Forming extrusion head of plate for luggage production

Abstract

The utility model relates to an extrusion head, in particular to a forming extrusion head of a plate for luggage production. The extrusion molding head comprises an extrusion molding head body, a buffer cavity is formed in the extrusion molding head body, and an extrusion molding opening and a feeding opening are formed in the buffer cavity; sealing strips are mounted at the two ends of the extrusion molding opening through sliding plates; a screw rod is arranged at the outer side end of the sliding plate; and a hand wheel is arranged on the extrusion head body and is connected with the screw rod through a bevel gear. According to the extrusion molding head, the extrusion width of the extrusion molding opening can be adjusted by adjusting the relative position of the sealing strip and the extrusion molding opening, so that the width of a plate can be adjusted; due to the fact that the width of the plates is adjusted in an adjusting mode, the plates with different widths can be produced under the condition that the extrusion head is not replaced, and the extrusion head has good universality. The temperature of the melt can be adjusted, so that the viscosity and the temperature of the melt are controlled, and the melt has better flowability and can be quickly molded after being extruded; the problems that an existing plate plastic extruding machine has limitation, and the width of plates is not easy to control are solved.

Description

Technical Field

[0001] The utility model relates to an extrusion head, in particular to a forming extrusion head for a plate material used in the production of bags. Background Art

[0002] The production process of bags includes sheet forming, sheet cutting, sheet heating, box blow molding, scrap cutting, coloring, assembly (assembly of pull rods, linings, locks, handles, hinges, universal wheels and other components on the box), packaging and storage. Sheet forming needs to be carried out by an extruder, which is composed of an extrusion system, a transmission system and a heating and cooling system. The extrusion system includes a screw, a barrel, a hopper and an extrusion head. The plastic is plasticized into a uniform melt through the extrusion system, and under the pressure established in this process, it is continuously extruded to the extrusion head by the screw, and the extruded plastic is formed into a sheet through the extrusion head. The production width of the existing extruder sheet is relatively fixed, but the size of the bags varies. Different sheets are needed to produce bags of different sizes, and an extrusion head of one specification can often only produce sheets of one width. The existing extrusion head is not universal, so it is necessary to replace extrusion heads of different specifications when producing sheets of different widths. For example, the sheet extruder disclosed by announcement number CN104494086A has an extrusion port fixed on the front end of the sheet extruder body, and the formed sheet is cut into size specifications that better meet the required standards by sheet cutting. However, the cutting process can only control the length of the cutting, and the width cannot be controlled, which has certain limitations. Therefore, it is necessary to design a universal extrusion head to solve the above problems. Summary of the invention

[0003] The purpose of the utility model is to provide a forming extrusion head for plate materials used in luggage production, which has strong versatility and can control the plate width without replacement, in view of the shortcomings of the existing technology, so as to solve the problem that the existing plate extruder has limitations and is difficult to control the plate width.

[0004] The technical solution of the utility model is:

[0005] A forming extrusion head for sheet materials used in luggage production, comprising an extrusion head body, a buffer cavity provided on the extrusion head body, an extrusion port provided at the front end of the buffer cavity, and a feed port connected to the rear end of the buffer cavity; the characteristic is that: slide plates are installed at both end ends of the extrusion port, a sealing strip is provided on the extrusion port on the inner side of the slide plate; a screw is provided at the outer end of the slide plate; a hand wheel is installed on the extrusion head body on the outer side of the slide plate through a bracket, and the hand wheel is connected to the screw through a bevel gear.

[0006] The upper and lower sides of the ends of the extrusion port are respectively provided with slide grooves parallel to the extrusion port, the ends of the slide plate and the slide grooves are respectively "L" shaped, and the ends of the slide plate are slidably connected to the extrusion head body through the slide grooves.

[0007] The inner end of the slide plate is threadedly mounted with a plurality of pre-stressing bolts, and the ends of the pre-stressing bolts are plug-connected with the sealing strips.

[0008] The feed port is provided with a plurality of connection ports.

[0009] Heating tubes are arranged at intervals on the buffer cavity and the feed port, and baffles for facilitating replacement of the heating wires in the heating tubes are respectively installed on the ends of the heating tubes on the upper and lower sides of the extrusion port through fixing bolts.

[0010] The beneficial effects of the utility model are:

[0011] The forming extrusion head of the sheet material for luggage production can drive the slide plate and the sealing strip to move through the bevel gear and the screw, and the extrusion width of the extrusion port can be adjusted by adjusting the relative position of the sealing strip and the extrusion port, thereby adjusting the width of the sheet material; since the width of the sheet material is adjusted by adjustment, sheets of different widths can be produced without replacing the extrusion head, so that it has good versatility; the temperature of the melt in the buffer cavity can be adjusted by the heating tube, so as to control the viscosity and temperature of the melt, so that it has good fluidity and can be quickly formed after extrusion; the problem that the existing sheet material extruder has limitations and is difficult to control the width of the sheet material is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a main schematic diagram of the utility model;

[0013] Figure 2 It is a right side schematic diagram of the utility model;

[0014] Figure 3 yes Figure 1 Schematic diagram of the structure in the middle AA direction;

[0015] Figure 4 yes Figure 1 Schematic diagram of the structure in the middle BB direction;

[0016] Figure 5 yes Figure 4 The enlarged schematic diagram of the center C;

[0017] Figure 6 It is a connection schematic diagram of the screw rod of the utility model.

[0018] In the figure: 1. extrusion head body, 2. buffer chamber, 3. extrusion port, 4. feed port, 5. slide plate, 6. sealing strip, 7. screw, 8. bracket, 9. hand wheel, 10. slide groove, 11. pre-load bolt, 12. connection port, 13. heating tube, 14. baffle, 15. bevel gear. DETAILED DESCRIPTION

[0019] The forming extrusion head for the sheet material for the production of luggage comprises an extrusion head body 1, a buffer cavity 2 is arranged on the extrusion head body 1, and an extrusion port 3 is arranged at the front end of the buffer cavity 2, so that the melt in the buffer cavity 2 is extruded outward through the extrusion port 3, the melt extruded from the buffer cavity 2 is shaped through the extrusion port 3, and the extruded melt is formed into a sheet material through the extrusion port 3 and extruded outward. The function of the buffer cavity 2 is to cache the melt, and at the same time, the pressure at the extrusion port 3 is balanced through the buffer cavity 2, so that the melt can be uniformly extruded from the extrusion port 3, thereby ensuring the quality of the sheet material. The rear end of the buffer cavity 2 is connected with a feed port 4, so that the feed material is fed into the buffer cavity 2 through the feed port 4. The feed port 4 is provided with a plurality of connection ports 12, through which a plurality of extruders are connected respectively and individually, so that a plurality of extruders can simultaneously input melt into the feed port 4 through the connection ports 12, and a plurality of extruders can simultaneously melt the raw material particles, thereby quickly generating sufficient melt, ensuring the supply of melt to the extrusion head, ensuring that the sheet can be produced continuously, thereby ensuring that production will not be interrupted due to insufficient melt supply. Slide plates 5 are installed at the two end heads of the extrusion port 3, and a sealing strip 6 is provided on the extrusion port 3 on the inner side of the slide plate 5. The function of the sealing strip 6 is to seal the two end heads of the extrusion port 3, thereby adjusting the width of the extrusion port 3, so that the width of the sheet extruded by the extrusion port 3 meets the requirements. The function of the slide plate 5 is to limit the sealing strip 6, prevent the sealing strip 6 from shifting, ensure that the sealing strip 6 is on the extrusion port 3, and thereby ensure that the sealing strip 6 seals the extrusion port 3. The outer end of the slide plate 5 is provided with a screw rod 7; a hand wheel 9 is installed on the extrusion head body 1 outside the slide plate 5 through a bracket, a bevel gear 15 is installed on the rotating shaft of the hand wheel 9, and the bevel gear 15 is threadedly installed on the screw rod 7, and the bevel gear 15 on the screw rod 7 is meshed with the bevel gear 15 on the hand wheel 9. The function of the hand wheel 9 is to drive the bevel gear 15 to rotate, so that the bevel gear 15 can drive the screw rod 7 to move axially, so that the screw rod 7 can drag or push the slide plate 5 and the sealing strip 6 to move during the movement, thereby adjusting the relative position of the sealing strip 6 and the extrusion port 3, thereby adjusting the extrusion width of the extrusion port 3. Since the extrusion width of the extrusion port 3 can be adjusted, plates of different widths can be produced without replacing the extrusion head, so that the extrusion head 3 has universality compared to the extrusion head of the existing plate extruder. The bracket 8 is arranged at an angle to facilitate the installation of the bracket 8 and prevent the bracket 8 from interfering with the slide plate 5.

[0020] The upper and lower sides of the ends of the extrusion port 3 are respectively provided with slide grooves 10 in parallel with the extrusion port 3, and the ends of the slide plate 5 and the slide grooves 10 are respectively in an "L" shape, and the ends of the slide plate 5 are slidably connected with the extrusion head body 1 through the slide grooves 10. Since the ends of the slide plate 5 and the slide grooves 10 are respectively in an "L" shape, when the slide plate 5 slides on the extrusion head body 1 through the slide grooves 10, the extrusion head body 1 can limit the slide plate 5 through the slide grooves 10, so that the slide plate 5 can only slide along the slide grooves 10, ensuring that the slide plate 5 is not easy to deviate, and then ensuring that the sealing strip 6 is not easy to deviate during the sliding process, ensuring that the sealing strip 6 can seal the end of the extrusion port 3. The inner end of the slide plate 5 is threadedly installed with a plurality of pre-stressing bolts 11, and the ends of the pre-stressing bolts 11 are plug-connected with the sealing strip 6. The function of the pre-stressing bolts 11 is, on the one hand, to press the sealing strip 6 against the extrusion port 3 through the pre-stressing bolts 11, so that the sealing strip 6 can resist the pressure of the melt, thereby ensuring the sealing of the extrusion port 3 by the sealing strip 6, and making it difficult for the melt to leak between the sealing strip 6 and the extrusion port 3; on the other hand, when the pre-stressing bolts 11 are loosened, the pre-stressing bolts 11 no longer squeeze the sealing strip 6, thereby effectively reducing the friction between the sealing strip 6 and the end face of the extrusion port 3, making it easy to move the sealing strip 6, thereby facilitating the adjustment of the relative position of the sealing strip 6 and the extrusion port 3, and thereby facilitating the adjustment of the width of the extrusion port 3; at the same time, since the ends of the pre-stressing bolts 11 are plug-connected with the sealing strip 6, the slide plate 5 can drive the sealing strip 6 to move through the pre-stressing bolts 11 during the movement, thereby facilitating the adjustment of the position of the sealing strip 6.

[0021] When adjusting the extrusion width of the extrusion port 3, that is, adjusting the forming width of the sheet, loosen all the prestressing bolts 11 on the slides 5 at both ends of the extrusion port 3 (the prestressing bolts 11 cannot be completely loosened, and the prestressing bolts 11 are loosened at a spacing such that the slide 5 can drive the sealing strip 6 to move through the prestressing bolts 11, and there is preferably no pressure between the sealing strip 6 and the end face of the extrusion port 3). After the prestressing bolts 11 are loosened, turn the hand wheels 9 at both ends of the extrusion port 3 to drive the sealing strip 6 to move through the bevel gear 15, the screw 7, the slide 5, and the prestressing bolts 11 in sequence, adjust the relative position between the sealing strip 6 at both ends of the extrusion port 3 and the extrusion port 3, and the spacing between the sealing strips 6 at both ends of the extrusion port 3, thereby adjusting the extrusion position and extrusion width of the extrusion port 3. After the extrusion position and extrusion width of the extrusion port 3 are adjusted, all the pre-stressing bolts 11 are tightened, and the sealing strip 6 is pressed against the end face of the extrusion port 3 by the pre-stressing bolts 11. On the one hand, the pressure of the pre-stressing bolts 11 enables the sealing strip 6 to seal the end of the extrusion port 3. On the other hand, the pressure of the pre-stressing bolts 11 enables the sealing strip 6 to generate a greater friction force with the end face of the extrusion port 3, thereby fixing the position of the sealing strip 6, thereby fixing the extrusion position and extrusion width.

[0022] Heating tubes 13 are arranged at intervals on the buffer chamber 2 and the feed port 4, so as to adjust the temperature of the melt in the buffer chamber 2 through the heating tubes 13, and then adjust the viscosity of the melt, so that the melt can flow and be convenient for melt extrusion; at the same time, by adjusting the temperature of the melt, the melt can be quickly solidified and formed after extrusion. The ends of the heating tubes 13 on the upper and lower sides of the extrusion port 3 are respectively installed with baffles 14 for facilitating the replacement of the heating wire in the heating tube 13 through fixing bolts, so that the heating wire in the heating tube 13 can be easily replaced after the baffles 14 are removed.

[0023] When the forming extrusion head for producing the sheet material for luggage production produces the sheet material, the extruder sequentially squeezes the melted melt into the buffer cavity 2 in the extrusion head body 1 through the connection port 12 and the feed port 4. After the buffer cavity 2 is filled with the melt, the melt is extruded from the extrusion port 3 between the sealing strips 6 under the action of pressure, and the thickness and width of the sheet material are shaped through the extrusion port 3 and the sealing strips 6. The extruded melt is rapidly cooled and formed into a sheet material, and the sheet material is continuously produced in the process of continuous melt extrusion.

[0024] The forming extrusion head of the sheet material for luggage production can drive the slide plate 5 and the sealing strip 6 to move through the bevel gear 15 and the screw 7. The extrusion width of the extrusion port 3 can be adjusted by adjusting the relative position of the sealing strip 6 and the extrusion port 3, and then the width of the sheet material can be adjusted. Since the width of the sheet material is adjusted by adjustment, sheets of different widths can be produced without replacing the extrusion head, making it have better versatility. The temperature of the melt in the buffer cavity 2 can be adjusted by the heating tube 13, thereby controlling the viscosity and temperature of the melt, making it have better fluidity and capable of rapid molding after extrusion. This solves the problem that the existing sheet extruder has limitations and is difficult to control the width of the sheet material.

Claims

1. A molding extrusion head for sheet materials used in the production of bags, comprising an extrusion head body (1), a buffer chamber (2) being arranged on the extrusion head body (1), an extrusion port (3) being arranged at the front end of the buffer chamber (2), and a feed port (4) being connected to the rear end of the buffer chamber (2); characterized in that: Slide plates (5) are installed at both ends of the extrusion port (3), and a sealing strip (6) is provided on the extrusion port (3) inside the slide plate (5); a screw rod (7) is provided at the outer end of the slide plate (5); a hand wheel (9) is installed on the extrusion head body (1) outside the slide plate (5) through a bracket (8), a bevel gear (15) is provided on the rotating shaft of the hand wheel (9), a bevel gear (15) is threadedly installed on the screw rod (7), and the bevel gear (15) on the screw rod (7) meshes with the bevel gear (15) on the hand wheel (9).

2. The forming extrusion head for a sheet material for bag production according to claim 1, characterized in that: The upper and lower sides of the ends of the extrusion port (3) are respectively provided with slide grooves (10) parallel to the extrusion port (3); the ends of the slide plate (5) and the slide grooves (10) are respectively in an "L" shape; the ends of the slide plate (5) are slidably connected to the extrusion head body (1) via the slide grooves (10).

3. The forming extrusion head for a sheet material for bag production according to claim 1, characterized in that: The inner end of the slide plate (5) is threadedly mounted with a plurality of pre-stress bolts (11), and the ends of the pre-stress bolts (11) are plug-connected to the sealing strip (6).

4. The forming extrusion head for a sheet material for bag production according to claim 1, characterized in that: The feed port (4) is provided with a plurality of connection ports (12).

5. The forming extrusion head for a sheet material for bag production according to claim 1, characterized in that: Heating tubes (13) are arranged at intervals on the buffer chamber (2) and the feed port (4), and baffles (14) are respectively installed on the ends of the heating tubes (13) on the upper and lower sides of the extrusion port (3) through fixing bolts to facilitate the replacement of the heating wire in the heating tubes (13).

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