CN202097965U - A plastic molding machine - Google Patents

Abstract

The utility model relates to a plastic former specifically is to provide a plastic make-up machine. The structure of the device comprises a frame, wherein an upper pressure plate mechanism is arranged at the upper part of the frame, a lower die mechanism is arranged at the lower part of the frame, a traction mechanism is arranged between the upper pressure plate mechanism and the lower die mechanism, the upper pressure plate mechanism comprises an upper mechanism driving motor fixed on an upper mechanism motor base, the upper mechanism driving motor is connected with a lead screw through a clutch, and an upper pressure plate with an air cylinder is connected onto the lead screw in a sliding manner; the lower die mechanism comprises a lower mechanism driving motor fixed on a lower mechanism motor base, the lower mechanism driving motor is connected with a lead screw, and a lower die with an air cylinder is connected onto the lead screw in a sliding manner; and the upper mechanism driving motor and the lower mechanism driving motor are respectively connected with the numerical control system. Compared with the prior art, the plastic suction mould using the single module is combined with the extruder and the sheet mould, so that the continuous molding processing of plastic sheet extrusion and plastic suction is realized, the investment of equipment is reduced, the quality of a product is improved, the production flexibility and production efficiency are improved, and the production cost is also saved.

Description

A plastic molding machine

technical field

The utility model relates to a plastic molding device, in particular to a plastic molding machine.

Background technique

At present, the processing methods of plastic sheet blister forming on the market include: 1. Directly use plastic sheet blister forming machines; 2. Use crawler-type blister extrusion molding machines.

1. The blister forming machine that directly uses plastic sheets is the most common at present. The sheet extrusion and blister molding processes are completely separated. When using sheets for blister processing, first heat the sheets to a suitable temperature , and then put it on the blister machine for blister molding. Its biggest shortcoming is the separation of sheet extrusion and blister forming. Sheet extrusion needs to be completed through extrusion, shaping, cooling and winding, and then sheet blister needs to go through unwinding, heating, and blister forming. The processes such as cutting and cutting are completed; the sheets need repeated cooling, heating, winding and unwinding, which greatly increases the energy consumption and workload of processing. And the blister machine that uses sheet materials has an independent traction system and upper and lower mechanisms, but its traction action is intermittent, and the upper and lower mechanisms will not move in the direction of traction. Finally, the pulling action stops, and then the forming action is carried out.

2. The use of crawler-type blister extrusion molding machines is generally divided into two types: first, the lower mechanism is a crawler structure, and the movement of the upper mechanism is driven by the rotation of the eccentric wheel; through the adjustment of the transmission mechanism, the eccentric wheel rotates for one The circle is exactly one station taken by the crawler. Furthermore, the lower mechanism is a crawler structure, and the movement of the upper mechanism is reciprocating. The upper mechanism is installed on a rodless cylinder. When the mold of the crawler reaches a certain position, the clutch is closed, and the crawler drives the upper mechanism to move together. After the forming action is completed, go to another position, the clutch is separated, and the upper mechanism is reset under the action of the rodless cylinder. Although these two structures overcome the shortcomings of the plastic forming machine directly using plastic sheets, and realize continuous molding from extrusion to blister, in order to reduce production losses, the crawler must be covered with molds, so the number of molds must be More; so more molds will inevitably cause the following disadvantages: ① higher mold cost; ② long mold change time, so the production flexibility is low; ③ equipment occupies a lot of land.

Contents of the invention

The utility model aims at the above problems, and provides a plastic molding machine, which is provided with a separate traction mechanism, which cancels the traction function of the forming mold, and uses a single-module plastic mold, which is combined with an extruder and a sheet mold to realize It not only reduces the investment in equipment, improves the quality of products, improves the flexibility and production efficiency of production, but also saves production costs.

The technical scheme that the utility model solves its technical problem adopts is:

A plastic molding machine, comprising a frame, the upper part of the frame is provided with an upper platen mechanism, the lower part of the frame is provided with a lower mold mechanism, and a traction mechanism is arranged between the upper platen mechanism and the lower mold mechanism, The upper platen mechanism includes an upper mechanism drive motor fixed on the motor seat of the upper mechanism, the drive motor of the upper mechanism is connected to a screw rod through a clutch, and the upper platen with a cylinder is slidably connected to the screw rod; the lower mold The mechanism includes a lower mechanism driving motor fixed on the lower mechanism motor seat, the lower mechanism driving motor is connected with a screw rod, and the screw rod is slidably connected with a lower mold with a cylinder; the upper mechanism driving motor and the lower mechanism The drive motors are respectively connected to the numerical control system.

The traction mechanism is divided into left and right parts, which are respectively located on both sides of the upper platen mechanism and the lower mold mechanism in the mold closing direction, and are connected by a transmission shaft. The two ends of the transmission shaft are installed on the bearing seat and connected to the drive A motor, a driving wheel is arranged on both sides of the transmission shaft, and one end of the transmission part is connected through the driving wheel, and the other end of the transmission part is fixed by a driven wheel, and the driving motors are respectively connected to the numerical control system.

The traction mechanism is divided into left and right parts, which are respectively located on both sides of the upper platen mechanism and the lower mold mechanism in the mold closing direction. The traction mechanisms of the left and right parts are respectively connected with driving motors through transmission shafts. A driving wheel is arranged on both sides of the transmission shaft, and then one end of the transmission part is connected through the driving wheel, the other end of the transmission part is fixed by a driven wheel, and the driving motors are respectively connected to the numerical control system.

A tensioning wheel is arranged on the transmission part.

A tablet pressing plate is arranged on the transmission part, and one end of the tablet pressing plate is hinged on the frame through a tablet pressing wheel.

The transmission component is a sprocket component, a gear component or a track component.

A plastic molding machine of the utility model is provided with an independent traction mechanism, the clamping part of the traction mechanism is located on both sides of the sheet melt, and the traction mechanism can be a sprocket chain type traction mechanism or a crawler type. The traction mechanism can also be a pinch wheel type traction mechanism.

A plastic forming machine of the utility model is provided with an independent pressure plate mechanism and a forming mold. Under the control of the numerical control system, the pressure plate and the forming mold can advance synchronously with the traction mechanism along the screw rod, and complete the process in the process of synchronous progress. Mold closing and forming, and then parting and homing under the control of the CNC system.

A kind of plastic molding machine of the present utility model can be horizontal (the mold is set on the top or bottom of the sheet when the sheet is extruded horizontally), and it can also be vertical (the sheet is from top to bottom or from bottom to top) When extruding, the mold is set on the front (or left) and the back (or right) of the sheet];

The utility model relates to a plastic molding machine, which can be used for both suction molding and blow molding, and can also be used for a molding process in which suction molding and blow molding exist simultaneously.

To sum up, compared with the prior art, a plastic molding machine of the present invention has the following characteristics:

1. The number of molds is small, only one set, and the mold cost is low;

2. Short mold change time and high production flexibility;

3. The equipment occupies less land.

Description of drawings

Fig. 1 is the structural front view of a kind of plastic forming machine of the present utility model;

Fig. 2 is the A-A direction structural sectional view of Fig. 1;

Fig. 3 is a structural diagram of another embodiment of a transmission part of a plastic molding machine of the present invention (embodiment 2);

Fig. 4 is a structural diagram of another embodiment of a transmission part of a plastic molding machine of the present invention (embodiment 3).

Detailed ways

A plastic molding machine of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Example 1:

A plastic molding machine, comprising a frame 1, the upper part of the frame 1 is provided with an upper platen mechanism, the lower part of the frame 1 is provided with a lower mold mechanism, and a traction mechanism is arranged between the upper platen mechanism and the lower mold mechanism .

The traction mechanism of this embodiment includes a traction motor 2 arranged at one end of the middle of the frame 1 , the traction motor 2 is connected to one end of a transmission part 4 through a driving wheel 3 , and the other end of the transmission part 4 is fixed through a driven wheel 5 .

The transmission part 4 is provided with a tensioning wheel 6 .

A pressing plate 7 is also arranged on the transmission part 4 , and one end of the pressing plate 7 is hinged to the frame 1 through a pressing wheel 8 .

The upper platen mechanism includes an upper mechanism drive motor 9 fixed on the upper mechanism motor seat at the top of the frame 1 , and the upper platen 13 with the cylinder 12 is connected to the upper mechanism drive motor 9 by a clutch 10 and a screw mandrel 11 .

The lower mold mechanism includes a lower mechanism driving motor 15 fixed to the lower mechanism motor seat 14 at the bottom of the frame 1 , and the lower mechanism driving motor 15 is connected with a lower mold 18 with an air cylinder 17 through a screw mandrel 16 .

Wherein, the driving motor 9 of the upper mechanism and the driving motor 15 of the lower mechanism are respectively connected to the numerical control system.

In this embodiment, its transmission component is a sprocket.

The specific molding steps are as follows:

1. The sheet melt is extruded from the sheet die;

2. The traction motor 2 drives the main shaft to rotate, and the sprocket on the main shaft drives the ratchet chain. Under the restriction of the tablet pressing wheel 8 and the tablet pressing plate 7, the ratchet chain drives the sheet to advance at a certain speed, and the speed can be adjusted under the control of the numerical control system. tone;

3. Under the control of the numerical control system, the driving motors of the upper and lower mechanisms respectively drive the respective mold clamping mechanisms to advance synchronously through the coupling, the screw rod and the screw nut, and the speed is consistent with the travel speed of the traction sheet;

4. Under the action of the cylinder or hydraulic cylinder, the mold 18 of the lower mechanism and the pressure plate 13 of the upper mechanism produce a mold clamping action. During the mold clamping process of the sheet, the vacuum pump makes the mold 18 produce vacuum suction molding through the pipeline;

5. After the molding is completed, the mold 18 and the pressure plate 13 are also separated under the action of the cylinder or hydraulic cylinder. After separation, under the control of the numerical control system, the driving motors of the two mechanisms pass through the coupling, the screw rod, and the screw nut respectively. Drive the respective mold clamping mechanisms to quickly return to the position before mold clamping and forming, and prepare for the next cycle of molding action;

6. Repeating this cycle, the continuous forming of the sheet is realized.

Example 2:

As shown in FIG. 3 , the difference between this embodiment and Embodiment 1 is that the transmission component is a track component 19 .

Example 3:

As shown in FIG. 4 , the difference between this embodiment and Embodiment 1 is that the transmission component is a gear component 20 .

The above-mentioned embodiment is only a kind of preferred embodiment of the utility model, and the usual changes and replacements carried out by those skilled in the art within the scope of the technical solutions of the utility model should be included in the protection scope of the utility model Inside.

Claims (6)

1. A plastic forming machine, comprising a frame, the upper part of the frame is provided with an upper platen mechanism, the lower part of the frame is provided with a lower mold mechanism, and a traction mechanism is provided between the upper platen mechanism and the lower mold mechanism mechanism, characterized in that the upper platen mechanism includes an upper mechanism driving motor fixed on the upper mechanism motor seat, the upper mechanism driving motor is connected to a screw rod through a clutch, and a cylinder with a cylinder is slidably connected to the screw rod. The upper platen; the lower mold mechanism includes a lower mechanism driving motor fixed on the lower mechanism motor seat, the lower mechanism driving motor is connected with a screw mandrel, and the lower mold with a cylinder is slidably connected to the screw mandrel; The driving motor of the upper mechanism and the driving motor of the lower mechanism are respectively connected to the numerical control system. 2. A plastic molding machine according to claim 1, characterized in that the traction mechanism is divided into two parts, left and right, which are respectively located on both sides of the upper platen mechanism and the lower mold mechanism in the mold closing direction, and Connected by the transmission shaft, the two ends of the transmission shaft are installed on the bearing housing, and connected to the drive motor, a driving wheel is arranged on each side of the transmission shaft, and then one end of the transmission part is connected through the driving wheel, the transmission The other end of the component is fixed by a driven wheel, and the drive motors are respectively connected to the numerical control system. 3. A plastic molding machine according to claim 1, characterized in that the traction mechanism is divided into two parts, left and right, which are respectively located on both sides of the upper platen mechanism and the lower mold mechanism in the mold closing direction. The traction mechanisms of the left and right parts are respectively connected with driving motors through transmission shafts, and a driving wheel is arranged on both sides of the transmission shaft, and then one end of the transmission part is connected through the driving wheel, and the other end of the transmission part passes through The driven wheel is fixed, and the drive motors are respectively connected to the numerical control system. 4. A plastic molding machine according to claim 2, characterized in that a tension pulley is provided on the transmission part. 5. A plastic molding machine according to claim 2 or 3, characterized in that a pressing plate is provided on the transmission part, and one end of the pressing plate is hinged to the frame through a pressing wheel. 6. A plastic molding machine according to claim 2 or 3, characterized in that the transmission component is a sprocket component, a gear component or a track component.

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