Multi-layer co-extrusion blow molding machine

Abstract

The utility model discloses a multi-layer co-extrusion blow molding machine, which relates to the technical field of blow molding machines, and comprises a rack, a plurality of extruders fixedly connected with the upper end of the rack, a plurality of extruders fixedly connected with a multi-layer co-extrusion head, two sliding chutes arranged in the rack, two sliding blocks connected in the sliding chutes in a sliding manner, and a die body fixedly connected with the upper ends of the sliding blocks, a moving mechanism used for opening and closing the die body is arranged on the rack, a clamping part is arranged at the upper end of the die body, the clamping part is fixed to the side face of the rack through a transmission component, and an air blowing module is arranged at the lower end of the die body; burrs of a product are clamped through the clamping unit, after blow molding work is completed, the moving mechanism opens the mold body, the product is demolded, the product is taken out through the transmission component to be subjected to follow-up treatment, the product cannot be touched in the operation process, and the situation that the product is damaged is avoided; and the auxiliary clamping unit is additionally arranged, so that the clamping block is fully attached to the surface of the product, the clamping force of the device is improved, and the practicability is good.

Description

Technical Field

[0001] This utility model relates to the field of blow molding machine technology, specifically a multi-layer co-extrusion blow molding machine. Background Technology

[0002] Multi-layer co-extrusion blow molding machine is a type of equipment used to manufacture multi-layer hollow containers. It uses two or more extruders to melt and plasticize the same or different types of plastics in different extruders, and then composite and extrude them in the die head to form a multi-layer concentric composite preform. By blowing air, the plastic preform is inflated and pressed tightly against the inner wall of the mold. After cooling and demolding, various hollow products are obtained.

[0003] A blow molding machine for easy demolding is described in patent publication number CN214214721U. It includes a mounting frame with a material cylinder slidably connected to the top. Second hydraulic cylinders are fixedly connected to the left and right inner walls of the mounting frame, and mold cavities are fixedly connected to the output ends of the two second hydraulic cylinders. Multiple top plate holes are evenly distributed on the inner walls of the two mold cavities. Hot fluid plastic is extruded through the material cylinder, and then the two mold cavities are closed. The hot fluid plastic is blow-molded and expanded within the cavities. After solidification, the two mold cavities are opened, and the top plate is reset by the first hydraulic cylinder, ejecting the workpiece.

[0004] However, the existing technology has the following drawbacks: since the workpiece has just finished the blow molding process, it may not be completely cooled. If the workpiece is pushed out by the first hydraulic cylinder to drive the top plate to reset at this time, it may cause deformation of the workpiece and increase the production of defective products.

[0005] Based on this, a multi-layer co-extrusion blow molding machine is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0006] The purpose of this invention is to provide a multi-layer co-extrusion blow molding machine to solve the problems in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A multi-layer co-extrusion blow molding machine includes: a frame, a plurality of extruders fixedly connected to the upper end of the frame, a multi-layer co-extrusion extrusion head fixedly connected to the plurality of extruders, two slide grooves provided in the frame, two sliders slidably connected in the slide grooves, a mold body fixedly connected to the upper end of the sliders, a moving mechanism for opening and closing the mold body provided on the frame, a clamping component provided at the upper end of the mold body, the clamping component being fixedly connected to the side of the frame via a transmission component, and an air blowing module provided at the lower end of the mold body.

[0009] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0010] In one alternative: the moving mechanism includes two bidirectional lead screws that pass through and are threadedly connected to the slider. One end of the bidirectional lead screw is rotatably connected to the frame, and the other end of the bidirectional lead screw is fixedly connected to the output end of a motor. The motor is fixedly connected to the side of the frame.

[0011] In one alternative embodiment: the transmission component includes a transmission box, which is fixedly connected to the side of the frame. A screw is rotatably connected in the middle of the transmission box. One end of the screw is rotatably connected to the transmission box, and the other end of the screw is fixedly connected to the output end of a second motor. The second motor is fixedly connected to the outer end of the transmission box. A movable block is externally threaded onto the screw, and the movable block is slidably connected to the transmission box.

[0012] In one alternative embodiment: the clamping component includes a connecting rod, one end of which is fixedly connected to the upper end of the moving block, and the other end of which is fixedly connected to a mounting frame. A telescopic rod is fixedly connected to the side of the mounting frame near the connecting rod, and a connecting plate is fixedly connected to the output end of the telescopic rod. The connecting plate is slidably connected to the inside of the mounting frame, and two fixed rods are fixedly connected to the connecting plate. One end of the fixed rod is rotatably connected to a transmission rod, and the other end of the transmission rod is rotatably connected to a transmission block. The transmission block is slidably connected to the mounting frame, and a clamping plate is fixedly connected to the transmission block. An auxiliary clamping unit is provided on the clamping plate.

[0013] In one alternative: the auxiliary clamping unit includes multiple clamping blocks, which are slidably connected to slots in a clamping plate. A spring is provided in the slot, with one end of the spring connected to a clamping block and the other end of the spring connected to the surface of the slot.

[0014] In one alternative: the air blowing module includes an air blowing base, the lower end of which is fixedly connected to a telescopic rod two, the upper end of which is provided with an air blowing pipe, and the side of which is provided with an air inlet pipe.

[0015] In one alternative: the cutting tool is fixedly connected to the clamping plate.

[0016] In one alternative: the motor is a synchronous motor.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention uses a clamping unit to hold the rough edges of the product. After the blow molding process is complete, the moving mechanism opens the mold to demold the product. The product is then removed via a transmission component and placed at the next workstation for further processing. Throughout the entire operation, the product itself is not touched, preventing damage caused by demolding before the product has fully cooled. By adding an auxiliary clamping unit, the clamping block is made to fully fit the product surface, improving the clamping force of the device and enhancing its practicality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the air blowing module of this utility model.

[0021] Figure 3 This is a schematic diagram of the transmission component of this utility model.

[0022] Figure 4 This is a schematic diagram of the auxiliary clamping unit of this utility model.

[0023] Figure reference numerals: 100, frame; 101, chute; 102, slider; 200, extruder; 201, multi-layer co-extrusion head; 300, die body; 401, bidirectional lead screw; 402, motor one; 501, transmission box; 502, screw; 503, motor two; 504, moving block; 601, connecting rod; 602, mounting frame; 603, telescopic rod one; 604, connecting plate; 605, fixing rod; 606, transmission rod; 607, transmission block; 608, clamping plate; 701, clamping block; 702, slot; 703, spring; 801, air blowing seat; 802, telescopic rod two; 803, air blowing pipe; 804, air inlet pipe; 900, cutter. Detailed Implementation

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0025] In one embodiment, Figure 1-Figure 4As shown, a multi-layer co-extrusion blow molding machine includes: a frame 100, with multiple extruders 200 fixedly connected to the upper end of the frame 100, and multiple extruders 200 fixedly connected to multi-layer co-extrusion extrusion heads 201; two grooves 101 are provided inside the frame 100, and two sliders 102 are slidably connected in the grooves 101; a mold body 300 is fixedly connected to the upper end of the sliders 102; a moving mechanism for opening and closing the mold body 300 is provided on the frame 100; and a clamping mechanism is provided at the upper end of the mold body 300. The clamping component is fixedly connected to the side of the frame 100 via a transmission component. The lower end of the mold body 300 is provided with an air blowing module. Multiple extruders 200 and multi-layer co-extrusion heads 201 work together to extrude the preform. The moving mechanism drives the mold body 300 to close. The clamping component clamps the edge material of the preform, and the air blowing module blows the preform. During the entire operation, the product body will not be touched, avoiding damage to the product caused by demolding before it has been fully cooled.

[0026] In this embodiment, as Figure 1 As shown, the moving mechanism includes two bidirectional lead screws 401. The bidirectional lead screws 401 pass through the slider 102 and are threadedly connected to the slider 102. One end of the bidirectional lead screw 401 is rotatably connected to the frame 100, and the other end of the bidirectional lead screw 401 is fixedly connected to the output end of the motor 402. The motor 402 is fixedly connected to the side of the frame 100. When the motor 402 is started, the motor 402 drives the bidirectional lead screw 401 to rotate. The bidirectional lead screw 401 drives the slider 102 to move and close relative to each other, closing the mold for the blank and performing subsequent blow molding.

[0027] In one embodiment, Figure 3 As shown, the transmission component includes a transmission box 501, which is fixedly connected to the side of the frame 100. A screw 502 is rotatably connected to the middle of the transmission box 501. One end of the screw 502 is rotatably connected to the transmission box 501, and the other end of the screw 502 is fixedly connected to the output end of a second motor 503. The second motor 503 is fixedly connected to the outer end of the transmission box 501. A moving block 504 is externally threaded onto the screw 502. The moving block 504 is slidably connected to the transmission box 501. When the second motor 503 is started, it drives the screw 502 to rotate, which in turn drives the moving block 504 to move along the screw 502, thereby moving the clamping component to clamp the edge material of the blank.

[0028] In one embodiment, Figure 4As shown, the clamping component includes a connecting rod 601. One end of the connecting rod 601 is fixedly connected to the upper end of the moving block 504, and the other end of the connecting rod 601 is fixedly connected to the mounting frame 602. A telescopic rod 603 is fixedly connected to the side of the mounting frame 602 near the connecting rod 601. A connecting plate 604 is fixedly connected to the output end of the telescopic rod 603. The connecting plate 604 is slidably connected to the inner side of the mounting frame 602. Two fixing rods 605 are fixedly connected to the connecting plate 604. The fixing rods 605 are rotatably connected to... One end of the transmission rod 606 is connected to the transmission block 607, and the other end of the transmission rod 606 is rotatably connected to the transmission block 607. The transmission block 607 is slidably connected to the mounting frame 602. The clamping plate 608 is fixedly connected to the transmission block 607. The clamping plate 608 is provided with an auxiliary clamping unit. The telescopic rod 603 extends out to output the rod and drive the connecting plate 604 to move. The connecting plate 604 drives the fixed rod 605 to move, so that the transmission rod 606 rotates, which drives the transmission block 607 to move relative to each other, and drives the two clamping plates 608 to clamp the edge material of the blank.

[0029] In one embodiment, Figure 4 As shown, the auxiliary clamping unit includes multiple clamping blocks 701, which are slidably connected to slots 702 on the clamping plate 608. A spring 703 is provided in the slot 702. One end of the spring 703 is connected to the clamping block 701, and the other end of the spring 703 is connected to the surface of the slot 702. When clamping, the clamping block 701 fits against the surface of the material edge, and the clamping block 701 retracts into the slot 702. The clamping block 701 compresses the spring 703, and the spring 703 gives the clamping block 701 a restoring force, making the clamping more stable.

[0030] In one embodiment, Figure 2 As shown, the air blowing module includes an air blowing seat 801, with a telescopic rod 802 fixedly connected to the lower end of the air blowing seat 801. An air blowing pipe 803 is provided at the upper end of the air blowing seat 801, and an air inlet pipe 804 is provided on the side of the air blowing seat 801. When blow molding is performed, the telescopic rod 802 extends out as an output rod, driving the air blowing seat 201 to move upward, driving the air blowing pipe 803 into the mold body 300, introducing gas into the air inlet pipe 804, and blowing it out from the air blowing pipe 803 to perform blow molding. When blow molding is completed, the telescopic rod 802 retracts as an output rod.

[0031] In one embodiment, Figure 4 As shown, a cutting tool 900 is fixedly connected to the clamping plate 608. When the clamping plate 608 clamps the material, the cutting tool 900 cuts the extruded material.

[0032] In one embodiment, Figure 1As shown, the motor 402 is a synchronous motor, which ensures that the two bidirectional lead screws 401 rotate and stop at the same time, thus ensuring the normal operation of this utility model.

[0033] The above embodiment discloses a multi-layer co-extrusion blow molding machine, in which multiple extruders 200 and multi-layer co-extrusion extrusion heads 201 work together to extrude a preform. Motor 402 is started, driving a bidirectional lead screw 401 to rotate. The bidirectional lead screw 401 drives a slider 102 to move and close relative to each other, closing the mold for subsequent blow molding. Motor 503 is started, driving a screw 502 to rotate, causing a moving block 504 to move along the screw 502, which in turn moves a connecting rod 601. Telescopic rod 603 extends out to output the rod, moving a connecting plate 604. The connecting plate 604 then moves a fixed rod 605, causing a transmission rod 606 to rotate, driving the transmission... The relative movement of the moving block 607 drives the two clamping plates 608 to clamp the edge material of the blank. When the clamping plates 608 are clamping, the cutter 900 cuts the extruded blank. When blow molding is performed, the telescopic rod 802 extends the output rod, drives the air blowing seat 201 to move upward, drives the air blowing pipe 803 into the mold body 300, introduces gas into the air inlet pipe 804, and blows it out from the air blowing pipe 803 for blow molding. When blow molding is completed, the telescopic rod 802 retracts the output rod, the motor 402 reverses, causing the mold body 300 to open, and the motor 503 reverses, causing the moving block 504 to move in the opposite direction, taking out the product and placing it in the next station for subsequent processing.

[0034] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A multi-layer co-extrusion blow molding machine, comprising: A frame (100) is characterized in that a plurality of extruders (200) are fixedly connected to the upper end of the frame (100), and the plurality of extruders (200) are fixedly connected to a multi-layer co-extrusion head (201). Two slide grooves (101) are provided in the frame (100), and two sliders (102) are slidably connected in the slide grooves (101). A mold body (300) is fixedly connected to the upper end of the sliders (102). A moving mechanism for opening and closing the mold body (300) is provided on the frame (100). A clamping component is provided at the upper end of the mold body (300). The clamping component is fixedly connected to the side of the frame (100) through a transmission component. An air blowing module is provided at the lower end of the mold body (300).

2. The multi-layer co-extrusion blow molding machine according to claim 1, characterized in that, The moving mechanism includes two bidirectional lead screws (401), which pass through the slider (102) and are threadedly connected to the slider (102). One end of the bidirectional lead screw (401) is rotatably connected to the frame (100), and the other end of the bidirectional lead screw (401) is fixedly connected to the output end of the motor (402). The motor (402) is fixedly connected to the side of the frame (100).

3. The multi-layer co-extrusion blow molding machine according to claim 1, characterized in that, The transmission component includes a transmission box (501), which is fixedly connected to the side of the frame (100). A screw (502) is rotatably connected in the middle of the transmission box (501). One end of the screw (502) is rotatably connected to the transmission box (501), and the other end of the screw (502) is fixedly connected to the output end of a second motor (503). The second motor (503) is fixedly connected to the outer end of the transmission box (501). A moving block (504) is externally threaded onto the screw (502), and the moving block (504) is slidably connected to the transmission box (501).

4. A multi-layer co-extrusion blow molding machine according to claim 3, characterized in that, The clamping component includes a connecting rod (601), one end of which is fixedly connected to the upper end of the moving block (504), and the other end of which is fixedly connected to the mounting frame (602). A telescopic rod (603) is fixedly connected to the side of the mounting frame (602) near the connecting rod (601). A connecting plate (604) is fixedly connected to the output end of the telescopic rod (603). The connecting plate (604) is slidably connected to the inside of the mounting frame (602). Two fixing rods (605) are fixedly connected to the connecting plate (604). One end of the fixing rod (605) is rotatably connected to the transmission rod (606). The other end of the transmission rod (606) is rotatably connected to the transmission block (607). The transmission block (607) is slidably connected to the mounting frame (602). A clamping plate (608) is fixedly connected to the transmission block (607). An auxiliary clamping unit is provided on the clamping plate (608).

5. A multi-layer co-extrusion blow molding machine according to claim 4, characterized in that, The auxiliary clamping unit includes multiple clamping blocks (701), which are slidably connected to slots (702) on the clamping plate (608). A spring (703) is provided in the slot (702), one end of which is connected to the clamping block (701) and the other end of which is connected to the surface of the slot (702).

6. A multi-layer co-extrusion blow molding machine according to claim 1, characterized in that, The air blowing module includes an air blowing seat (801), with a telescopic rod (802) fixedly connected to the lower end of the air blowing seat (801), an air blowing pipe (803) provided at the upper end of the air blowing seat (801), and an air inlet pipe (804) provided on the side of the air blowing seat (801).

7. A multi-layer co-extrusion blow molding machine according to claim 4, characterized in that, The cutting tool (900) is fixedly connected to the clamping plate (608).

8. A multi-layer co-extrusion blow molding machine according to claim 2, characterized in that, The motor (402) is a synchronous motor.

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