A mold for straw production

Abstract

This utility model discloses a mold for producing straws, including a main head connector, one end of which is open, and the other end is provided with a perforated plate, a mold sleeve, and a mold core. One end of the mold core is located inside a cavity, and the other end has multiple independent mandrels and a mold outer ring inserted into it. The mold outer ring is located at the end of the mold sleeve away from the main head connector, and has multiple independent discharge ports corresponding to the mandrels. The mold outer ring is fixedly connected to the end of the mold sleeve away from the main head connector by bolts. The mold core of this utility model uses three mandrels, each mandrel having an independent air blowing hole connected to it. These mandrels are not interconnected, and each of the three mandrels has an independent discharge port. The three mandrels and three discharge holes are fitted one-to-one, and each straw hole is formed independently. Individual adjustments can be made for each straw hole, making overall adjustment simple and resulting in a beautiful finished product.

Description

Technical Field

[0001] This utility model belongs to the field of straw production technology, specifically relating to a mold for straw production. Background Technology

[0002] A straw, also known as a drinking straw, is a cylindrical, hollow plastic product mainly used for drinking beverages from a cup. In the production and manufacturing of straws, the extrusion mold is essential. Currently, existing straws are generally produced by blow molding, which involves extruding a tube blank from an extruder, holding the tube blank with a robotic arm to the blow mold, closing the upper and lower molds to hold the tube blank, and blowing air into the tube blank to make it fit tightly against the mold cavity until it cools and forms a straw.

[0003] In the existing straw production technology, due to the use of molds with upper and lower molds that close together, the mold seam marks are easily generated on the surface of the straw after it is formed, which affects the appearance of the product. This utility model provides a three-hole straw mold structure for use in beverage straw production equipment, which facilitates the adjustment of the straw hole diameter and improves the appearance of the straw during the beverage straw production process. Utility Model Content

[0004] The purpose of this invention is to provide a mold for producing straws, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mold for producing straws, comprising...

[0006] The main unit head connector has a cavity inside, one end of which is set as an opening, and the other end is provided with a perforated plate. The perforated plate is connected to the material input end, so that the material is squeezed horizontally into the cavity.

[0007] A mold sleeve is provided at the open end of the main unit head connector via a pressure plate, and the pressure plate is used to fix the mold sleeve to the main unit head connector via bolts.

[0008] The mold core has one end set inside the cavity and the other end through which multiple independent mandrels are inserted. The end of the mold core with mandrels passes through the mold sleeve and is set between the mold sleeve and the main head connecting seat. The multiple independent mandrels have one end set inside the mold core and one end exposed outside the mold core. The mold core and the main head connecting seat are reinforced by bolts.

[0009] The outer ring of the die opening is located at the end of the die sleeve away from the main head connecting seat, and has multiple independent discharge ports corresponding to the mandrel. The outer ring of the die opening is fixedly connected to the end of the die sleeve away from the main head connecting seat by bolts.

[0010] Preferably, the outer side of the main unit head connector is provided with multiple air pipe connection holes, and the air pipe connection holes penetrate through the side wall of the main unit head connector and are arranged in a circle. The air pipe connection holes are connected to external air pipes, and the airflow entering the air pipe connection holes can be adjusted.

[0011] Preferably, the mold core is provided with multiple air blowing holes corresponding to multiple air pipe connection holes on the outside of the main head connector seat, and the air blowing holes are respectively connected to multiple mandrels inside the mold core. The air pipe connection holes, air blowing holes and mandrels are respectively connected to each other, and the air output of each mandrel can be controlled individually through the air pipes connected by the air pipe connection holes.

[0012] Preferably, the mold core has a skirt along the circumference at the front of the center, the air blowing hole is located on the outside of the skirt, and the skirt has multiple flow holes, which are also arranged along the circumference near the mold core body and are arc-shaped.

[0013] Preferably, the mold core is tapered at one end inside the cavity of the main unit head connector, and the tapered end can divert the material flowing into the cavity.

[0014] Preferably, there are four flow holes.

[0015] Preferably, the main head connector, mold core, mold sleeve, mold outer ring, and perforated plate have the same axis.

[0016] Preferably, there is a gap between the multiple independent discharge ports provided on the outer ring of the die corresponding to the mandrel and the corresponding mandrel.

[0017] Preferably, the number of core rods is three, and they are hollow.

[0018] Preferably, the diameter of the air tube connection hole is larger than the diameter of the air blowing hole, and the bottom of the air blowing hole is conical, so that the gas blown into the air tube is pressurized to a certain extent by means of the diameter difference.

[0019] Preferably, one end of the mold core fits into the cavity to form a first gap, and the end of the mold core with the mandrel fits into the mold sleeve to form a second gap.

[0020] The technical effects and advantages of this utility model are as follows: The mold core of this utility model adopts three core rods, each core rod is connected to an independent air blowing hole, and they are not connected to each other. Corresponding to the three core rods, there are independent discharge ports. The three core rods are matched with the three discharge ports one by one, and each suction hole is formed independently. It is possible to adjust a certain suction hole individually. The overall adjustment is simple and the molding is beautiful. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of the overall structure of this utility model;

[0022] Figure 2 These are cross-sectional views and rear views of the mold core of this utility model from different angles;

[0023] Figure 3 These are the front view, side view, and enlarged view of the outer ring of the die opening and the discharge groove of this utility model.

[0024] In the diagram: 1. Mold core; 2. Outer ring of mold opening; 3. Mold sleeve; 4. Main unit head connector; 5. Perforated plate; 6. Pressure plate; 7. Cavity; 8. Mandrel; 9. Air pipe connection hole; 10. Air blowing hole; 11. First gap; 12. Second gap; 13. Skirt; 14. Flow hole; 15. Discharge port. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0028] This utility model provides, for example Figure 1 -3 shows a mold for producing straws, including

[0029] The main unit head connector 4 has a cavity 7 inside. One end of the cavity 7 is set as an opening, and the other end is set with a perforated plate 5. The perforated plate 5 is connected to the material input end, and the material is squeezed horizontally into the cavity 7.

[0030] The mold sleeve 3 is installed at the open end of the main unit head connecting seat 4 via the pressure plate 6. The pressure plate 6 fixes the mold sleeve 3 to the main unit head connecting seat 4 with bolts.

[0031] The mold core 1 has one end set inside the cavity 7 and the other end has three independent core rods 8 inserted through it. It is hollow. The end of the mold core 1 with core rods 8 passes through the mold sleeve 3 and is installed between the mold sleeve 3 and the main head connecting seat 4. One end of the three independent core rods 8 is set inside the mold core 1 and the other end is exposed outside the mold core 1. The mold core 1 and the main head connecting seat 4 are reinforced by bolts.

[0032] The outer ring 2 of the mold opening is located at the end of the mold sleeve 3 away from the main head connecting seat 4, and has multiple independent discharge ports 15 corresponding to the mandrel 8. The outer ring 2 of the mold opening is fixedly connected to the end of the mold sleeve 3 away from the main head connecting seat 4 by bolts.

[0033] The main unit connector 4 has three air pipe connection holes 9 on its outer side. The air pipe connection holes 9 penetrate the side wall of the main unit connector 4 and are arranged in a circle. The air pipe connection holes 9 are connected to external air pipes, and the airflow entering the air pipe connection holes 9 can be adjusted.

[0034] The mold core 1 is provided with three air blowing holes 10 corresponding to the three air pipe connection holes 9 on the outside of the main head connector 4. The air blowing holes 10 are respectively connected to the three core rods 8 inside the mold core 1. The air pipe connection holes 9, air blowing holes 10 and core rods 8 are respectively connected. The air output of each core rod 8 can be controlled individually through the air pipes connected to the air pipe connection holes 9.

[0035] A skirt 13 is provided along the circumference at the front of the middle part of the mold core 1. An air blowing hole 10 is provided on the outside of the skirt 13, and multiple flow holes 14 are provided on the skirt 13. The flow holes 14 are also arranged along the circumference near the body of the mold core 1 and are arc-shaped.

[0036] The mold core 1 is set in the cavity 7 inside the main unit head connector 4. One end of the mold core 1 is tapered, and the tapered end can divert the material flowing into the cavity 7.

[0037] There are four flow holes 14.

[0038] The main unit head connector 4, mold core 1, mold sleeve 3, mold outer ring 2, and perforated plate 5 have the same axis.

[0039] There is a certain gap between the multiple independent discharge ports 15 set on the outer ring 2 of the die and the corresponding mandrel 8.

[0040] The diameter of the air tube connection hole 9 is larger than the diameter of the air blowing hole 10, and the bottom of the air blowing hole 10 is conical. The gas blown into the air tube is pressurized to a certain extent by the diameter difference.

[0041] One end of the mold core 1 is fitted with the cavity 7 to form a first gap 11, and the end of the mold core 1 with the core rod 8 is fitted with the mold sleeve 3 to form a second gap 12.

[0042] This utility model connects the perforated plate 5 to the material input end via the main unit head connector 4. The perforated plate 5 is used to horizontally squeeze the rotating material into the first gap 11 formed by the mold core 1 and the cavity 7. The material is then diverted through the conical end of the mold core 1 and flows into the second gap 12 formed by the mold core 1 and the mold sleeve 3 through the flow hole 14 on the skirt 13. During this process, the air pipe connection hole 9 is connected to an external air pipe, and air is blown into each core rod 8 through the air blowing hole 10. The material is then extruded into a tube along the gap between the mold core 1 and the outer ring 2 of the mold opening.

[0043] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A mold for producing straws, characterized in that: include The main unit head connector (4) has an opening at one end and a perforated plate (5) at the other end, and has a cavity (7) inside. The mold sleeve (3) is installed at the open end of the main unit head connector (4) by means of the pressure plate (6); The mold core (1) has one end set in the cavity (7) and the other end is inserted with multiple independent mandrels (8). The mold core (1) is located at one end of the mandrels (8) that passes through the mold sleeve (3) and is located between the mold sleeve (3) and the main head connector (4). The outer ring (2) of the mold opening is installed at one end of the mold sleeve (3) away from the main head connector (4), and has multiple independent discharge ports (15) corresponding to the mandrel (8).

2. The mold for producing straws according to claim 1, characterized in that: The main unit head connector (4) is provided with a plurality of air pipe connection holes (9) on the outside, and the air pipe connection holes (9) penetrate through the side wall of the main unit head connector (4) and are arranged in a circle.

3. The mold for producing straws according to claim 2, characterized in that: The mold core (1) is provided with multiple air holes (10) corresponding to multiple air pipe connection holes (9) on the outside of the main head connector (4), and the air holes (10) are respectively connected to multiple core rods (8) inside the mold core (1).

4. The mold for producing straws according to claim 3, characterized in that: The mold core (1) has a skirt (13) at the front of the center along the circumference. The air blowing hole (10) is located on the outside of the skirt (13), and the skirt (13) has multiple flow holes (14).

5. A mold for producing straws according to claim 1, characterized in that: There is a gap between the discharge port (15) and the corresponding mandrel (8).

6. The mold for producing straws according to claim 1, characterized in that: One end of the mold core (1) is fitted with the cavity (7) to form a first gap (11), and the end of the mold core (1) with the core rod (8) is fitted with the mold sleeve (3) to form a second gap (12).

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