Plastic blow molding machine with blow molding head convenient to replace

Abstract

The utility model relates to the technical field of blow molding machines, in particular to a plastic blow molding machine with a blow molding head convenient to replace, which comprises a support, a workbench, a blow molding mold and a blow molding head, the lower end of an air inlet pipe at the top of the support is communicated with a connecting seat through a corrugated pipe, an installation plate is fixedly arranged on the outer wall of the connecting seat, and an air cylinder is arranged at the top of the support. When the device is installed, the lower end of a blow molding head is inserted among the four supporting clamping plates, then an electric telescopic rod is started to complete installation, the blow molding head can be pulled out by driving a square frame to descend through the electric telescopic rod, and the blow molding head is more rapid and convenient to replace; and the connector is sealed through the chamfer with the diameter gradually reduced from bottom to top at the bottom of the sealing pipe, and sealed connection is performed through the rubber sealing ring, so that the device can adapt to connectors with different diameters on different blow molding heads, and is more flexible to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to blow molding machine technical field especially, relates to a plastic blow molding machine convenient to replace blow molding head. BACKGROUND

[0002] At present, liquid plastic is sprayed out, and the wind power of the machine is used to blow the plastic body to the mold cavity of a certain shape, thereby producing products, and this machine is called a blow molding machine. The plastic is melted and extruded quantitatively in a screw extruder, then formed through a port membrane, and then cooled by a wind ring. Then, a traction machine pulls at a certain speed, and a winding machine winds it into a roll. However, the existing blow molding machine needs to be replaced with a mold to produce different specifications of products, and the blow molding head also needs to be replaced. The existing plastic blow molding machine convenient to replace blow molding head with the application number CN201920292041.0 includes a working support, a blow molding mold is installed at the bottom of the working support, and two groups of adjusting bolts are arranged on the two sides of the blow molding mold. By rotating the two groups of adjusting bolts, the two groups of clamping plates can be moved inward to achieve the fixed clamping of the blow molding head. The clamping plates can adjust the distance to facilitate the use of blow molding heads of different sizes. The fixing method is simple and convenient, time-saving and labor-saving. However, the device needs to rotate the adjusting bolts during installation, which is not convenient. The connecting head of the blow molding head is connected with the connecting seat by screw threads, and the connecting seat cannot adapt to the connecting heads of different diameters on various blow molding heads. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at solving the problem that the existing technology needs to rotate the adjusting bolts during installation, which is not convenient, and the connecting head of the blow molding head is connected with the connecting seat by screw threads, and the connecting seat cannot adapt to the connecting heads of different diameters on various blow molding heads. A plastic blow molding machine convenient to replace blow molding head is provided.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A plastic blow molding machine convenient to replace blow molding head is designed, which includes a support, a workbench, a blow molding mold, and a blow molding head. The bottom end of the air inlet pipe at the top of the support is connected with the connecting seat through the corrugated pipe. The outer wall of the connecting seat is fixedly provided with a mounting plate. The top of the support is provided with a gas cylinder, and the lower end of the gas cylinder is fixedly connected with the mounting plate. The lower end of the connecting seat is fixedly provided with a sealing pipe. The inner end of the lower end of the sealing pipe is provided with an inner chamfer, and a rubber sealing ring is bonded on the inner chamfer. The mounting plate is provided with a square frame through the lifting driving device below. Four movable rods arranged in a circular array are slidably arranged in the square frame through the ejection device. The end of each movable rod close to each other is fixedly provided with a supporting clamping plate. The blow molding head is clamped between the four supporting clamping plates. The connecting head at the top of the blow molding head abuts against the rubber sealing ring.

[0006] Preferably, the lifting driving device comprises electric telescopic rods and guide rods, the top of the mounting plate is fixedly connected with a pair of electric telescopic rods located at opposite corners of the mounting plate, the telescopic rods of the electric telescopic rods penetrate through the mounting plate and are fixedly connected with the square frame, the top of the square frame is fixedly provided with a pair of guide rods located at the other two opposite corners, and the upper ends of the guide rods penetrate through and are slidably connected with the mounting plate.

[0007] Preferably, the front end face of the mounting plate is provided with an arc-shaped notch for placing the blow molding head.

[0008] Preferably, the ejecting device comprises sleeves and springs, the four inner walls of the square frame are fixedly provided with sleeves, the movable rods are inserted into the sleeves through the limiting devices, the outer side ends of the movable rods are fixedly connected with springs located in the sleeves, and the other ends of the springs abut against the sleeves.

[0009] Preferably, the cross sections of the four supporting clamping plates are isosceles trapezoids, and the four supporting clamping plates can be spliced into a square tube.

[0010] Preferably, the top of each of the four supporting clamping plates is provided with an arc-shaped groove, and the four arc-shaped grooves are spliced into a conical insertion groove.

[0011] Preferably, the limiting device comprises limiting blocks and limiting grooves, the outer wall of the sleeve is provided with a limiting groove, the limiting block is slidably arranged in the limiting groove, and the outer wall of the movable rod is fixedly connected with the limiting block.

[0012] The plastic blow molding machine convenient for replacing a blow molding head has the advantages that: during installation, the blow molding head is inserted between the four supporting clamping plates, and then the electric telescopic rods are started to complete the installation; the blow molding head can be pulled out by driving the square frame to descend through the electric telescopic rods, so that the replacement of the blow molding head is more convenient and faster; in addition, the connecting head is closed by the chamfer with a diameter gradually decreasing from bottom to top at the bottom of the sealing pipe, and is sealed and connected through the rubber sealing ring, so that the connecting head with different diameters on different blow molding heads can be adapted, and the use is more flexible. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The utility model provides a plastic blow molding machine convenient for replacing a blow molding head, and a structure schematic view of the plastic blow molding machine is shown in the figure.

[0014] Figure 2 The utility model provides a plastic blow molding machine convenient for replacing a blow molding head, and a partial structure schematic view of the plastic blow molding machine is shown in the figure.

[0015] Figure 3 The utility model provides a plastic blow molding machine convenient for replacing a blow molding head, and a partial sectional view of the plastic blow molding machine is shown in the figure.

[0016] Figure 4The utility model provides an A area of plastic blow molding machine convenient to replace blow molding head's enlarged view,

[0017] Figure 5 The utility model provides an A area of plastic blow molding machine convenient to replace blow molding head's pop -out structure schematic view.

[0018] In the drawing: 1, support, 2, workbench, 3, blow molding die, 4, frame, 5, guide rod, 6, electric telescopic rod, 7, air cylinder, 8, bellows, 9, air inlet pipe, 10, connecting seat, 11, mounting plate, 12, sealing tube, 13, support clamping plate, 14, blow molding head, 15, arc gap, 16, sleeve, 17, movable rod, 18, connecting head, 19, rubber sealing ring, 20, arc slot, 21, limit slot, 22, limit block, 23, spring. Specific embodiments

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0020] Reference Figures 1-5 A kind of plastic blow molding machine convenient to replace blow molding head, including support 1, workbench 2, blow molding die 3, blow molding head 14, the lower end of air inlet pipe 9 in the top of support 1 is connected with connecting seat 10 by bellows 8, connecting seat 10 is fixed with mounting plate 11 on outer wall, the top of support 1 is equipped with air cylinder 7, and the lower end of air cylinder 7 is fixedly connected with mounting plate 11, the lower end of connecting seat 10 is fixed with sealing tube 12, the inside of the lower end of sealing tube 12 is provided with inner chamfer, and rubber sealing ring 19 is bonded on inner chamfer, the lower of mounting plate 11 is provided with frame 4 by lifting drive arrangement, and four movable rods 17 that are circularly arrayed are slidably arranged in frame 4 by pop -out device, one end of movable rod 17 close to each other is fixed with support clamping plate 13, four support clamping plates 13 are clamped with blow molding head 14, the top of four support clamping plates 13 abuts with the connecting head 18 of blow molding head 14 upper end, and the top of connecting head 18 abuts with rubber sealing ring 19.

[0021] Lifting drive arrangement includes electric telescopic rod 6, guide rod 5, the top of mounting plate 11 is fixedly connected with a pair of electric telescopic rod 6 located the diagonal of mounting plate 11, and the telescopic rod of electric telescopic rod 6 penetrates mounting plate 11 and is fixedly connected with frame 4, the top of frame 4 is fixed with a pair of guide rod 5 located the other two diagonals, and the upper end of guide rod 5 penetrates and slidably connects mounting plate 11.

[0022] The front end surface of mounting plate 11 is provided with arc gap 15 for placing blow molding head 14.

[0023] The ejection device comprises the sleeve 16 and the spring 23, the sleeve 16 is fixed on the four inner walls of the square frame 4, the movable rod 17 is inserted into the sleeve 16 through the limiting device, the spring 23 is fixedly connected to the outer side of the movable rod 17 and located in the sleeve 16, and the other end of the spring 23 abuts against the sleeve 16.

[0024] The four supporting clamping plates 13 are all isosceles trapezoidal in cross section and can be spliced into a square tube.

[0025] The four supporting clamping plates 13 are all provided with the arc-shaped grooves 20 at the top, and the four arc-shaped grooves 20 are spliced into a conical insertion groove.

[0026] The limiting device comprises the limiting block 22 and the limiting groove 21, the limiting groove 21 is formed in the outer wall of the sleeve 16, the limiting block 22 is slidably arranged in the limiting groove 21, and the limiting block 22 is fixedly connected to the outer wall of the movable rod 17.

[0027] Working principle: the lower end of the blow molding head 14 is inserted between the four supporting clamping plates 13; the square frame 4 is lifted by the electric telescopic rod 6 and the supporting clamping plates 13 are driven by the movable rod 17 to lift the connecting head 18 upward and make it abut against the rubber sealing ring 19, so that the sealing connection is completed; when disassembling, the blow molding head 14 can be pulled out by lowering the square frame 4 through the electric telescopic rod 6.

[0028] The device can complete the installation by inserting the lower end of the blow molding head 14 between the four supporting clamping plates 13 and then starting the electric telescopic rod 6, and the blow molding head 14 can be pulled out by lowering the square frame 4 through the electric telescopic rod 6, so that the replacement of the blow molding head 14 is more convenient and fast, and the connecting head 18 is closed through the chamfer of the sealing tube 12 which gradually decreases from bottom to top, and is sealed and connected through the rubber sealing ring 19, so that the device can adapt to different connecting heads 18 with different diameters on different blow molding heads 14 and is more flexible to use.

[0029] The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A plastic blow molding machine facilitating replacement of a blow head, comprising a support (1), a worktable (2), a blow mold (3), a blow head (14), characterized in that, The lower end of the air inlet pipe (9) of the top of the support (1) is connected to the connecting seat (10) through the corrugated pipe (8), the outer wall of the connecting seat (10) is fixedly provided with the mounting plate (11), the top of the support (1) is provided with the air cylinder (7), and the lower end of the air cylinder (7) is fixedly connected to the mounting plate (11), the lower end of the connecting seat (10) is fixedly provided with the sealing pipe (12), the inner bottom of the lower end of the sealing pipe (12) is provided with an inner chamfer, and the inner chamfer is bonded with the rubber sealing ring (19), the lower side of the mounting plate (11) is provided with the square frame (4) through the lifting driving device, four movable rods (17) are slidably arranged in the square frame (4) through the ejection device, the end of the movable rod (17) close to each other is fixedly provided with the supporting clamping plate (13), the blow molding head (14) is clamped between the four supporting clamping plates (13), the top of the supporting clamping plate (13) abuts against the connecting head (18) at the upper end of the blow molding head (14), and the top of the connecting head (18) abuts against the rubber sealing ring (19).

2. A plastic blow molding machine with blow molding heads that are easy to replace, according to claim 1, characterized in that, The lifting driving device comprises electric telescopic rods (6) and guide rods (5), the top of the mounting plate (11) is fixedly connected to a pair of electric telescopic rods (6) located at opposite corners of the mounting plate (11), and the telescopic rod of the electric telescopic rod (6) penetrates the mounting plate (11) and is fixedly connected to the square frame (4), and the top of the square frame (4) is fixedly provided with a pair of guide rods (5) located at the other two opposite corners, and the upper end of the guide rod (5) penetrates and slidably connects the mounting plate (11).

3. A plastic blow molding machine with blow molding heads that are easily replaced, according to claim 1, characterized in that, The front end face of the mounting plate (11) is provided with an arc-shaped notch (15) for placing the blow molding head (14).

4. A plastic blow molding machine with blow molding heads that are easily replaced, according to claim 1, characterized in that, The ejection device comprises sleeves (16) and springs (23), the four inner walls of the square frame (4) are each fixedly provided with a sleeve (16), the movable rod (17) is inserted into the sleeve (16) through the limiting device, the outer side end of the movable rod (17) is fixedly connected with the spring (23) located in the sleeve (16), and the other end of the spring (23) abuts against the sleeve (16).

5. A plastic blow molding machine with blow molding heads that are easily replaced, according to claim 1, characterized in that, The cross section of the four supporting clamping plates (13) is isosceles trapezoidal, and the four supporting clamping plates (13) can be spliced into a square tube.

6. A plastic blow molding machine with blow molding heads that are easily replaced, according to claim 1, characterized in that, The top of the four supporting clamping plates (13) is provided with an arc-shaped groove (20), and the four arc-shaped grooves (20) are combined into a conical insertion groove.

7. A plastic blow molding machine with blow molding heads that are easily replaced, according to claim 4, characterized in that, The limiting device comprises limiting blocks (22) and limiting grooves (21), the outer wall of the sleeve (16) is provided with a limiting groove (21), and the limiting block (22) is slidably arranged in the limiting groove (21), and the outer wall of the movable rod (17) is fixedly connected with the limiting block (22).

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