An automatic feeding blow molding machine

Abstract

This utility model relates to the technical field of blow molding machine devices. It provides an automatic feeding blow molding machine, including a frame, a blow molding machine body mounted at the front end of the frame, a conveyor belt embedded in the frame, several sets of mounting slots on the conveyor belt, a placement cylinder rotatably mounted inside each set of mounting slots, and a positioning slot at the top of each set of placement cylinders; and a preheating chamber fixedly mounted at the rear end of the top of the frame, with several sets of heating tubes fixedly arranged in an equidistant array on the inner wall of the rear end of the preheating chamber, and a toothed ring fixedly mounted at the top of the outer wall of each set of placement cylinders. This technical solution solves the technical problem in many existing blow molding machines where uneven heating and low efficiency during automatic feeding lead to insufficient softening in some areas due to insufficient heating, while other areas may deform due to excessive heating, ultimately affecting the quality and yield of the blown bottles.

Description

Technical Field

[0001] This utility model relates to the technical field of blow molding machine devices, specifically to an automatic feeding blow molding machine. Background Technology

[0002] Plastic bottles are mainly made of materials such as polyethylene or polypropylene with the addition of various organic solvents. Plastic bottles widely use polyester (PET), polyethylene (PE), and polypropylene (PP) as raw materials. After adding the corresponding organic solvents, they are heated at high temperatures and then formed into plastic containers through plastic molds by blow molding, extrusion blow molding, or injection molding. In the production and processing of plastic bottles, blow molding machines are often used for blow molding operations. A blow molding machine is a device that makes plastic granules into hollow containers. It is widely used in the packaging production of beverage, daily chemical, and pharmaceutical industries. Its core principle is to soften the plastic raw material (such as PET) by heating it and then using molds and high-pressure air to blow it into bottles of a specific shape.

[0003] Currently, in the process of using blow molding machines, preforms need to be heated and softened before they can be blow molded. Traditional blow molding machines usually use a method of centrally conveying the preforms to a heating chamber for heating, which has the following problems: First, the preforms are heated in a static state on the conveyor belt, resulting in uneven heating of the preform surface. Some areas may not soften sufficiently due to insufficient heating, while other areas may deform due to overheating, affecting the final blow molding quality and yield. Second, centrally placing them in the heating chamber for heating results in a long heating waiting time, which reduces processing efficiency to some extent. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides an automatic feeding blow molding machine, which solves the technical problem that many existing blow molding machines may not be able to soften sufficiently in some areas due to insufficient heating of the preform and may deform due to excessive heating during the automatic feeding process, thus affecting the quality and yield of blow molding.

[0005] According to one aspect, at least one embodiment of the present invention provides an automatic feeding blow molding machine, comprising: a frame, a blow molding machine body disposed at the front end of the frame, a conveyor belt embedded in the frame, a plurality of sets of mounting slots being provided on the conveyor belt, a placement cylinder being rotatably mounted inside each set of mounting slots, and a positioning slot being provided at the top of the interior of each set of placement cylinders.

[0006] A preheating chamber is fixedly installed at the top rear end of the frame. Several sets of electric heating tubes are fixedly installed in an array at equal intervals on the inner wall of the rear end of the preheating chamber. A toothed ring is fixedly installed at the top of the outer wall of each set of tubes. A toothed rack is fixedly installed at the edge of the top rear end of the frame inside the preheating chamber. Each set of toothed rings is engaged with the toothed rack.

[0007] For example, in a blow molding machine with automatic feeding provided in at least one embodiment of the present invention, a silicone anti-slip pad is fixedly installed on the outer wall of each group of positioning grooves.

[0008] For example, in at least one embodiment of the present invention, an automatic feeding blow molding machine is provided, which further includes: mounting plates arranged longitudinally symmetrically inside the preheating chamber; a bidirectional lead screw rotatably mounted longitudinally at the top of the preheating chamber; a motor fixedly mounted on the outer wall of the rear end of the preheating chamber; the output end of the motor fixedly connected to the bidirectional lead screw; both sets of mounting plates are threadedly connected to the bidirectional lead screw; and baffles are fixedly mounted at the bottom of both sets of mounting plates.

[0009] For example, in at least one embodiment of the present invention, an automatic feeding blow molding machine is provided, which further includes: a stabilizing rod is longitudinally fixedly installed at the top of the preheating chamber on both sides of the bidirectional lead screw, and both sets of mounting plates are slidably connected to the stabilizing rod.

[0010] For example, in at least one embodiment of the present invention, an automatic feeding blow molding machine is provided, which further includes: the motor is a self-locking motor.

[0011] For example, in at least one embodiment of the present invention, an automatic feeding blow molding machine is provided, which further includes: a cavity is provided on the outer wall of the preheating chamber, and the cavity is filled with polyurethane foam.

[0012] For example, in at least one embodiment of the present invention, an automatic feeding blow molding machine is provided, which further includes a PLC control panel fixedly installed at the right edge of the top of the frame.

[0013] For example, in at least one embodiment of the present invention, an automatic feeding blow molding machine is provided, which further includes rubber pads fixedly installed at the four corners of the bottom end of the frame.

[0014] The beneficial effects of the embodiments of this utility model are as follows:

[0015] 1. In this utility model, by setting up a conveyor belt, mounting groove, placement cylinder, preheating chamber, electric heating tube, toothed ring and toothed rack, the preform rotates when passing through the preheating chamber, and the surface of the preform can receive heat in all directions and evenly. This can effectively avoid the problem of uneven heating caused by the preform being stationary in traditional heating methods, significantly improve the heating quality of the preform, and thus improve the yield of blown bottle products.

[0016] 2: Compared with centralized heating, this invention heats the preforms directly by setting a preheating chamber on the conveyor belt, eliminating the need to preheat a large heating box and reducing the waiting time for heat. At the same time, the preforms rotate and are heated continuously during movement, which accelerates the heat transfer speed and shortens the heating time of a single preform, thereby improving the overall production efficiency of the blow molding machine.

[0017] 3. In this utility model, since it is not necessary to maintain the high temperature environment of the large heating box for a long time, it can not only reduce the ineffective loss of heat, but also reduce the energy consumption during the operation of the equipment, which is in line with the concept of green production and helps to reduce the production costs of enterprises. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an automatic feeding blow molding machine according to one embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0021] Figure 3 This is a schematic cross-sectional view of the present invention.

[0022] Figure 4 This utility model Figure 3 Schematic diagram of the structure at point A in the middle.

[0023] In the diagram: 1. Frame; 2. Conveyor belt; 3. Blow molding machine body; 4. Mounting slot; 5. Placement cylinder; 6. Positioning slot; 7. Preheating chamber; 8. Heating element; 9. Gear ring; 10. Gear rack; 11. Mounting plate; 12. Double-acting lead screw; 13. Motor; 14. Stabilizing rod; 15. Baffle; 16. PLC control panel; 17. Rubber pad. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0025] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0026] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] like Figures 1-4 As shown, it illustrates an automatic feeding blow molding machine according to an embodiment of the present invention, including: a frame 1, a blow molding machine body 3 disposed at the front end of the frame 1, a conveyor belt 2 embedded in the frame 1, a plurality of sets of mounting slots 4 opened on the conveyor belt 2, a placement cylinder 5 rotatably installed inside each set of mounting slots 4, and a positioning slot 6 opened at the top of each set of placement cylinders 5.

[0031] The preheating chamber 7 is fixedly installed at the top and rear end of the frame 1. Several sets of electric heating tubes 8 are fixedly installed at equal intervals on the inner wall of the rear end of the preheating chamber 7. A toothed ring 9 is fixedly installed at the top of the outer wall of each set of placement cylinders 5. A toothed rack 10 is fixedly installed at the edge of the top rear end of the frame 1 inside the preheating chamber 7. Each set of toothed rings 9 is engaged with the toothed rack 10. A silicone anti-slip pad is fixedly installed on the outer wall of each set of positioning grooves 6 to ensure the stability of the preforms during placement and conveying.

[0032] For example, such as Figure 1 As shown, a PLC control panel 16 is fixedly installed at the top right edge of the frame 1; rubber pads 17 are fixedly installed at the four corners of the bottom of the frame 1; the rubber pads 17 can effectively reduce the vibration and noise of the equipment during operation, improve the stability and service life of the equipment, and make the actual use of this device more effective.

[0033] In some examples, for ease of control, the conveyor belt 2, heating element 8, and motor 13 are all electrically connected to the PLC control panel 16, and all are electrically connected to an external power supply. When using this device, the operator can place the preform in the positioning groove 6 of the placement cylinder 5. The silicone anti-slip pads ensure stable placement of the preform, preventing slippage or displacement during transport. Then, the equipment is started, and the conveyor belt 2 begins to move, driving the placement cylinder 5 towards the preheating chamber 7. Once the placement cylinder 5 enters the preheating chamber 7, the gear ring 9 engages with the rack 10, causing the placement cylinder 5 to rotate while moving. The heating element 8 heats the preform. Because the preform is rotating, its surface can receive heat evenly from all directions, thus achieving uniform heating. This effectively avoids the uneven heating problem caused by the preform being stationary in traditional heating methods, significantly improving the heating quality of the preform and thus increasing the yield of blow-molded products. The heated preform then continues to move with the conveyor belt 2 to the blow molding machine body 3 for blow molding. Since the preform is transported to the blow molding machine body 3 via the conveyor belt 2, it effectively reduces the labor intensity of the operators and also reduces unnecessary damage caused by manual operation. This not only ensures the safety of the operators but also improves processing efficiency.

[0034] like Figure 3 As shown, this invention illustrates an automatic feeding blow molding machine in another embodiment of the present invention. The preheating chamber 7 has longitudinally symmetrically arranged mounting plates 11. A bidirectional lead screw 12 is longitudinally rotatably mounted at the top of the preheating chamber 7. A motor 13 is fixedly mounted on the outer wall of the rear end of the preheating chamber 7. The output end of the motor 13 is fixedly connected to the bidirectional lead screw 12. Both sets of mounting plates 11 are threadedly connected to the bidirectional lead screw 12. Baffles 15 are fixedly mounted at the bottom of both sets of mounting plates 11.

[0035] For example, such as Figure 3 As shown, the top of the preheating chamber 7 is longitudinally fixed with stabilizing rods 14 on both sides of the bidirectional lead screw 12, and the two sets of mounting plates 11 are slidably connected to the stabilizing rods 14; the motor 13 is a self-locking motor; its setting can ensure the stability of the position of the mounting plate 11 after adjustment; the outer wall of the preheating chamber 7 has a cavity, and the cavity is filled with polyurethane foam; in order to improve the heat preservation performance of the preheating chamber 7, reduce heat loss, and reduce energy consumption.

[0036] In some examples, when using this device, the motor 13 is first started via the PLC control panel 16 according to the size of the preform and the heating requirements. The motor 13 drives the bidirectional lead screw 12 to rotate, thereby adjusting the distance between the two sets of mounting plates 11. This allows the baffle 15 to appropriately limit and guide the preform, ensuring that the preform maintains a stable position and posture during conveying and heating. This prevents uneven heating or even failure to heat properly due to preform displacement or tilting, thus improving product consistency and yield to a certain extent. When the distance between the two sets of mounting plates 11 is adjusted by starting the motor 13 and using the bidirectional lead screw 12, because in this device, there are longitudinally fixed mounting brackets on both sides of the bidirectional lead screw 12 at the top of the preheating chamber 7... The stabilizing rod 14 and the sliding connection between the two sets of mounting plates 11 and the stabilizing rod 14 enhance the stability of the mounting plates 11 during movement. Furthermore, the device incorporates a cavity on the outer wall of the preheating chamber 7, filled with polyurethane foam. Polyurethane foam has a low thermal conductivity, one of the lowest among all insulation materials, resulting in excellent insulation performance. This significantly improves the insulation performance of the preheating chamber 7, reducing heat loss and energy consumption. It also lowers the outer wall temperature of the preheating chamber 7, enhancing safety during use and effectively preventing burns from accidental contact with the preheating chamber 7. These features further improve the practicality of the device.

[0037] Through the detailed description of the two embodiments above, the automatic feeding blow molding machine provided by this utility model, through the arrangement of conveyor belt 2, mounting groove 4, placement cylinder 5, preheating chamber 7, electric heating tube 8, gear ring 9, and rack 10, allows the preform to rotate as it passes through the preheating chamber 7. This ensures that the surface of the preform receives heat evenly and comprehensively, effectively avoiding the uneven heating problem caused by the preform remaining stationary in traditional heating methods. This significantly improves the heating quality of the preform, thereby increasing the yield of the finished blow-molded bottle. Furthermore, compared to centralized heating, directly heating the preform on the conveyor belt 2 reduces heat waiting time, accelerates heat transfer, and shortens the heating time for a single preform, thus improving the overall production efficiency of the blow molding machine. In addition, since it eliminates the need to maintain the high-temperature environment of a large heating chamber for extended periods, it reduces ineffective heat loss, lowers energy consumption during equipment operation, aligns with the concept of green production, and helps reduce production costs for enterprises.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An automatic feeding blow molding machine, characterized in that, include: A frame (1) is provided with a blow molding machine body (3) at the front end of the frame (1). A conveyor belt (2) is embedded in the frame (1). Several sets of mounting slots (4) are provided on the conveyor belt (2). A placement cylinder (5) is rotatably installed inside each set of mounting slots (4). A positioning slot (6) is provided at the top of each set of placement cylinders (5). The preheating chamber (7) is fixedly installed at the top rear end of the frame (1). Several sets of electric heating tubes (8) are fixedly installed at equal intervals on the inner wall of the rear end of the preheating chamber (7). A toothed ring (9) is fixedly installed at the top of the outer wall of each set of placement cylinders (5). A toothed rack (10) is fixedly installed at the edge of the top rear end of the frame (1) inside the preheating chamber (7). Each set of toothed rings (9) is meshed with the toothed rack (10).

2. The automatic feeding bottle blowing machine according to claim 1, characterized in that, Each of the positioning grooves (6) is fixedly installed with a silicone anti-slip pad on its outer wall.

3. The automatic feeding bottle blowing machine according to claim 1, characterized in that, The preheating chamber (7) is symmetrically arranged with mounting plates (11) in the longitudinal direction. A bidirectional screw (12) is rotatably installed at the top of the preheating chamber (7) in the longitudinal direction. A motor (13) is fixedly installed on the outer wall of the rear end of the preheating chamber (7). The output end of the motor (13) is fixedly connected to the bidirectional screw (12). Both sets of mounting plates (11) are threadedly connected to the bidirectional screw (12). Both sets of mounting plates (11) are fixedly installed with baffles (15) at the bottom.

4. The automatic feeding bottle blowing machine according to claim 3, characterized in that, The preheating chamber (7) has a stabilizing rod (14) fixedly installed longitudinally on both sides of the bidirectional screw (12) at the top of the interior. Both sets of mounting plates (11) are slidably connected to the stabilizing rod (14).

5. The automatic feeding bottle blowing machine according to claim 3, characterized in that, The motor (13) is a self-locking motor.

6. The automatic feeding bottle blowing machine according to claim 1, characterized in that, The preheating chamber (7) has a cavity on its outer wall, and the cavity is filled with polyurethane foam.

7. The automatic feeding bottle blowing machine according to claim 1, characterized in that, A PLC control panel (16) is fixedly installed at the top right edge of the frame (1).

8. The automatic feeding bottle blowing machine according to claim 1, characterized in that, Rubber pads (17) are fixedly installed at the four corners of the bottom of the frame (1).

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