Plastic product production device

Abstract

The utility model discloses a plastic product production device which comprises an extrusion mechanism, a blowing mechanism, a mold closing structure, a cutting mechanism and an opening trimming mechanism, and the extrusion mechanism is provided with a plurality of extrusion openings with downward openings; the air blowing mechanism comprises a plurality of air blowing assemblies and a plurality of air blowing lifting driving units, the air blowing assemblies are provided with a plurality of air blowing openings corresponding to the extrusion openings, and the air blowing lifting driving units are used for moving the air blowing assemblies up and down; the mold closing structure comprises a plurality of mold closing assemblies and a plurality of movable driving units; the cutting mechanism comprises a cutting knife piece used for cutting the extruded materials and a cutting driving unit used for driving the cutting knife piece to move, and the cutting driving unit is used for driving the cutting knife piece to move back and forth. When one of the die assembly assemblies is subjected to blowing cooling solidification, the other die assembly assembly moves to the position below the extrusion opening to tightly bond and seal the tubular blank, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing technology, and in particular to a plastic product manufacturing apparatus. Background Technology

[0002] Blow molding is a widely used plastic processing technology, especially important in packaging, container manufacturing, and the production of certain industrial components. This technology involves heating thermoplastic material to a molten state, then blowing it into a mold under pressure. Air or other gases are used to expand the molten plastic and press it against the inner wall of the mold. After cooling, the product is formed into the desired shape. However, traditional blow molding processes do face some efficiency challenges in practical applications, mainly including the following aspects:

[0003] Mold change and cooling time: In the blow molding process, each mold needs sufficient time to cool and solidify the product after completing one molding, and mold change and preparation also take time, which directly affects the overall production efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a plastic product manufacturing apparatus to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] The technical solution adopted to solve the above-mentioned technical problems is as follows:

[0006] This utility model provides a plastic product manufacturing apparatus, including an extrusion mechanism, an air blowing mechanism, a mold clamping structure, a cutting mechanism, and a trimming mechanism. The extrusion mechanism has multiple downward-facing extrusion ports. The air blowing mechanism includes multiple air blowing components and multiple air blowing lifting drive units. The multiple air blowing components are respectively located beside the extrusion mechanism. Each air blowing component has multiple air blowing ports corresponding to the extrusion ports. The air blowing lifting drive units are used to move the air blowing components up and down. The mold clamping structure includes multiple mold clamping components and multiple moving drive units. The moving drive units are used to drive the corresponding mold clamping components to move back and forth below the extrusion ports and any one of the air blowing ports. The cutting mechanism includes a cutting blade for cutting the extruded material and a cutting drive unit for driving the cutting blade to move back and forth.

[0007] The beneficial effects of this utility model are:

[0008] During operation, the extrusion mechanism forms a tubular preform. Then, the moving drive unit moves one of the mold clamping components below the extrusion nozzle, where the tubular preform is located and its bottom is tightly sealed. Afterward, the cutting mechanism cuts the preform, and the moving drive unit moves the mold clamping components so that the preform is located below the blowing mechanism. After the blow molding is completed and a semi-finished product is formed, while one of the mold clamping components is being cooled and solidified by blowing air, the other mold clamping component moves below the extrusion nozzle to tightly seal the tubular preform, thereby improving production efficiency.

[0009] As a further improvement to the above technical solution, two of the air blowing assembly, mold closing structure, and trimming mechanism are symmetrically arranged around the cutting mechanism.

[0010] As a further improvement to the above technical solution, the cutting mechanism is located below the extrusion mechanism, and the cutting blade is elongated.

[0011] As a further improvement to the above technical solution, the mold assembly includes a first moving mold, a second moving mold, and an opening and closing drive unit. The first moving mold and the second moving mold are docked to form a cavity and a clamping cavity. The opening and closing drive unit drives the first moving mold and the second moving mold to open and close to each other.

[0012] As a further improvement to the above technical solution, the opening and closing drive unit is connected to the first moving mold and the second moving mold through a screw transmission structure.

[0013] As a further improvement to the above technical solution, the mold closing assembly further includes a fixed base, a lead screw extending in a front-to-back manner, a first nut seat fixedly disposed relative to the first moving mold, and a second nut seat fixedly disposed relative to the second moving mold. The opening and closing drive unit is mounted on the fixed base and is drivenly connected to the lead screw. The first moving mold and the second moving mold are slidably connected to the fixed base, and the lead screw is threadedly connected to the first nut seat and the second nut seat.

[0014] As a further improvement to the above technical solution, the first moving mold is detachably connected to the first nut seat, and the second moving mold is detachably connected to the second nut seat.

[0015] As a further improvement to the above technical solution, the mold closing structure also includes a mold closing base, and a plurality of the mold closing components are slidably disposed on the mold closing base.

[0016] As a further improvement to the above technical solution, the air blowing assembly also includes an air blowing pipe, with the air blowing port located at the lower end of the air blowing pipe, and the lower end of the air blowing pipe being blunt.

[0017] As a further improvement to the above technical solution, the plastic product manufacturing equipment also includes a trimming assembly, which includes a cutting blade and a trimming drive unit for driving the cutting blade to move laterally. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a schematic diagram of an embodiment of a plastic product manufacturing device provided by this utility model, wherein the six arrows represent forward, backward, left, right, upward and downward directions respectively;

[0020] Figure 2 This is a front view schematic diagram of an embodiment of a plastic product manufacturing device provided by this utility model, wherein the four arrows represent left, right, up and down respectively.

[0021] Figure label:

[0022] The extrusion mechanism 100, extrusion module 110, extrusion tube 111, up and down drive unit 120, air blowing assembly 200, air blowing lifting unit 210, air blowing pipe 220, cutting blade 300, mold closing assembly 400, moving drive unit 410, first moving mold 420, second moving mold 430, opening and closing drive unit 440, docking forming cavity 401, clamping cavity 402, fixed seat 450, lead screw 460, and first nut seat 470. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0026] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0027] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Reference Figures 1 to 2 The following is an embodiment of a plastic product manufacturing device of this utility model:

[0032] The plastic product manufacturing apparatus includes an extrusion mechanism 100, an air blowing mechanism, a mold clamping structure, a cutting mechanism, and a trimming mechanism. The extrusion mechanism 100 is located directly above the entire apparatus. The extrusion mechanism 100 includes a discharge barrel and an extrusion module 110. The extrusion module 110 includes two extrusion tubes 111, which extend vertically. The discharge barrel and the two extrusion tubes 111 are connected by a pipe. Each extrusion tube 111 has a downward-facing extrusion port. The tubular preform hangs down under gravity. With two extrusion tubes 111, two tubular preforms can be extruded simultaneously, producing two plastic bottles at the same time. To facilitate material discharge, the extrusion mechanism 100 also includes a vertical drive unit 120. After one tubular preform is extruded from the extrusion tube 111, the vertical drive unit 120 drives the extrusion module 110 to move vertically. In some other embodiments, the number of extrusion tubes 111 can be one or three.

[0033] The blowing mechanism includes two blowing components 200 and two blowing lifting units 210. The two blowing components 200 are respectively located on the side of the extrusion mechanism 100, and the two blowing lifting units 210 are also respectively located on the side of the extrusion mechanism 100. The blowing lifting unit 210 drives the corresponding blowing component 200 to move up and down. The blowing component 200 is provided with two blowing pipes 220 that extend vertically, and the lower end of the blowing pipe 220 is the blowing port.

[0034] When the mold closing assembly 400 moves below the air blowing port, the air blowing lifting unit 210 drives the corresponding air blowing assembly 200 to move downward and blow air into the tubular blank opening.

[0035] The air blowing assembly 200 also includes an air blowing pipe 220, with the air blowing port located at the lower end of the air blowing pipe 220. The lower end of the air blowing pipe 220 is blunt, and the support at the lower end of the air blowing pipe 220 gradually narrows from top to bottom, making it easy for the air blowing pipe 220 to extend into the tubular blank opening.

[0036] The cutting mechanism includes a cutting blade 300 and a cutting drive unit that drives the cutting blade 300 to move. The cutting drive unit is connected to the cutting blade 300 in a transmission manner. The cutting mechanism is located below the extrusion mechanism 100. After a tubular blank is extruded from the extrusion tube 111, the cutting drive unit drives the cutting blade 300 to move back and forth to cut the tubular blank.

[0037] The mold clamping structure consists of two mold clamping assemblies 400 and two moving drive units 410. Each of the two moving drive units 410 is responsible for driving its corresponding mold clamping assembly 400 to reciprocate in the left-right direction. The two mold clamping assemblies 400 are respectively mounted on the left and right sides of the extrusion mechanism 100.

[0038] Each mold assembly 400 further includes a first moving mold 420, a second moving mold 430, and an opening / closing drive unit 440. When the first moving mold 420 and the second moving mold 430 are mated together, they together form a mating cavity 401 and a clamping cavity 402. The opening / closing drive unit 440 is responsible for driving the first moving mold 420 and the second moving mold 430 to perform opening and closing actions, thereby realizing the clamping of the tubular preform or the release of the bottle shape.

[0039] The mold clamping structure also includes a mold clamping base, which is equipped with a slide rail. Multiple mold clamping components 400 are slidably mounted on the slide rail to improve sliding stability. The two moving drive units 410 can both be cylinders. The two cylinders are respectively located on the left and right sides of the mold clamping component 400. The cylinders drive the corresponding mold clamping component 400 to move below the extrusion port to clamp the tubular blank and to move below the blowing mechanism to blow air.

[0040] The first moving mold 420 and the second moving mold 430 are provided with a mating forming cavity 401 and a clamping cavity 402. The mating forming cavity 401 is close to the extrusion port. After the tubular preform is blown in the mating forming cavity 401, when the first moving mold 420 and the second moving mold 430 separate, the semi-finished plastic bottle will be stuck at the lower end of the blowing pipe 220. Then, the first moving mold 420 and the second moving mold 430 will move to below the extrusion port under the drive of the moving drive unit 410. The first moving mold 420 and the second moving mold 430 open and close the mating forming cavity 401 to clamp the tubular preform. At the same time as the mating forming cavity 401 clamps the tubular preform, the clamping cavity 402 will clamp the semi-finished plastic bottle and then drive the semi-finished plastic bottle to move to below the discharge port.

[0041] The opening and closing drive unit 440 is connected to the first moving mold 420 and the second moving mold 430 through the lead screw 460 transmission structure.

[0042] The mold clamping assembly 400 also includes a fixed base 450, a lead screw 460 extending front to back, a first nut seat 470 fixedly disposed relative to the first moving mold 420, and a second nut seat fixedly disposed relative to the second moving mold 430. An opening / closing drive unit 440 is mounted on the fixed base 450 and is drively connected to the lead screw 460. The first moving mold 420 and the second moving mold 430 are slidably connected to the fixed base 450. The lead screw 460 has a positive thread section and a negative thread section, which are threadedly connected to the first nut seat 470 and the second nut seat, respectively. When the opening / closing drive unit 440 drives the lead screw 460 to rotate, the first moving mold 420 and the second moving mold 430 will move closer to or further away from each other.

[0043] The first moving mold 420 is detachably connected to the first nut seat 470, and the second moving mold 430 is detachably connected to the second nut seat. The detachable connection is achieved by using multiple screws to fix the first moving mold 420 to the first nut seat 470 and the second moving mold 430 to the second nut seat. For example, the first moving mold 420 and the second moving mold 430 with different shapes of the mating cavity 401 and the clamping cavity 402 can be replaced to produce different bottle shapes.

[0044] It should be noted that all the drive units of this utility model are existing technologies, and the above-mentioned lifting and moving movements can all be driven by cylinders, electric push rods, or motor lead screws. Corresponding slide rails are also provided for linear motion to improve the accuracy of the movement.

[0045] First, the workflow begins with the left-side moving drive unit 410, which moves the left-side clamping assembly 400 directly below the extrusion port. Next, the left-side opening / closing drive unit 440 activates, driving the first moving mold 420 and the second moving mold 430 to open relative to each other, clamping the tubular blank, and then closing to secure them firmly. Simultaneously, the cutting mechanism rapidly cuts the clamped tubular blank.

[0046] After the cutting is completed, the moving drive unit 410 comes into play again, smoothly moving the mold clamping assembly 400 below the air blowing mechanism. At this time, the air blowing lifting unit 210 on the left drives the corresponding air blowing assembly 200 to move downward until it is accurately aligned with the upper end of the tubular blank and begins blowing air.

[0047] At the same time, the workflow is also proceeding simultaneously on the right: the right-side mold clamping assembly 400 moves below the extrusion port and repeatedly performs the action of clamping the tubular blank and blowing air.

[0048] After the tubular preform on the left is blown into a semi-finished plastic bottle, the opening and closing drive unit 440 on the left drives the first moving mold 420 and the second moving mold 430 to open relative to each other. At this time, the formed semi-finished plastic bottle will temporarily adhere to the lower end of the blowing pipe 220.

[0049] Next, the first moving mold 420 and the second moving mold 430, driven by the moving drive unit 410, move back below the extrusion port and open and close again to form the cavity 401 to clamp the new tubular preform. It is worth noting that while the cavity 401 clamps the tubular preform, a clamping cavity 402 tightly clamps the already formed semi-finished plastic bottle.

[0050] Subsequently, the first moving mold 420 and the second moving mold 430, still clamping the new tubular preform and the semi-finished plastic bottle, move together below the discharge port. When the first moving mold 420 and the second moving mold 430 open again, the new tubular preform in the mating cavity 401 is fixed to the lower end of the blowing pipe 220, while the semi-finished plastic bottle in the clamping cavity 402 falls naturally, thus completing the discharge process.

[0051] The operation of the right-side moving drive unit 410 and mold closing assembly 400 is similar to that of the left-side moving drive unit 410 and mold closing assembly 400.

[0052] In other embodiments, this embodiment also includes a trimming mechanism, and the plastic product manufacturing equipment further includes a trimming assembly, which includes a cutting blade and a trimming drive unit for driving the cutting blade to move laterally. After blow molding is completed and a semi-finished product is formed, the trimming moving unit drives the trimming assembly to trim the semi-finished product. While one of the mold closing components 400 is blowing air to cool and solidify, the other mold closing component 400 moves below the extrusion port to tightly bond and seal the tubular preform, thereby improving production efficiency.

[0053] In simple terms, during operation, the extrusion mechanism 100 forms a tubular blank. Then, the moving drive unit 410 moves one of the mold clamping components 400 below the extrusion port, with the tubular blank located in the mold clamping component 400 and its bottom tightly sealed. Afterward, the cutting mechanism cuts the blank, and the moving drive unit 410 moves the mold clamping component 400 so that the blank is located below the blowing mechanism. After the blow molding is completed and a semi-finished product is formed, the trimming moving unit drives the trimming component to trim the semi-finished product. While one of the mold clamping components 400 is blowing air to cool and solidify, the other mold clamping component 400 moves below the extrusion port to tightly seal the tubular blank, improving production efficiency.

[0054] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A plastic product manufacturing apparatus, characterized in that, include: The extrusion mechanism is equipped with multiple downward-facing extrusion ports; The blowing mechanism includes multiple blowing components and multiple blowing lifting drive units. The multiple blowing components are respectively disposed on the side of the extrusion mechanism. Each blowing component has multiple blowing ports corresponding to the extrusion port. The blowing lifting drive unit is used to move the blowing component up and down. The mold clamping structure includes multiple mold clamping components and multiple moving drive units, wherein the moving drive units are used to drive the corresponding mold clamping components to move back and forth below the extrusion port and any one of the air blowing ports; The cutting mechanism includes a cutting blade for cutting the extruded material and a cutting drive unit for driving the cutting blade to move back and forth.

2. The plastic product manufacturing apparatus according to claim 1, characterized in that: The air blowing assembly, mold closing structure, and trimming mechanism are all symmetrically arranged in twos with the cutting mechanism as the center.

3. The plastic product manufacturing apparatus according to claim 2, characterized in that: The cutting mechanism is located below the extrusion mechanism, and the cutting blade is elongated.

4. The plastic product manufacturing apparatus according to claim 1, characterized in that: The mold assembly includes a first moving mold, a second moving mold, and an opening and closing drive unit. The first moving mold and the second moving mold are joined together to form a cavity and a clamping cavity. The opening and closing drive unit drives the first moving mold and the second moving mold to open and close to each other.

5. A plastic product manufacturing apparatus according to claim 4, characterized in that: The opening and closing drive unit is connected to the first moving mold and the second moving mold through a lead screw transmission structure.

6. A plastic product manufacturing apparatus according to claim 5, characterized in that: The mold closing assembly further includes a fixed base, a lead screw extending forward and backward, a first nut seat fixed relative to the first moving mold, and a second nut seat fixed relative to the second moving mold. The opening and closing drive unit is mounted on the fixed base and is drivenly connected to the lead screw. The first moving mold and the second moving mold are slidably connected to the fixed base, and the lead screw is threadedly connected to the first nut seat and the second nut seat.

7. A plastic product manufacturing apparatus according to claim 6, characterized in that: The first moving mold is detachably connected to the first nut seat, and the second moving mold is detachably connected to the second nut seat.

8. A plastic product manufacturing apparatus according to claim 1, characterized in that: The mold closing structure also includes a mold closing base, and a plurality of the mold closing components are slidably disposed on the mold closing base.

9. A plastic product manufacturing apparatus according to claim 1, characterized in that: The air blowing assembly also includes an air blowing pipe, with the air blowing port located at the lower end of the air blowing pipe, and the lower end of the air blowing pipe being blunt.

10. A plastic product manufacturing apparatus according to claim 1, characterized in that: The plastic product manufacturing equipment also includes a trimming assembly, which includes a cutting blade and a trimming drive unit for driving the cutting blade to move laterally.

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