Bottle blow molding machine

Abstract

The present invention relates to the technical field of blow molding machines, specifically a bottle blow molding machine, including a fixed frame, the inner surface of the fixed frame is rotatably connected with a rotating mechanism on both sides, the rotating mechanism includes a rear mold, a cylinder, a movable plate, a front mold, a mold cavity, a blowing port, a circular groove, a connecting ring, a blowing pipe, a gear ring, a movable block, a gear, a connecting rod and a motor, and the rear mold is composed of a plurality of movable blocks spliced ​​together, and the rear end outer surfaces of the plurality of movable blocks are fixedly connected with a cylinder. The present invention provides a rotating mechanism so that the blow-molded product has enough time to cool, and the device can continue to operate during the cooling process, thereby improving the production efficiency of the blow molding machine, and by providing a second through groove on the front end outer surface of the rear mold, the molded product in the mold cavity will automatically fall from the second through groove due to gravity, without the need for manual material removal operations, thereby reducing the labor of the staff and improving the convenience of the device during operation.

Description

Technical Field

[0001] The invention relates to the technical field of blow molding machines, in particular to a bottle blow molding machine. Background Art

[0002] Common methods for preparing plastic bottles include extrusion blow molding, injection blow molding and stretch blow molding. Extrusion blow molding is a process in which an extruder extrude molten material, and then the extruded preform is placed in a blow molding mold for inflation. After cooling and shaping, the product is demolded and taken out. Extrusion blow molding is the largest and earliest blow molding method. The extrusion blow molding process firstly extrude the tubular preform from the die head after the material is melted and plasticized in the extruder. When the preform reaches the predetermined length, a section of the preform is cut off and placed in the blow molding mold while it is hot. After closing and clamping the mold, the compressed air blown into the preform through the blowing nozzle blows it into the precise shape of the molding cavity, and then the mold is opened to take out the product.

[0003] Most traditional blow molding machines have one blow molding head corresponding to a group of blow molding molds. After the blow molding head extrude the molten plastic and close the mold to form a product, it is necessary to wait for the product to cool and form before opening the mold to remove the material, which reduces the production efficiency of the blow molding machine.

[0004] The existing patent (application number: CN202020854747.4) is a blow molding machine with rapid cooling and discharging, comprising a box body, an electromagnetic heating cylinder is fixedly installed on the top of the box body, an injection motor is fixedly installed on the left side of the electromagnetic heating cylinder, a cooling cover is fixedly installed on the right side of the electromagnetic heating cylinder, a mold box is fixedly installed in the inner cavity of the cooling cover, a water tank is fixedly installed on the top of the cooling cover, a water pump is fixedly installed on the left side of the water tank, and a water supply pump is fixedly installed on the right side of the water tank.

[0005] The above patent can transport the water in the water tank to the inner cavity of the cooling cover through the water delivery pump, and the water pump can pump the water in the cooling cover into the return water tank to form a water cooling cycle, so as to achieve the purpose of quickly cooling the molding model, and the wind can be transported through the ventilation duct by the blower, and the air supply port can send the wind to perform secondary cooling on the molding model. Although the purpose of cooling can be achieved by setting a series of components such as a water pump and a blower, the manufacturing cost of the blow molding machine is also increased. Moreover, due to the large number of assembled components, the device is prone to failure during operation, which increases the maintenance cost of the blow molding machine. In addition, the comparative patent requires manual material extraction operations for the molded product, which increases the labor of the staff and brings inconvenience to the staff's operation.

[0006] Therefore, a bottle blow molding machine is proposed. Summary of the invention

[0007] The object of the present invention is to provide a bottle blow molding machine to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: a bottle blow molding machine, comprising a fixed frame, the inner surface of which is rotatably connected to a rotating mechanism at both the front and rear sides;

[0009] The rotating mechanism includes a rear mold, a cylinder, a movable plate, a front mold, a mold cavity, an air blowing port, a circular groove, a connecting ring, an air blowing pipe, a gear ring, a movable block, a gear, a connecting rod and a motor. The rear mold is composed of a number of movable blocks spliced ​​together, and the rear end outer surfaces of the several movable blocks are fixedly connected to the cylinder, and the rear end of the cylinder is fixedly connected to the movable plate, and the rear end of the movable plate is rotatably connected to the fixed frame through a bearing, and the front end outer surface of the rear mold is fitted and connected to the front mold, and the front end outer surface of the front mold is rotatably connected to the fixed frame through a bearing, and the outer surface of one end of the rear mold adjacent to the front mold is provided with a number of mold cavities, and the several movable blocks are one-to-one with the mold cavities. A blowing port is provided at the inner center position of the front mold, a circular groove is provided at the center position of the front end outer surface of the front mold, the annular inner surface of the circular groove is rotatably connected with a connecting ring through a bearing, the annular inner surface of the connecting ring is fixedly connected with a blowing pipe, the annular outer surfaces of the front mold and the movable plate are fixedly connected with gear rings, one side of the outer surfaces of the two groups of gear rings are meshed with gears, the two gears are connected by a connecting rod, the rear end of the connecting rod is fixedly connected with a motor, the rear end of the motor is fixedly connected to a fixed frame, the front end outer surface of the connecting rod is rotatably connected with the fixed frame through a bearing, and a blow molding head is arranged directly above the rear mold and the front mold.

[0010] Although the purpose of cooling can be achieved by setting a series of components such as a water pump and a blower, the manufacturing cost of the blow molding machine is also increased. In addition, due to the large number of assembled components, the device is prone to malfunction during operation, which increases the maintenance cost of the blow molding machine. The present invention sets a rotating mechanism. When working, it first controls the cylinder at the upper end to contract, driving the movable block at the upper end to move backward to separate from the front mold. The blow molding head extrude the molten plastic between the movable block and the front mold, and then controls the cylinder to move forward and drive the movable block to close the mold with the front mold, so that the molten plastic is located in the mold cavity, and then injects gas into the mold cavity through the blowing pipe and the blowing port, so that the molten plastic expands and fits with the inner surface of the mold cavity to form a shape, and then starts the motor, the motor rotation drives the gear to rotate, the gear drives the gear ring to rotate, thereby driving the movable plate and the front mold to rotate, and the rear mold is synchronous with the movable plate Rotate, and when the next movable block rotates to the upper end, the motor stops running, and the cylinder located at the rear end of the movable block moves backward, driving the movable block to move backward to separate it from the front mold, and completing product molding as above, continue to start the motor, and drive the movable blocks to rotate in turn. When the movable block originally located at the upper end rotates to the lower end, the product molded inside it has enough time to cool, and the cylinder located at the rear end of the movable block is controlled to move backward again, driving the movable block to move backward and separate from the front mold, and the cooled and molded product can be taken out. The present invention sets a rotating mechanism, uses a motor to drive several movable blocks to rotate intermittently, and cooperates with the cylinder to move back and forth, so that the blow-molded product has enough time to cool. Since the device adopts a structural method in which a group of blow molding heads corresponds to multiple groups of mold cavities, the device can continue to perform blow molding operations during the cooling process, thereby improving the production efficiency of the blow molding machine.

[0011] Preferably, an air-blocking mechanism is fixedly connected to the outer surface of the rear end of the air blowing pipe;

[0012] The air-closing mechanism includes an air-closing ring and a first through groove. The air-closing ring is fixedly connected to the rear end outer surface of the air blowing pipe. The annular outer surface of the air-closing ring fits with the inner side wall of the air blowing port. The upper end of the annular outer surface of the air-closing ring is provided with a first through groove.

[0013] During operation, since the blowing port is interconnected with several mold cavities when the mold is closed, the gas blown out by the blowing pipe will enter other mold cavities, thereby increasing the operating power of the blowing equipment. The present invention sets an air-closing mechanism, uses an air-closing ring to block the openings of other mold cavities, and opens a first through groove at the upper end of the annular outer surface of the air-closing ring, so that the gas blown out of the blowing pipe can only enter the mold cavity at the upper end through the first through groove, thereby reducing the operating power of the blowing equipment. Since the air-closing ring is rotatably connected to the front mold and the rear mold through the blowing pipe, when the front mold and the rear mold rotate, the air-closing ring will not rotate accordingly, and the first through groove is always located at the upper end of the air-closing ring. When the next movable block rotates to the upper end, the first through groove is interconnected with the mold cavity formed by the movable block and the front mold.

[0014] Preferably, a groove is provided on the front end of the inner surface of the fixed frame near the blowing pipe, the blowing pipe is located inside the groove, a first sealing groove is provided on the edge of the front end outer surface of the connecting ring, a second sealing groove is provided on the front end outer surface of the front mold near the outside of the connecting ring, a sealing cover is provided on the annular outer surface of the blowing pipe, a first sealing ring is fixedly connected to the rear end outer surface of the sealing cover near the first sealing groove, a second sealing ring is fixedly connected to the rear end outer surface of the sealing cover near the second sealing groove, the first sealing ring and the first sealing groove are fitted together, and the second sealing ring and the second sealing groove are fitted together.

[0015] During operation, since the connecting ring is rotatably connected to the circular groove through the bearing, and the blowing pipe is movably connected to the blowing port, a gap will exist at the connection between the blowing pipe and the blowing port. The blown gas can easily escape from the gap to the circular groove, and then escape from the circular groove to the outside of the device, thereby affecting the normal operation of the blow molding machine. The present invention strengthens the sealing between the connecting ring and the circular groove by arranging a first sealing ring that fits with the first sealing groove, and a second sealing ring that fits with the second sealing groove, thereby preventing the gas from escaping from the circular groove to the outside of the device, and ensuring the normal operation of the blow molding machine.

[0016] Preferably, the annular inner surface of the sealing cover is slidably connected to the blowing pipe, and a plurality of electric telescopic rods are fixedly connected to the front end outer surface of the sealing cover near the outside of the blowing pipe, and the front end outer surfaces of the plurality of electric telescopic rods are fixedly connected to the groove.

[0017] During operation, in order to ensure the sealing between the connecting ring and the circular groove, the second sealing ring and the second sealing groove should fit tightly. Therefore, when the second sealing groove rotates with the front mold, a large friction force will be generated between the second sealing ring and the second sealing groove, which may easily cause the second sealing ring to be damaged by the friction force, thereby affecting the sealing effect. The present invention arranges an electric telescopic rod. Before the second sealing groove rotates with the front mold, the electric telescopic rod is controlled to drive the sealing cover to move forward, so that the first sealing ring and the first sealing groove are separated from each other, and the second sealing ring and the second sealing groove are separated from each other, thereby avoiding the second sealing ring and the second sealing groove from being damaged by friction when they move relative to each other, thereby ensuring the sealing effect when the second sealing ring and the second sealing groove fit together.

[0018] Preferably, a second through groove is provided on the front end outer surface of the rear mold near the outside of the mold cavity, and a protrusion is fixedly connected to the rear end outer surface of the front mold near the second through groove, and the protrusion fits with the second through groove.

[0019] During operation, since the molded product needs to be picked up manually, the labor of the staff is increased and the operation is inconvenient for the staff. The present invention opens a second through groove on the front end outer surface of the rear mold near the outside of the mold cavity. When the mold cavity containing the molded product runs to the lower end, the cylinder located at the rear end of the movable block is controlled to move backward, driving the movable block to move backward and separate from the front mold. The molded product in the mold cavity will automatically fall out of the second through groove due to gravity. There is no need for manual material picking operation, which reduces the labor of the staff and improves the convenience of the device during operation.

[0020] Preferably, a plurality of limiting rods are fixedly connected to the edge of the rear end outer surface of the front mold, the rear ends of the limiting rods pass through the rear mold and are fixedly connected to the movable plate, and the annular outer surfaces of the limiting rods are slidably connected to the rear mold.

[0021] During operation, due to the lack of a limiting mechanism to limit the movable block, when the movable block moves forward with the cylinder and closes with the front mold, the movable block is easily affected by gravity, causing its horizontal position to change. When the mold is closed, the two mold cavities are staggered, affecting the production quality of the product. The present invention sets a limiting rod and uses the limiting rod to limit the movable block, thereby preventing the movable block from being easily affected by gravity when the movable block moves forward with the cylinder and closes with the front mold, causing its horizontal position to change. When the mold is closed, the two mold cavities are staggered, thereby ensuring the production quality of the product.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention sets a rotating mechanism, uses a motor to drive several movable blocks to rotate intermittently, and cooperates with the cylinder to move back and forth, so that the blow-molded products have enough time to cool. Since the device adopts a structural mode in which a group of blow molding heads corresponds to multiple groups of mold cavities, the device can continue to perform blow molding operations during the cooling process, thereby improving the production efficiency of the blow molding machine. By opening a second through groove at a position close to the outside of the mold cavity on the front end outer surface of the rear mold, the molded product in the mold cavity will automatically fall from the second through groove due to gravity, and there is no need for manual material removal operations, which reduces the labor of the staff and improves the convenience of the device during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the combination of the cylinder and the rear mold of the present invention;

[0026] Figure 3 It is a schematic diagram of the combination of the movable block and the mold cavity;

[0027] Figure 4 It is a schematic diagram of the combination of the front mold and the rear mold of the present invention;

[0028] Figure 5 It is a schematic diagram of the combination of the sealing cover and the circular groove of the present invention;

[0029] Figure 6 It is a schematic diagram of the combination of the front mold, the rear mold and the limiting rod.

[0030] In the figure: 1. fixed frame; 11. blow molding head; 12. groove; 2. rotating mechanism; 21. rear mold; 22. cylinder; 23. movable plate; 24. front mold; 25. mold cavity; 26. blowing port; 27. circular groove; 28. connecting ring; 29. ​​blowing pipe; 20. gear ring; 211. movable block; 212. gear; 213. connecting rod; 214. motor; 215. second through groove; 216. protrusion; 217. limit rod; 3. air-closing mechanism; 31. air-closing ring; 32. first through groove; 33. first sealing groove; 34. second sealing groove; 331. first sealing ring; 341. second sealing ring; 35. electric telescopic rod; 36. sealing cover. DETAILED DESCRIPTION

[0031] The following is a partial embodiment of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] See also Figures 1 to 6 , the present invention provides a technical solution for a bottle blow molding machine:

[0035] A bottle blow molding machine, such as Figures 1 to 5 As shown, it comprises a fixed frame 1, and the inner surface of the fixed frame 1 is rotatably connected to a rotating mechanism 2 at both the front and rear sides;

[0036] The rotating mechanism 2 includes a rear mold 21, a cylinder 22, a movable plate 23, a front mold 24, a mold cavity 25, an air blowing port 26, a circular groove 27, a connecting ring 28, an air blowing pipe 29, a gear ring 20, a movable block 211, a gear 212, a connecting rod 213 and a motor 214. The rear mold 21 is composed of a plurality of movable blocks 211 spliced ​​together, and the rear end outer surfaces of the plurality of movable blocks 211 are fixedly connected to the cylinder 22, and the rear end of the cylinder 22 is fixedly connected to the movable plate 23, and the rear end of the movable plate 23 is rotatably connected to the fixed frame 1 through a bearing, and the front end outer surface of the rear mold 21 is fitted and connected to the front mold 24, and the front end outer surface of the front mold 24 is rotatably connected to the fixed frame 1 through a bearing, and the outer surface of one end of the rear mold 21 adjacent to the front mold 24 is provided with a plurality of mold cavities 25, and the plurality of movable blocks 211 are fixedly connected to the front mold 24, and the movable plate 23 is fixedly connected to the fixed frame 1 through a bearing ... Corresponding one to one with the mold cavity 25, a blowing port 26 is provided at the inner center position of the front mold 24, a circular groove 27 is provided at the center position of the front end outer surface of the front mold 24, the annular inner surface of the circular groove 27 is rotatably connected to a connecting ring 28 through a bearing, and the annular inner surface of the connecting ring 28 is fixedly connected to a blowing pipe 29, the annular outer surfaces of the front mold 24 and the movable plate 23 are fixedly connected to a gear ring 20, one side of the outer surfaces of the two groups of gear rings 20 are meshed and connected to gears 212, and the two gears 212 are connected by a connecting rod 213, the rear end of the connecting rod 213 is fixedly connected to a motor 214, the rear end of the motor 214 is fixedly connected to the fixed frame 1, the front end outer surface of the connecting rod 213 is rotatably connected to the fixed frame 1 through a bearing, and a blow molding head 11 is arranged directly above the rear mold 21 and the front mold 24.

[0037] Although the purpose of cooling can be achieved by setting a series of components such as a water pump and a blower, the manufacturing cost of the blow molding machine is also increased. Due to the large number of assembled components, the device is prone to failure during operation, which increases the maintenance cost of the blow molding machine. The present invention sets a rotating mechanism 2. When working, the cylinder 22 at the upper end is first controlled to contract, driving the movable block 211 at the upper end to move backward so as to separate from the front mold 24. The blow molding head 11 extrude the molten plastic between the movable block 211 and the front mold 24, and then the cylinder 22 is controlled to move forward and drive the movable block 211 to close the mold with the front mold 24, so that the molten plastic is located in the mold cavity 25, and then gas is injected into the mold cavity 25 through the blowing pipe 29 and the blowing port 26, so that the molten plastic expands and fits with the inner surface of the mold cavity 25 to form a mold, and then the motor 214 is started, the motor 214 rotates to drive the gear 212 to rotate, the gear 212 drives the gear ring 20 to rotate, thereby driving the movable plate 23 and the front mold 24 to rotate, and at the same time the rear mold 21 moves with the movable plate 2 3 synchronously rotates, when the next movable block 211 rotates to the upper end, the motor 214 stops running, and the cylinder 22 located at the rear end of the movable block 211 moves backward, driving the movable block 211 to move backward to separate it from the front mold 24, and the product molding is completed as above, and the motor 214 is started again to drive the movable blocks 211 to rotate in sequence. When the movable block 211 initially located at the upper end rotates to the lower end, the product molded therein has enough time to cool, and the cylinder 22 located at the rear end of the movable block 211 is controlled to move backward again, driving the movable block 211 to move backward and separate it from the front mold 24, and the cooled and molded product can be taken out. The present invention sets a rotating mechanism 2, uses the motor 214 to drive several movable blocks 211 to rotate intermittently, and cooperates with the cylinder 22 to move back and forth, so that the blow-molded product has enough time to cool. Since the device adopts a structural mode in which a group of blow molding heads 11 corresponds to multiple groups of mold cavities 25, the device can still continue to perform blow molding operations during the cooling process, thereby improving the production efficiency of the blow molding machine.

[0038] As an embodiment of the present invention, Figure 5 As shown, the rear end outer surface of the air blowing pipe 29 is fixedly connected with an air-closing mechanism 3;

[0039] The air-closing mechanism 3 includes an air-closing ring 31 and a first through groove 32. The air-closing ring 31 is fixedly connected to the rear end outer surface of the air blowing pipe 29. The annular outer surface of the air-closing ring 31 fits with the inner side wall of the air blowing port 26. The upper end of the annular outer surface of the air-closing ring 31 is provided with a first through groove 32.

[0040] During operation, since the blowing port 26 is interconnected with several mold cavities 25 when the mold is closed, the gas blown out by the blowing pipe 29 will enter other mold cavities 25, thereby increasing the operating power of the blowing equipment. The present invention sets an air-closing mechanism 3, uses an air-closing ring 31 to block the openings of other mold cavities 25, and opens a first through groove 32 at the upper end of the annular outer surface of the air-closing ring 31, so that the gas blown out of the blowing pipe 29 can only enter the mold cavity 25 located at the upper end through the first through groove 32, thereby reducing the operating power of the blowing equipment. Since the air-closing ring 31 is rotatably connected to the front mold 24 and the rear mold 21 through the blowing pipe 29, when the front mold 24 and the rear mold 21 rotate, the air-closing ring 31 will not rotate accordingly, and the first through groove 32 is always located at the upper end of the air-closing ring 31. When the next movable block 211 rotates to the upper end, the first through groove 32 is interconnected with the mold cavity 25 formed by the movable block 211 and the front mold 24.

[0041] As an embodiment of the present invention, Figure 5 As shown, a groove 12 is provided at the front end of the inner surface of the fixed frame 1 near the blowing pipe 29, and the blowing pipe 29 is located inside the groove 12. A first sealing groove 33 is provided at the edge of the front end outer surface of the connecting ring 28, and a second sealing groove 34 is provided at the front end outer surface of the front mold 24 near the outside of the connecting ring 28. A sealing cover 36 is provided on the annular outer surface of the blowing pipe 29, and a first sealing ring 331 is fixedly connected to the rear end outer surface of the sealing cover 36 near the first sealing groove 33, and a second sealing ring 341 is fixedly connected to the rear end outer surface of the sealing cover 36 near the second sealing groove 34, the first sealing ring 331 is in contact with the first sealing groove 33, and the second sealing ring 341 is in contact with the second sealing groove 34.

[0042] During operation, since the connecting ring 28 is rotatably connected to the circular groove 27 through the bearing, and the blowing pipe 29 is movably connected to the blowing port 26, there will be a gap at the connection between the blowing pipe 29 and the blowing port 26, and the blown gas can easily escape from the gap to the circular groove 27, and then escape from the circular groove 27 to the outside of the device, thereby affecting the normal operation of the blow molding machine. The present invention strengthens the sealing between the connecting ring 28 and the circular groove 27 by arranging the first sealing ring 331 and the first sealing groove 33 to fit each other, and the second sealing ring 341 and the second sealing groove 34 to fit each other, thereby preventing the gas from escaping from the circular groove 27 to the outside of the device, and ensuring the normal operation of the blow molding machine.

[0043] As an embodiment of the present invention, Figure 5As shown, the annular inner surface of the sealing cover 36 is slidably connected to the blowing pipe 29, and a plurality of electric telescopic rods 35 are fixedly connected to the front end outer surface of the sealing cover 36 near the outer side of the blowing pipe 29, and the front end outer surfaces of the plurality of electric telescopic rods 35 are fixedly connected to the groove 12.

[0044] During operation, in order to ensure the sealing between the connecting ring 28 and the circular groove 27, the second sealing ring 341 should be tightly fitted with the second sealing groove 34. Therefore, when the second sealing groove 34 rotates with the front mold 24, a large friction force will be generated between the second sealing ring 341 and the second sealing groove 34, which may easily cause the second sealing ring 341 to be damaged by the friction force, thereby affecting the sealing effect. The present invention arranges an electric telescopic rod 35. Before the second sealing groove 34 rotates with the front mold 24, the electric telescopic rod 35 is controlled to drive the sealing cover 36 to move forward, so that the first sealing ring 331 is separated from the first sealing groove 33, and the second sealing ring 341 is separated from the second sealing groove 34, thereby avoiding the second sealing ring 341 and the second sealing groove 34 from being damaged by friction when they move relative to each other, thereby ensuring the sealing effect when the second sealing ring 341 and the second sealing groove 34 fit together.

[0045] As an embodiment of the present invention, Figure 6 As shown, a second through groove 215 is provided on the front end outer surface of the rear mold 21 near the outer side of the mold cavity 25, and a protrusion 216 is fixedly connected to the rear end outer surface of the front mold 24 near the second through groove 215, and the protrusion 216 and the second through groove 215 are in contact with each other.

[0046] During operation, since the molded product needs to be picked up manually, the labor of the staff is increased and it brings inconvenience to the staff's operation. The present invention opens a second through groove 215 on the front end outer surface of the rear mold 21 near the outer side of the mold cavity 25. When the mold cavity 25 containing the molded product runs to the lower end, the cylinder 22 located at the rear end of the movable block 211 is controlled to move backward, driving the movable block 211 to move backward and separate from the front mold 24. The molded product in the mold cavity 25 will automatically fall out of the second through groove 215 due to gravity, and there is no need for manual material picking operation, which reduces the labor of the staff and improves the convenience of the device during operation.

[0047] As an embodiment of the present invention, Figure 1 , Figure 2 and Figure 6 As shown, a plurality of limit rods 217 are fixedly connected to the edge of the rear end outer surface of the front mold 24, the rear end of the limit rod 217 passes through the rear mold 21 and is fixedly connected to the movable plate 23, and the annular outer surface of the limit rod 217 is slidably connected to the rear mold 21.

[0048] During operation, due to the lack of a limiting mechanism to limit the movable block 211, when the movable block 211 moves forward with the cylinder 22 and closes with the front mold 24, the movable block 211 is easily affected by gravity, causing its horizontal position to change. When the mold is closed, the two mold cavities 25 are staggered, affecting the production quality of the product. The present invention sets a limiting rod 217 and uses the limiting rod 217 to limit the movable block 211, so as to prevent the movable block 211 from being easily affected by gravity when the movable block 211 moves forward with the cylinder 22 and closes with the front mold 24, causing its horizontal position to change. When the mold is closed, the two mold cavities 25 are staggered, thereby ensuring the production quality of the product.

[0049] Method of use: The present invention sets a rotating mechanism 2. When working, the cylinder 22 at the upper end is first controlled to contract, driving the movable block 211 at the upper end to move backward so as to separate from the front mold 24. The blow molding head 11 extrude the molten plastic between the movable block 211 and the front mold 24. Then the cylinder 22 is controlled to move forward and drive the movable block 211 to close the mold with the front mold 24, so that the molten plastic is located in the mold cavity 25. Then, gas is injected into the mold cavity 25 through the blowing pipe 29 and the blowing port 26, so that the molten plastic expands and fits with the inner surface of the mold cavity 25 to form a shape. Then, the motor 214 is started, and the rotation of the motor 214 drives the gear 212 to rotate. The gear 212 drives the gear ring 20 to rotate, thereby driving the movable plate 23 and the front mold 24 to rotate. The rear mold 21 rotates synchronously with the movable plate 23. When the next movable block 211 rotates to the upper end, the motor 214 stops running, and the cylinder 22 located at the rear end of the movable block 211 moves backward, driving the movable block 211 to move backward and separate it from the front mold 24. The product molding is completed in the same way as above, and the motor 214 is started again to drive the movable blocks 211 to rotate in turn. When the movable block 211 originally located at the upper end rotates to the lower end, the product molded therein has enough time to cool down. The cylinder 22 located at the rear end of the movable block 211 is controlled to move backward again, driving the movable block 211 to move backward and separate it from the front mold 24. The molded product in the mold cavity 25 will automatically fall from the second through slot 215 due to gravity, and the discharge is completed.

[0050] The electrical components appearing in this article are all connected to the external main controller and 220V AC power through a transformer, and the main controller can be a conventional known device that controls a computer, etc. The product model provided by the present invention is only used for the technical solution according to the structural characteristics of the product. The product will be adjusted and modified after purchase to make it more matching and consistent with the technical solution of the present invention. It is a technical solution for the best application of the technical solution. The model of its product can be replaced and modified according to the required technical parameters, which is well known to technical personnel in this field. Therefore, technical personnel in this field can clearly obtain the corresponding use effect through the technical solution provided by the present invention.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bottle blow molding machine, comprising a fixed frame (1), characterized in that: The inner surface of the fixed frame (1) is rotatably connected to a rotating mechanism (2) at both the front and rear sides; The rotating mechanism (2) comprises a rear mold (21), a cylinder (22), a movable plate (23), a front mold (24), a mold cavity (25), an air blowing port (26), a circular groove (27), a connecting ring (28), an air blowing pipe (29), a gear ring (20), a movable block (211), a gear (212), a connecting rod (213) and a motor (214); the rear mold (21) is composed of a plurality of movable blocks (211) spliced ​​together, and the rear end outer surfaces of the plurality of movable blocks (211) are all fixed. The rear end of the cylinder (22) is fixedly connected to a movable plate (23), and the rear end of the movable plate (23) is rotatably connected to the fixed frame (1) through a bearing. The front end outer surface of the rear mold (21) is fittedly connected to the front mold (24), and the front end outer surface of the front mold (24) is rotatably connected to the fixed frame (1) through a bearing. The outer surface of one end of the rear mold (21) adjacent to the front mold (24) is provided with a plurality of mold cavities (25). The blocks (211) correspond to the mold cavities (25) one by one, a blowing port (26) is provided at the inner center of the front mold (24), a circular groove (27) is provided at the center of the front end outer surface of the front mold (24), the annular inner surface of the circular groove (27) is rotatably connected to a connecting ring (28) through a bearing, the annular inner surface of the connecting ring (28) is fixedly connected to a blowing pipe (29), the annular outer surfaces of the front mold (24) and the movable plate (23) are both fixedly connected to a gear ring (20), and the two One side of the outer surface of the gear ring (20) is meshedly connected with a gear (212), the two gears (212) are connected via a connecting rod (213), the rear end of the connecting rod (213) is fixedly connected with a motor (214), the rear end of the motor (214) is fixedly connected to a fixed frame (1), the front end outer surface of the connecting rod (213) is rotatably connected to the fixed frame (1) via a bearing, and a blow molding head (11) is arranged directly above the rear mold (21) and the front mold (24).

2. A bottle blow molding machine according to claim 1, characterized in that: The rear end outer surface of the air blowing pipe (29) is fixedly connected with an air-blocking mechanism (3); The air-closing mechanism (3) comprises an air-closing ring (31) and a first through groove (32); the air-closing ring (31) is fixedly connected to the rear end outer surface of the air blowing pipe (29); the annular outer surface of the air-closing ring (31) is in contact with the inner wall of the air blowing port (26); and the first through groove (32) is provided at the upper end of the annular outer surface of the air-closing ring (31).

3. A bottle blow molding machine according to claim 2, characterized in that: A groove (12) is provided at the front end of the inner surface of the fixed frame (1) near the position of the blowing pipe (29), and the blowing pipe (29) is located inside the groove (12). A first sealing groove (33) is provided at the edge of the front end outer surface of the connecting ring (28). A second sealing groove (34) is provided at the front end outer surface of the front mold (24) near the outer side of the connecting ring (28). A sealing cover (36) is provided on the annular outer surface of the blowing pipe (29). A first sealing ring (331) is fixedly connected to the rear end outer surface of the sealing cover (36) near the first sealing groove (33), and a second sealing ring (341) is fixedly connected to the rear end outer surface of the sealing cover (36) near the second sealing groove (34). The first sealing ring (331) and the first sealing groove (33) are in contact with each other, and the second sealing ring (341) and the second sealing groove (34) are in contact with each other.

4. A bottle blow molding machine according to claim 3, characterized in that: The annular inner surface of the sealing cover (36) is slidably connected to the air blowing pipe (29), and a plurality of electric telescopic rods (35) are fixedly connected to the front end outer surface of the sealing cover (36) near the outer side of the air blowing pipe (29), and the front end outer surfaces of the plurality of electric telescopic rods (35) are fixedly connected to the groove (12).

5. The bottle blow molding machine according to claim 1, characterized in that: A second through groove (215) is provided on the front end outer surface of the rear mold (21) near the outer side of the mold cavity (25), and a protrusion (216) is fixedly connected to the rear end outer surface of the front mold (24) near the second through groove (215), and the protrusion (216) and the second through groove (215) are in contact with each other.

6. A bottle blow molding machine according to claim 5, characterized in that: A plurality of limiting rods (217) are fixedly connected to the edge of the rear end outer surface of the front mold (24); the rear end of the limiting rod (217) passes through the rear mold (21) and is fixedly connected to the movable plate (23); and the annular outer surface of the limiting rod (217) is slidably connected to the rear mold (21).

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