CN212124140U - Efficient automatic vacuum blow molding machine - Google Patents

Abstract

The utility model discloses a high-efficiency automatic vacuum blow molding machine. A base, an air blowing structure and a vacuum pump are installed at the bottom of the body, a rotary motor is installed at the bottom of the body, and an output end of the rotary motor is connected with a rotating shaft. The other end of the rotating shaft is connected to the bottom center of the rotating disk, and the rotating disk is provided with a three-combination mold structure. The utility model adopts multi-station operation, the extrusion device continuously discharges the material, when one mold clamping structure completes the mold clamping, the next one continues to work, which can improve the production efficiency; the air entering the air compressor is heated by the heating rod, Then, the blow molding machine can keep the parison in a high temperature state when blowing the parison, which is convenient for the parison to deform; the vacuum pump can extract the air in the cavity synthesized by the movable mold, the static mold and the sealing plate, so as to increase the interior of the parison. and the external pressure difference, so that the parison can completely adhere to the inner wall of the movable mold and the static mold, thereby reducing the appearance of defective products.

Description

A high-efficiency automatic vacuum blow molding machine

technical field

The utility model relates to a high-efficiency automatic vacuum blow molding machine, which belongs to the technical field of blow molding machines.

Background technique

Blow molding, also known as hollow blow molding, is a rapidly developing plastic processing method. The tubular plastic parison obtained by extrusion or injection molding of thermoplastic resin is placed in a split mold while it is hot (or heated to a softened state), and compressed air is introduced into the parison immediately after closing the mold to blow the plastic parison. It expands and sticks closely to the inner wall of the mold, and after cooling and demoulding, various hollow products are obtained. There are injection blow molding and extrusion blow molding. The former first uses an extruder or an injection machine to shape the raw material to obtain a molten parison, then place it in the mold, and inflate it with compressed air to make the billet close to the mold wall. After cooling and demoulding, a hollow product is obtained, such as Plastic bottles, barrels, balls, etc. The latter is attached to the front end of the extruder with a blowing die, and the extruded molten tube blank is blown into a die tube with compressed air, which is then folded and rolled into a double-layer flat film after cooling, such as making plastic bags or films.

However, the existing blow molding device still has the following defects in use:

1. Most of the commonly used blow molding machines have a single-station structure, that is, a die head corresponds to a clamping structure and a set of blowing structures. In the actual use process, the extrusion device needs to wait for the clamping structure and the blowing structure. The next extrusion procedure can only be continued after completion, so that the extrusion device cannot work continuously and the utilization rate of the extrusion device is reduced.

2. When the existing blow molding device is in use, the air blown by the air compressor is normal temperature air, and its temperature is much lower than the surface temperature of the parison, which will cause rapid damage to the parison when the parison is blown. Cooling down, so that the parison cools and solidifies when it does not reach the proper shape, thereby increasing the error of the produced product, and the existing blow molding device only relies on high-pressure air to deform the parison, thereby prolonging the deformation time of the parison At the same time, some air will remain in the mold, which will increase the product error.

In view of this drawback, a high-efficiency automatic vacuum blow molding machine is proposed to solve the above-mentioned problems.

Utility model content

In order to solve the problems mentioned in the above background technology, the utility model now designs a high-efficiency automatic vacuum blow molding machine, which adopts multi-station operation, and the extrusion device continuously discharges materials. Working one by one can improve the production efficiency and the utilization rate of the extrusion device; the air entering the air compressor is heated by the heating rod, so that the blow molding machine can keep the parison in a high temperature state when blowing the parison, It is convenient for the parison to deform; the vacuum pump can draw out the air in the cavity formed by the movable mold, the static mold and the sealing plate, which increases the pressure difference between the inside and outside of the parison, so that the parison can completely adhere to the moving mold and the static mold. The inner wall can reduce the appearance of defective products and improve the accuracy of processing; the setting of the rotating tube can also deal with the overflow of the injection port.

The purpose of the present utility model can be achieved by adopting the following technical solutions:

A high-efficiency automatic vacuum blow molding machine includes a body, a support seat is installed above the body, an electric lifting rod is installed at the four corners of the bottom of the support seat, the electric lifting rod is fixedly connected with the top of the body, and the support An extruder is installed above the seat, an upper hopper is installed on the extruder, one end of the extruder is connected with a tube blank forming die, a base, an air blowing structure and a vacuum pump are installed at the bottom of the body, and the bottom of the body is A rotating motor is installed, the output end of the rotating motor is connected with a rotating shaft, the other end of the rotating shaft is connected with the bottom center position of the rotating disk, and a three-combination mold structure is installed on the rotating disk. The die structure is located just below the outlet of the tube blank forming die.

Preferably, the mold clamping structure includes a movable mold and a static mold, a movable plate is fixedly connected to one side of the movable mold, and a hydraulic telescopic rod is installed at the center of one side of the movable plate. The other end is fixedly connected with a first fixing plate, the other side of the static mold is fixedly connected with a second fixing plate, and four supporting columns are installed along the horizontal direction at the four corner positions of the other side of the first fixing plate. The movable plate slides on the four support columns through the sleeve, the bottoms of the first fixed plate and the second fixed plate are movably connected with the rotating disk, and the four corners of the movable mold are opened at the four corners. There is a positioning groove, and a positioning column matched with the positioning groove is installed on the side of the movable mold opposite to the movable mold.

Preferably, the air blowing structure includes an air compressor, a heating box and a sealing plate, an air intake pipe is connected to the output end of the air compressor, an air outlet pipe is connected to the output end of the vacuum pump, and the air intake pipe and the The other ends of the air outlet pipes respectively penetrate through the sealing plate and extend below the sealing plate, and two handles are installed at the opposite corners of the top of the sealing plate.

Preferably, a heating rod is installed on the inner wall of one side of the heating box, an air outlet is formed above one side wall of the heating box, an air inlet is formed below the other side wall of the heating box, and the air compressor It is connected with the air outlet of the heating box through a connecting pipe.

Preferably, a rotating pipe is installed on the outer circumference of the air inlet pipe and the air outlet pipe, the inner wall of the rotating pipe and the outer wall of the air intake pipe are sealed and connected, and the rotating pipe can be opposite to the air intake pipe. During rotation, a sealing strip is provided at the joint between the rotating pipe and the sealing plate, and a parison is connected to the other end of the air inlet pipe, and the parison is located in the cavity formed by the movable mold and the static mold.

Preferably, the length of the air outlet pipe extending below the sealing plate is smaller than the length of the air inlet pipe extending below the sealing plate.

Beneficial technical effects of the utility model: The utility model adopts multi-station operation, and the extrusion device continuously discharges materials. When a mold clamping structure completes the mold clamping, the next one continues to work, which can improve the production efficiency and the utilization rate of the extrusion device. ; The air entering the air compressor is heated by the heating rod, so that the blow molding machine can keep the parison in a high temperature state when blowing the parison, which is convenient for the parison to deform; the vacuum pump can make the moving mold, static mold and The air in the cavity synthesized by the sealing plate is extracted to increase the pressure difference between the inside and the outside of the parison, so that the parison can completely adhere to the inner wall of the movable die and the static die, thereby reducing the appearance of defective products and improving the accuracy of processing ;The setting of the rotating tube can also deal with the overflow of the injection port.

Description of drawings

Fig. 1 is the structural representation of the present utility model;

Fig. 2 is the sectional view of the present utility model;

Fig. 3 is the structural schematic diagram of the sealing plate of the present invention;

Fig. 4 is the sectional view of the utility model rotary pipe;

5 is a cross-sectional view of the mold clamping structure of the present invention.

In the picture: 1-body, 2-support base, 3-electric lift rod, 4-extruder, 5-upper hopper, 6-tube blank forming die, 7-base, 8-rotating disc, 9-clamping structure , 10-rotating shaft, 11-rotating motor, 12-air compressor, 13-heating box, 14-vacuum pump, 15-air outlet pipe, 16-inlet pipe, 17-air outlet, 18-air inlet, 19-heating Rod, 20-sealing plate, 21-handle, 22-rotating tube, 23-sealing strip, 24-first fixing plate, 25-second fixing plate, 26-support column, 27-parison, 28-hydraulic telescopic rod , 29-movable die, 30-static die, 31-positioning column, 32-positioning slot, 33-movable plate, 34-air blowing structure.

Detailed ways

In order to make the technical solutions of the present invention more clear and clear to those skilled in the art, the present invention will be described in further detail below with reference to the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

As shown in FIGS. 1-5 , a high-efficiency automatic vacuum blow molding machine provided by this embodiment includes a body 1, a support base 2 is installed above the body 1, and electric lifting rods 3 are installed at the four corners of the bottom of the support base 2. The lifting rod 3 is fixedly connected with the top of the body 1, an extruder 4 is installed above the support base 2, an upper hopper 5 is installed on the extruder 4, and one end of the extruder 4 is connected with a tube blank forming die 6, and the inner bottom of the body 1 is installed There is a base 76, an air blowing structure 34 and a vacuum pump 14, a rotary motor 11 is installed at the bottom of the body 1, the output end of the rotary motor 11 is connected with a rotary shaft 10, and the other end of the rotary shaft 10 is connected with the bottom center position of the rotary disk 8, There are three combined mold structures 9 installed on the rotary disk 8. The mold clamping structure 9 is located directly below the outlet of the tube blank forming mold 6. The driving device of the extruder 4 is started, and the plastic material is poured into the upper hopper 54, and the material passes through the extruder 4. After heating and melting, it is extruded into the tube blank forming die 6, and the parison 27 is formed after extruding from the tube blank forming die 6, and the parison 27 is put into the clamping structure 9 for mold clamping, and the rotating motor 11 and the rotating shaft 10 are started. Drive the rotating disc 8 to rotate, the new clamping structure 9 performs the clamping procedure, and the clamping structure 9 that has completed the clamping procedure performs the blowing procedure. After the blowing is completed, the rotating disc 8 rotates, and the new clamping structure 9. Carry out the air blowing procedure, and the mold clamping structure that has completed the air blowing procedure 9 carries out the cooling and demoulding procedure, and this cycle greatly improves the production efficiency and the utilization rate of the extrusion device.

In this embodiment, the mold clamping structure 9 includes a movable mold 29 and a static mold 30. A movable plate 33 is fixedly connected to one side of the movable mold 29, and a hydraulic telescopic rod 28 is installed at the center of one side of the movable plate 33. The other end of the rod 28 is fixedly connected with the first fixing plate 24, the other side of the static mold 30 is fixedly connected with the second fixing plate 25, and four supporting columns are installed along the horizontal direction at the four corners of the other side of the first fixing plate 24. 26. The movable plate 33 slides on the four support columns 26 through the sleeves, the bottoms of the first fixed plate 24 and the second fixed plate 25 are movably connected with the rotary disk 8, and the four corners of the movable mold 29 are provided with positioning Slot 32, the opposite side of the movable die 29 and the movable die 29 is installed with a positioning column 31 that matches the positioning groove 32, the hydraulic telescopic rod 28 is activated, and the movable die 29 fixed on the movable plate 33 is under the action of the sliding sleeve. The support column 26 is moved horizontally, and the parison 27 is placed in the cavity formed by the movable die 29 and the movable die 29. The positioning column 31 on the movable die 29 and the positioning groove 32 on the static die 30 are inserted together, effectively To ensure the accuracy of mold clamping.

In this embodiment, the air blowing structure 34 includes the air compressor 12, the heating box 13 and the sealing plate 20. The output end of the air compressor 12 is connected with the air intake pipe 16, the output end of the vacuum pump 14 is connected with the air outlet pipe 15, and the air intake pipe 16 and the other ends of the air outlet pipe 15 respectively penetrate the sealing plate 20 and extend to the bottom of the sealing plate 20. Two handles 21 are installed at the diagonal corners of the top of the sealing plate 20. The air inlet pipe 16 and the air outlet pipe 15 penetrate the sealing plate 20 to ensure the air The airtightness of the cavity and the installation of the handle 21 on the sealing plate 20 are convenient for removing the sealing plate 20 after the blowing procedure, and then performing the blowing procedure on the next clamping structure 9 that has completed the clamping.

In this embodiment, a heating rod 19 is installed on the inner wall of one side of the heating box 13 , an air outlet 17 is opened above one side wall of the heating box 13 , and an air inlet 18 is opened below the other side wall of the heating box 13 . The machine 12 is connected to the air outlet 17 of the heating box 13 through a connecting pipe.

In this embodiment, a rotating pipe 22 is installed on the outer circumference of the air inlet pipe 16 and the air outlet pipe 15. The inner wall of the rotating pipe 22 and the outer wall of the air inlet pipe 16 are sealedly connected, and the rotating pipe 22 can be opposite to the air inlet pipe 16 and the outlet pipe. The air pipe 15 rotates, a sealing strip 23 is provided at the joint between the rotating pipe 22 and the sealing plate 20, the other end of the air inlet pipe 16 is connected with a parison 27, and the parison 27 is located in the cavity formed by the movable mold 29 and the static mold 30. The setting of 22 can prevent overflow on the injection molded parts.

In this embodiment, the length of the air outlet pipe 15 extending below the sealing plate 20 is smaller than the length of the air inlet pipe 16 extending below the sealing plate 20 .

The working principle of the utility model is as follows: start the driving device of the extruder 4, pour the plastic material into the upper hopper 54, the material is heated and melted by the extruder 4 and extruded into the tube blank forming die 6, and the plastic material is extruded into the tube blank forming die 6 from the tube blank forming die. 6 After extrusion, the parison 27 is formed, and the parison 27 is installed at one end of the air inlet 18, the hydraulic telescopic rod 28 is activated, and the movable die 29 fixed on the movable plate 33 moves horizontally on the support column 26 under the action of the sliding sleeve , place the parison 27 in the cavity formed by the movable mold 29 and the movable mold 29. The positioning column 31 on the movable mold 29 is inserted into the positioning groove 32 on the static mold 30. When the mold clamping procedure is completed, the The sealing plate 20 and the mold clamping structure 9 are fitted together for sealing, so that the mold cavity forms a closed space, the rotating motor 11 is started, and the rotating shaft 10 drives the rotating disk 8 to rotate. The mold clamping structure 9 of the mold process performs the blowing process, and the air in the heating box 13 is heated by the heating rod 19. In the mold-closed parison 27 , the other end of the air outlet pipe 15 penetrates and also penetrates the sealing plate 20 and extends into the cavity below the sealing plate 20 . The air in the formed cavity is extracted, which increases the pressure difference between the inside and outside of the parison 27, and at the same time prevents the air remaining in the cavity from hindering the deformation of the parison 27, thereby reducing the deformation error of the parison 27. The temperature of the air entering the parison 27 is relatively high, which slows down the cooling time of the parison 27, thereby allowing sufficient time for the parison 27 to deform. In the air blowing procedure, the mold clamping structure 9 that has completed the air blowing procedure undergoes a cooling and demoulding procedure, and this cycle greatly improves the production efficiency and the utilization rate of the extrusion device.

The above are only further embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. The equivalent replacement or modification of the concept thereof shall belong to the protection scope of the present invention.

Claims (6)

1. The utility model provides a high-efficient automatic vacuum blowing machine, includes organism (1), supporting seat (2) are installed to organism (1) top, electric lift pole (3) are installed to supporting seat (2) bottom four corners department, electric lift pole (3) with organism (1) top fixed connection, extruder (4) are installed to supporting seat (2) top, install feeding funnel (5) on extruder (4), extruder (4) one end is connected with pipe forming die (6), its characterized in that: base (7), blowing structure (34) and vacuum pump (14) are installed to the bottom in organism (1), rotating electrical machines (11) are installed to organism (1) bottom, the output of rotating electrical machines (11) is connected with rotation axis (10), the other end of rotation axis (10) is connected with rotary disk (8), just the bottom central point of rotary disk (8) put with the one end of rotation axis (10) links to each other, install three compound die structures (9) of group on rotary disk (8), compound die structure (9) are located under the export of pipe forming die (6).

2. A high efficiency automatic vacuum blow molding machine as claimed in claim 1 wherein: the die assembly structure (9) comprises a movable die (29) and a static die (30), a movable plate (33) is fixedly connected to one side of the movable die (29), a hydraulic telescopic rod (28) is installed at the center position of one side of the movable plate (33), a first fixing plate (24) is fixedly connected to the other end of the hydraulic telescopic rod (28), a second fixing plate (25) is fixedly connected to the other side of the static die (30), four supporting columns (26) are installed at the position of four corners of the other side of the first fixing plate (24) in the horizontal direction, the movable plate (33) slides on the four supporting columns (26) through a sleeve, the bottoms of the first fixing plate (24) and the second fixing plate (25) are both movably connected with the rotating disk (8), positioning grooves (32) are formed at the positions of four corners of one side of the movable die (29), and the fixed die (29) are installed at one side of the movable die (29) opposite to be matched with A bit column (31).

3. A high efficiency automatic vacuum blow molding machine as claimed in claim 2 wherein: the blowing structure (34) comprises an air compressor (12), a heating box (13) and a sealing plate (20), an air inlet pipe (16) is connected to the output end of the air compressor (12), an air outlet pipe (15) is connected to the output end of the vacuum pump (14), the air inlet pipe (16) and the other end of the air outlet pipe (15) penetrate through the sealing plate (20) and extend to the lower portion of the sealing plate (20), and two handles (21) are installed at the opposite corners of the top of the sealing plate (20).

4. A high efficiency automatic vacuum blow molding machine as claimed in claim 3 wherein: install heating rod (19) on heating cabinet (13) one side inner wall, gas outlet (17) have been seted up to heating cabinet (13) one side wall top, air inlet (18) have been seted up to the below of another lateral wall of heating cabinet (13), air compressor (12) through the connecting pipe with gas outlet (17) of heating cabinet (13) link to each other.

5. A high efficiency automatic vacuum blow molding machine as claimed in claim 3 wherein: the air inlet pipe (16) and all install on the outer circumference of outlet duct (15) rotatory pipe (22), the inner wall of rotatory pipe (22) with sealing connection between the outer wall of inlet duct (16), rotatory pipe (22) can be relative inlet duct (16) is rotatory, rotatory pipe (22) with closing plate (20) linking department is equipped with sealing strip (23), the other end of inlet duct (16) is connected with parison (27), parison (27) are located movable mould (29) with the synthetic die cavity of static mould (30).

6. A high efficiency automatic vacuum blow molding machine as claimed in claim 4 wherein: the length of the air outlet pipe (15) extending to the lower part of the sealing plate (20) is less than the length of the air inlet pipe (16) extending to the lower part of the sealing plate (20).

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