air pipes (11) are connected to the output end of the air pump (10) via a conduit.

2. The ejector mechanism of the biodegradable lunch box injection mold according to claim 1, characterized in that: The inner walls of the four top tubes (1201) are all fixedly connected to a circular plate (1202), the circular plate (1202) is provided with a plurality of equally spaced ventilation holes (1203), the upper side of the circular plate (1202) is all fixedly connected to a spring (1204), one end of the spring (1204) away from the circular plate (1202) is all fixedly connected to a circular shaft, the upper side of the circular shaft is all movably connected to a top cover (1206), the bottom of the top cover (1206) is provided with a plurality of circumferentially equally spaced air guide grooves (1207), the bottom of the top cover (1206) is all fixedly connected to a plurality of circumferentially equally spaced air guide plates (1205), and the outside of the top cover (1206) is in contact with the upper side of the top tube (1201) on the same side.

3. A biodegradable lunch box injection mold, comprising a biodegradable lunch box injection mold ejector mechanism as claimed in any one of claims 1 to 2, characterized in that: It also includes a base (6), the upper side of which is fixedly connected to four symmetrical hydraulic rods (5), the output ends of the four hydraulic rods (5) are fixedly connected to the same lower mold (4), the upper side of the lower mold (4) is fixedly connected to two symmetrical cylinders, and an upper mold (2) is arranged above the lower mold (4), a circular groove is provided at the bottom of the upper mold (2), and the circular groove is located directly above the upper cylinder of the lower mold (4), and a circular hole is provided on the upper side of the lower mold (4), and an injection molding machine (1) is fixedly connected inside the circular hole.

4. The biodegradable lunch box injection mold according to claim 3, characterized in that: The base (6) is fixedly connected to the outside with two symmetrical guide plates (8), and opposite sides of the two guide plates (8) are fixedly connected to the outside of the upper mold (2), and two strip grooves are provided on the guide plates (8), and the outside of the lower mold (4) is fixedly connected with four symmetrical tenons, and the tenons are slidably connected to the inside of the strip grooves.

5. The biodegradable lunch box injection mold according to claim 4, characterized in that: A slide groove (9) is provided on one side of the upper mold (2), a slider is slidably connected in the slide groove (9), a moving block (17) is fixedly connected to the outside of the slider, and a bracket (3) is fixedly connected to the side of the moving block (17) away from the slide groove (9).

6. The biodegradable lunch box injection mold according to claim 5, characterized in that: A side of the bracket (3) close to the lower mold (4) is fixedly connected to a base (16), and the other side of the bracket (3) is fixedly connected to a motor (15); an output end of the motor (15) is connected to a short shaft via a coupling, and the other end of the short shaft passes through the base (16) and is fixedly connected to a fan (14), and the fan (14) is located inside the base (16).

7. The biodegradable lunch box injection mold according to claim 4, characterized in that: The upper side of the base (6) is fixedly connected to a hydraulic rod 2 (7), the output end of the hydraulic rod 2 (7) is fixedly connected to the bottom of the platform plate (13), and the lower mold (4) is provided with four holes equidistantly distributed around the circumference, and the top pipes (1201) are all slidably connected to the inside of the holes.

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