CN102179940A - Machine and process for integrally forming plastic sheet - Google Patents

Abstract

The invention relates to a machine for integrally forming a plastic sheet. A main drawing mechanism of the machine is arranged on the side of a sheet forming mechanism; an auxiliary drawing mechanism (3) is arranged between a plastic extrusion mechanism and the sheet forming mechanism and comprises an auxiliary drawing frame (31); a fixed strip seat (32) is arranged on the auxiliary drawing frame and is provided with an auxiliary drawing cooling roller (37); the roller shaft of the auxiliary drawing cooling roller is connected with an auxiliary drawing hand wheel (35) through a lifting screw (34); the outer end of the roller shaft of the auxiliary drawing cooling roller is connected with a transmission output device through a transmission chain wheel; and the plastic extrusion mechanism, the sheet forming mechanism, the main drawing mechanism and the auxiliary drawing mechanism are uniformly regulated and controlled by a microcomputer control mechanism. In a process for integrally forming the plastic sheet, functions of plastic extrusion, main and auxiliary drawing output and sheet forming are realized by the mechanisms in turn, and a cup-shaped (bowl-shaped) finished product of the plastic sheet is produced on the same machine table at one time. By the machine and the process, secondary pollution, secondary heating and repeated winding and unwinding are avoided, energy is saved, a few production processes are performed, production cost is low, and safety and hygiene are achieved.

Description

Plastic sheet integral molding machine and its molding process

technical field

The invention relates to a plastic sheet forming machine, in particular to a forming machine which can integrate the functions of plastic extrusion, sheet forming and traction and its forming process.

Background technique

At present, the production of plastic sheet cups (bowls) needs to go through the processes of heating, extrusion, and winding of the plastic extruder to form a plastic film sheet, and then go through the processes of unwinding, heating, and forming of the thermoforming machine. And make plastic sheet material cup (bowl). During the period, the intermediate links between the above two mechanisms need to be manually operated, and there are problems such as secondary pollution, secondary heating, and repeated winding and unwinding, resulting in waste of energy, many production processes, and high production costs, which cannot satisfy high-end customers. requirements.

Contents of the invention

The purpose of the present invention is to overcome the above disadvantages, and provide a plastic sheet integrated molding machine and its molding process which can integrate the functions of plastic extrusion, sheet molding, main and auxiliary traction and output.

The purpose of the present invention is achieved through the following technical solutions: a plastic sheet integrated molding machine, including a plastic extrusion mechanism, a sheet forming mechanism, and a main traction mechanism, and the main traction mechanism is installed on the side of the forming bracket of the sheet forming mechanism , an auxiliary traction mechanism is installed between the plastic extruding mechanism and the sheet forming mechanism; Cooling roll, the roller shaft of the auxiliary pulling cooling roller is connected with the auxiliary pulling hand wheel through the lifting screw, and the outer end of the roller shaft of the auxiliary pulling cooling roller is connected with the transmission output device through the transmission sprocket; the plastic extrusion mechanism, sheet forming The mechanism, the main traction mechanism and the auxiliary traction mechanism are uniformly regulated by the microcomputer control mechanism.

The plastic sheet integrated molding process obtained by the above plastic sheet integrated molding machine is: the plastic raw material is melted and extruded through the extrusion screw of the plastic extrusion mechanism, and after the gel-like plastic is sprayed out from the extruder head, the gel-like plastic The plastic is directly sprayed onto the auxiliary traction cooling roller of the auxiliary traction mechanism, and the plastic sheet is formed after being cooled by the auxiliary traction cooling roller, and the plastic sheet is auxiliary drawn out by the rotation of the auxiliary traction cooling roller; the plastic sheet with heat is then The plastic sheet of the desired shape is produced directly through the thermoforming of the sheet forming mechanism and the blown out of the finished product; the traction and transportation of the plastic sheet is mainly completed by the traction of the main traction mechanism, the plastic extrusion mechanism, the sheet forming mechanism 1. The main traction mechanism and the auxiliary traction mechanism are uniformly regulated by the microcomputer control mechanism, so as to realize the one-time production of cup (bowl) formed products of plastic sheets on the same machine platform.

After adopting the present invention, through the plastic extruding mechanism, auxiliary traction mechanism, main traction mechanism and sheet forming mechanism, the functions of plastic extrusion, main and auxiliary traction output, and sheet forming can be realized in sequence. The plastic sheet cup (bowl) formed product avoids secondary pollution, secondary heating, repeated winding and unwinding, etc., thus saving energy, less production process, low production cost, safe and hygienic, and fully meeting the needs of high-end customers. Require.

Description of drawings

Fig. 1 is a schematic structural view of the plastic sheet integral molding machine of the present invention.

Fig. 2 is a schematic structural diagram of the auxiliary traction mechanism in Fig. 1 .

Fig. 3 is a right side view of Fig. 2 .

Fig. 4 is a left side view of Fig. 2 .

Fig. 5 is a structural schematic diagram of the main traction mechanism in Fig. 1 .

Fig. 6 is a left side view of Fig. 5 .

FIG. 7 is a top view of FIG. 6 .

Detailed ways

The present invention will be described in further detail below with reference to the drawings and embodiments.

With reference to the accompanying drawings, it can be seen that the plastic sheet integral molding machine of the present invention includes a plastic extruding mechanism 4, a sheet (thermal) forming mechanism 2, and a main traction mechanism 1, and the main traction mechanism 1 is installed in the molding of the sheet forming mechanism 2. On the side of the bracket 5, an auxiliary traction mechanism 3 is installed between the plastic extrusion mechanism 4 and the sheet forming mechanism 2; as shown in Figure 2, Figure 3, and Figure 4, the auxiliary traction mechanism 3 includes an auxiliary bracket 31, fixed bar seat 32 is housed on this auxiliary lead frame 31, and auxiliary pulling cooling roller 37 is housed on fixed bar seat 32, and the roller shaft of auxiliary pulling cooling roller 37 is connected with auxiliary pulling hand wheel 35 through lifting screw rod 34, auxiliary pulling The outer end of the roller shaft of the cooling roller 37 is connected with the transmission output device (consisting of the auxiliary traction motor 40, the motor shaft wheel 41 and the output chain 43) through the drive sprocket 38 (installed on the outer end of the roller shaft of the auxiliary traction cooling roller) ; The plastic extrusion mechanism 4, the sheet forming mechanism 2, the main traction mechanism 1 and the auxiliary traction mechanism 3 are uniformly regulated by the microcomputer control mechanism 6. The main traction mechanism 1 , the sheet forming mechanism 2 , the plastic extruding mechanism 4 and the auxiliary traction mechanism 3 are uniformly installed on the same machine platform 9 . Auxiliary pulls between the roller axle of cooling roller 37 and lifting screw rod 34 ends and screw rod fixing ring 36 is also housed, and the top of fixing bar seat 32 is equipped with fixing bar 33, and lifting screw rod is fixed.

Among them, the plastic extrusion mechanism 4, the sheet forming mechanism 2, and the main traction mechanism 1 are known technologies. The plastic extrusion mechanism 4 includes general components such as an extrusion frame, an extruder head, an extrusion screw, and a hopper, and has plastic melting Extrusion, gel-like plastic ejection function, no need to install a winding device; sheet forming mechanism 2 has the functions of thermoforming plastic sheets, blowing out finished products, etc., no need to install an unwinding device and a heating device; the main traction Mechanism 1 has the function of carrying out traction and conveyance to the plastic sheet. Originally, the chain with sharp teeth is worn on both sides of the plastic sheet to carry out traction conveyance (known technology), and there is a problem of scratching and tearing the plastic sheet. Now It can be improved to rolling traction conveying. As shown in Fig. 5, Fig. 6 and Fig. 7, the main traction mechanism 1 includes a traction frame 11 (it is installed on the side of the forming bracket 5 of the sheet forming mechanism 2), a right traction seat 12 and a left traction seat 13, Between the right traction seat 12 and the left traction seat 13, an upper traction roller 22 and a lower traction roller 23 that can form mutual extrusion are housed (the two rollers are arranged up and down, and the plastic sheet passes between the two rollers). The roller shaft of the traction roller 22 is connected with the reducer 26, and the reducer 26 is connected with the traction motor 27 through the connecting sleeve 21 (the reducer 26 and the traction motor 27 are installed on the right traction seat 12); Go up, and slide block seat 28 is housed between lower traction roller 23 and right traction seat 12, slide block seat 28 links with seat connecting shaft 19, and seat connecting shaft 19 links with lower connecting shaft 18 by spring 29, and lower The connecting shaft 18 is connected with the adjusting screw rod 15 (and the handwheel 10) through the welding cover 16 (and the retaining ring 17). Beading plate 14 is also housed on the adjusting screw rod 15, to fix adjusting screw rod; The adjustment of the height position of following traction roller 23 can be by hand wheel 10 rotation adjustment screw rods 15, and drives slide block seat 28 to fine-tune the position of following traction roller 23 by following connecting shaft 18, spring 29 and seat connecting shaft 19 successively.

In order to effectively tension the output chain of the transmission output device of the auxiliary traction mechanism, an extension spring 44 is installed on the auxiliary bracket 31. The tight sprocket 39 is connected, and the tight sprocket 39 is pressed against the output chain 43 of the transmission output device again. In order to move the position of the auxiliary traction mechanism so as to maintain an effective working distance and strengthen cooperation with the plastic extrusion mechanism, a manual transmission assembly 50 (including worm gear, worm, hand wheel), the manual transmission assembly 50 is connected with the gear 49 through the adjustment shaft 46 (through the bottom of the auxiliary bracket 31), and the gear 49 is installed on the rack 48 (the rack is installed on the plastic extrusion mechanism through the rack seat 47 On the extruding frame); Under the bottom of the auxiliary led frame 31, auxiliary pulling moving rollers 45 are housed. The adjustment shaft 46 is driven by the manual transmission assembly 50 to make the gear 49 roll on the rack to make the auxiliary traction moving roller under the auxiliary traction frame 31 roll, thereby realizing the positional movement of the auxiliary traction mechanism.

The plastic sheet integral molding process that adopts above-mentioned plastic sheet integral molding machine to obtain is: after the plastic melting extrusion of plastic raw material through the extruding screw rod of plastic extruding mechanism, after the colloidal plastic of extruder head is ejected (not Rewinding device needs to be installed for rewinding), the colloidal plastic is directly sprayed onto the auxiliary traction cooling roller of the auxiliary traction mechanism, and the plastic sheet is formed after being cooled by the auxiliary traction cooling roller, and the plastic sheet is formed by the rotation of the auxiliary traction cooling roller. The sheet is assisted by traction and export; the plastic sheet with heat is directly thermoformed by the sheet forming mechanism, and the finished product is blown out to obtain the desired shape of the plastic sheet (such as cups, bowls, etc., no need to set the sheet unwinding device and heating device); the traction and conveying of the plastic sheet is mainly completed by the rolling traction conveying that the upper traction roller (active) and the lower traction roller (passive) of the main traction mechanism squeeze each other, the plastic extrusion mechanism, The sheet forming mechanism, the main traction mechanism and the auxiliary traction mechanism are uniformly regulated by the microcomputer control mechanism, so that cup (bowl) shaped plastic sheet products can be produced at one time on the same machine.

Claims (6)

1. A plastic sheet integral molding machine, comprising a plastic extruding mechanism (4), a sheet forming mechanism (2), and a main traction mechanism (1), characterized in that: the main traction mechanism (1) is mounted on the sheet Forming support (5) side of material forming mechanism (2), auxiliary traction mechanism (3) is housed between described plastic extruding mechanism (4) and sheet forming mechanism (2); Described auxiliary traction mechanism ( 3) Including the auxiliary lead frame (31), the fixed bar seat (32) is housed on the auxiliary lead frame (31), the auxiliary lead cooling roll (37) is housed on the fixed bar seat (32), the auxiliary lead cooling roll (37 ) of the roller shaft is connected with the auxiliary handwheel (35) through the lifting screw (34), and the outer end of the roller shaft of the auxiliary cooling roller (37) is connected with the transmission output device through the transmission sprocket (38); the plastic extruder The output mechanism (4), the sheet forming mechanism (2), the main traction mechanism (1) and the auxiliary traction mechanism (3) are uniformly regulated by the microcomputer control mechanism (6). 2. The plastic sheet integrated molding machine according to claim 1, characterized in that: a tension spring (44) is installed on the auxiliary bracket (31), and the tension spring (44) is connected with the pressure by the lever (42). Tight sprocket wheel (39) is connected, and compression sprocket wheel (39) is pressed against on the output chain (43) of transmission output device again. 3. The plastic sheet integrated molding machine according to claim 1, characterized in that: a manual transmission assembly (50) is installed at the bottom of the auxiliary bracket (31) of the auxiliary traction mechanism, and the manual transmission assembly (50) passes through Adjusting shaft (46) is connected with gear (49), and gear (49) is contained on the tooth bar (48); Under the bottom of described auxiliary led frame (31), auxiliary pulling moving roller (45) is housed. 4. The plastic sheet integral molding machine according to claim 1, 2 or 3, characterized in that: the main traction mechanism (1) includes a traction frame (11), a right traction seat (12) and a left traction seat (13), between the right traction seat (12) and the left traction seat (13), the upper traction roller (22) and the lower traction roller (23) that can form mutual extrusion are housed, and the upper traction roller (22) The roller shaft is connected with the reducer (26), and the reducer (26) is connected with the traction motor (27) through the connecting sleeve (21); on the roller shaft of the lower traction roller (23), and on the lower traction roller (23) A slider seat (28) is installed between the right traction seat (12), the slider seat (28) is connected with the seat connecting shaft (19), and the seat connecting shaft (19) is connected to the lower connecting shaft through a spring (29) (18) are connected, and the lower connecting shaft (18) is connected with the adjusting screw rod (15) by the welding cover (16). 5. The plastic sheet integral molding process obtained by adopting the plastic sheet integral molding machine according to claim 1 is characterized in that: the plastic raw material is melted and extruded through the extrusion screw of the plastic extrusion mechanism, and the extruder head After the colloidal plastic is sprayed out, the colloidal plastic is directly sprayed onto the auxiliary traction cooling roller of the auxiliary traction mechanism, and the plastic sheet is formed after being cooled by the auxiliary traction cooling roller, and the plastic sheet is assisted by the rotation of the auxiliary traction cooling roller. Traction and export; the plastic sheet with heat is directly thermoformed by the sheet forming mechanism, and the finished product is blown out to obtain the desired shape of the plastic sheet; the traction and transportation of the plastic sheet is mainly completed by the traction of the main traction mechanism. The plastic extruding mechanism, the sheet forming mechanism, the main traction mechanism and the auxiliary traction mechanism are uniformly regulated by the microcomputer control mechanism, so as to realize the one-time production of cup (bowl) formed products of plastic sheets on the same machine platform. 6. The plastic sheet integral molding process as claimed in claim 5, characterized in that: the traction and conveyance of the plastic sheet is mainly completed by the rolling traction conveyance in which the upper traction roller and the lower traction roller of the main traction mechanism squeeze each other .

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