Bottle blowing machine for PET bottle production and processing

Abstract

The utility model provides a bottle blowing machine for PET bottle production and processing, which comprises a processing table, a bottle blowing assembly is arranged above the processing table, an opening and closing assembly is arranged on the side edge of the bottle blowing assembly, and in the PET bottle production and processing process, a lifting electric push rod drives a blowing seat to move downwards to be in butt joint with a bottle opening at the upper end of a PET bottle preform, so that the bottle blowing assembly is opened and closed. Then an air blowing pump works, blow molding is conducted on a PET bottle preform through a pressure-resistant hose, a connector and an air guide cavity, after blow molding is completed, the air blowing pump is closed, a lifting electric push rod is controlled to do contraction action, then two sets of forming molds are driven by an opening and closing electric push rod to move towards the outer side for mold opening, and in the process, a blocking rod can limit the PET bottle subjected to blow molding, so that the PET bottle preform is subjected to blow molding; the blow-molded PET bottles are prevented from moving left and right along with the opened forming molds, and after the two sets of forming molds move outwards by a certain distance, the blow-molded PET bottles can fall down to a belt conveyor through a falling guide cavity to be conveyed to the next procedure.

Description

Technical Field

[0001] The utility model relates to the technical field of PET bottle processing, in particular to a bottle blowing machine for PET bottle production and processing. Background Art

[0002] PET bottles have strong applicability and are widely used in daily necessities, daily chemical packaging and other fields. Due to their light weight, good preservation performance, and the technical trend of emphasizing heat resistance, pressure resistance and other functions, PET bottles have become the mainstream of today's drinking packaging. During the production and processing of PET bottles, a bottle blowing machine is needed to blow the preheated bottle blanks into the required size.

[0003] A bottle blowing machine for PET bottle production and processing provided by the publication number "CN217862731U" moves the electric slider along the guide rod to the right, then drives the elastic sheet to sink, thereby inserting the connecting rod on the connecting seat into the docking block. When the electric slider moves in the reverse direction, the elastic sheet protrudes, thereby connecting the first telescopic cylinder with the mold. Moreover, the two can be quickly disassembled in the opposite way, thus improving the convenience of using the device. When the third telescopic cylinder extends, the clamping plate clamps the bottle mouth, and then the electric guide rail drives the connecting sleeve to move forward along itself. After moving to the appropriate position, the workpiece drops when the third telescopic cylinder contracts.

[0004] However, the above technical solution and the existing technologies have the following defects:

[0005] Firstly, although the bottle blowing machine can pick up the blown workpieces through the picking device, the picking device has cumbersome steps and a long time during the picking process. Secondly, the mold in the bottle blowing machine does not have a corresponding limiting structure to limit it, resulting in that the mold cannot be quickly and accurately closed directly below the docking sleeve during each mold closing process. During actual use, the staff often needs to finely adjust the closed mold, which affects the bottle blowing efficiency of the bottle blowing machine and has poor practicability. Content of the Utility Model

[0006] The purpose of the utility model is to provide a bottle blowing machine for PET bottle production and processing to solve the problems put forward in the above background art.

[0007] To achieve the above purpose, the utility model provides the following technical solution:

[0008] A bottle blowing machine for PET bottle production and processing includes a processing table, a back support plate and PET bottle blanks. The back end face of the processing table is fixedly connected with the back support plate. PET bottle blanks are placed above the processing table. A bottle blowing component is arranged above the processing table, and the bottle blowing component is used for blowing the preheated PET bottle blanks. An opening and closing component is arranged on the side of the bottle blowing component, and the opening and closing component is used for driving the bottle blowing component to open and close.

[0009] Preferably, the bottle blowing assembly includes a forming mold, a blowing seat, a lifting electric push rod, a blowing pump, a pressure-resistant hose, a gas guide cavity and a connector. The forming mold is attached to the upper end surface of the processing table. The blowing pump is installed on the upper end surface of the back support plate. The lifting electric push rod is installed on the upper side of the inner wall of the back support plate. The blowing seat is installed at the lower end of the lifting electric push rod. A gas guide cavity is formed inside the blowing seat. A connector is fixedly connected to the left side of the circumferential side of the blowing seat. A pressure-resistant hose is connected between the inlet of the connector and the outlet of the blowing pump.

[0010] Preferably, the opening and closing assembly includes a blocking rod, a support side plate, a positioning side plate, an opening and closing electric push rod, a connecting seat and a guiding and falling cavity. The positioning side plates are symmetrically and fixedly connected to the left and right sides of the upper end surface of the processing table. The opening and closing electric push rod is installed on the upper side of the inner part of the positioning side plate. The connecting seat is fixedly connected to the left end of the opening and closing electric push rod. The support side plates are symmetrically and fixedly connected to the left and right sides of the upper end surface of the processing table. The blocking rod is arranged on the upper side of the inner wall of the support side plate. A guiding and falling cavity is formed in the middle position inside the processing table.

[0011] Preferably, a follower rod is arranged on the upper side of the right end surface of the forming mold. A blocking ring is arranged on the right side of the circumferential side of the follower rod, and the blocking ring and the follower rod are of an integral structure.

[0012] Preferably, a lining sealing ring is arranged on the lower side inside the blowing seat, and the inner diameter of the lining sealing ring is the same as the outer diameter of the upper end surface of the PET bottle preform.

[0013] Preferably, a belt conveyor is installed below the processing table, and the conveying direction of the belt conveyor is backward. The shape of the back support plate is L-shaped.

[0014] Preferably, a through cavity is formed on the upper end surface of the forming mold, and the through cavity matches the PET bottle preform. A forming cavity is formed inside the forming mold. The extendable distance of the lifting electric push rod is greater than the distance between the blowing seat and the forming mold. The extendable distance of the pressure-resistant hose is greater than the extendable distance of the lifting electric push rod.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] 1. In the process of producing and processing PET bottles, the lifting electric push rod drives the blowing seat to move downward and connect with the upper end of the bottle mouth of the PET bottle embryo, and then the blowing pump is operated and the PET bottle embryo is blown through the pressure-resistant hose, the connector and the air guide cavity. After the blow molding is completed, the blowing pump is turned off and the lifting electric push rod is controlled to shrink, and then the two sets of molding molds are driven to move outward to open the mold by the opening and closing electric push rod. In this process, the blocking rod will limit the blow-molded PET bottle to prevent the blow-molded PET bottle from moving left and right with the mold opening. When the two sets of molding molds move outward to a certain distance, the blow-molded PET bottle will automatically fall down through the guide cavity to the belt conveyor and be transported to the next process, so as to facilitate the unloading of the blow-molded PET bottle;

[0017] 2. When the opening and closing electric push rod drives the two sets of molding molds to move inwards for mold closing, the follower rod and the blocking rod will limit the molding mold to prevent the molding mold from moving excessively during the process of moving inwards, so that the two sets of molding molds can be closed at the center of the processing table every time, and the staff does not need to frequently fine-tune the molding molds after mold closing, thereby ensuring the efficiency of blowing PET bottle preforms and having good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is a structural diagram of the bottle blowing assembly and the opening and closing assembly in the utility model;

[0020] Figure 3 It is a front cross-sectional view of the bottle blowing assembly and the opening and closing assembly in the utility model;

[0021] Figure 4 This is a structural diagram of the forming mold after the mold is opened in the utility model;

[0022] Figure 5 It is a partial structural diagram of the opening and closing component in the utility model.

[0023] In the figure: 1. processing table; 2. bottle blowing assembly; 21. forming mold; 211. through cavity; 22. blowing seat; 221. liner sealing ring; 23. lifting electric push rod; 24. blowing pump; 25. pressure-resistant hose; 26. air guide cavity; 27. connector; 3. back support plate; 4. PET bottle embryo; 5. opening and closing assembly; 51. blocking rod; 52. supporting side plate; 53. positioning side plate; 54. opening and closing electric push rod; 55. follower rod; 551. blocking ring; 56. belt conveyor; 57. connecting seat; 58. guide cavity. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figures 1-5 , the utility model provides a technical solution:

[0026] Embodiment 1:

[0027] A bottle blowing machine for PET bottle production and processing, comprising a processing table 1, a back support plate 3 and a PET bottle embryo 4, the back support plate 3 is fixedly connected to the rear end surface of the processing table 1, the back support plate 3 is L-shaped, and the L-shaped back support plate 3 can support the blowing pump 24 and the lifting electric push rod 23, the PET bottle embryo 4 is placed above the processing table 1, and a bottle blowing assembly 2 is arranged above the processing table 1, and the bottle blowing assembly 2 is used to blow the preheated PET bottle embryo 4, and the side of the bottle blowing assembly 2 is provided with an opening and closing assembly 5, and the opening and closing assembly 5 is Component 5 is used to drive the bottle blowing assembly 2 to open and close. A control panel is installed on the right side of the front end surface of the processing table 1, and the control panel is connected to the blowing pump 24, the lifting electric push rod 23, the opening and closing electric push rod 54 and the belt conveyor 56 through wires. The control panel is convenient for the staff to control the blowing pump 24, the lifting electric push rod 23, the opening and closing electric push rod 54 and the belt conveyor 56 according to the needs. Since the internal detailed structure and working principle of the control panel are relatively mature technologies in the existing technology, they will not be described in detail here.

[0028] The bottle blowing assembly 2 includes a forming mold 21, a blowing seat 22, a lifting electric push rod 23, a blowing pump 24, a pressure-resistant hose 25, an air guide cavity 26 and a connector 27. The upper end surface of the processing table 1 is attached with a forming mold 21. The forming mold 21 is attached with two groups, and the two groups of forming molds 21 have the same specifications. The two groups of forming molds 21 facilitate the PET bottle embryo 4 to be blown to the required size and shape. The upper end surface of the back support plate 3 is installed with a blowing pump 24. The blowing pump 24 can blow compressed air into the pressure-resistant hose 25 when working. The upper side of the inner wall of the back support plate 3 is installed with a lifting electric push rod 23. The push rod 23, the lifting electric push rod 23 can extend a distance greater than the distance between the blowing seat 22 and the forming mold 21, the lifting electric push rod 23 can drive the blowing seat 22 to move up and down, the blowing seat 22 is installed at the lower end of the lifting electric push rod 23, the blowing seat 22 can be connected to the bottle mouth at the upper end of the PET bottle embryo 4 for blowing, and an air guide cavity 26 is opened inside the blowing seat 22, the air guide cavity 26 facilitates air to enter the inside of the blowing seat 22, and a connector 27 is fixedly connected to the left side of the annular side of the blowing seat 22, and the connector 27 facilitates the air guide cavity 26 to be connected with the pressure-resistant hose 25.

[0029] A pressure-resistant hose 25 is connected between the inlet of the connector 27 and the outlet of the blowing pump 24. The extendable distance of the pressure-resistant hose 25 is greater than the extendable distance of the lifting electric push rod 23. The pressure-resistant hose 25 can guide the compressed air blown out by the blowing pump 24 to the connector 27. An inner liner sealing ring 221 is arranged on the lower side of the inside of the blowing seat 22. The inner diameter of the inner liner sealing ring 221 is the same as the outer diameter of the upper end surface of the PET bottle embryo 4. The inner liner sealing ring 221 makes the blowing seat 22 more sealed after being connected with the bottle mouth of the upper end of the PET bottle embryo 4. A molding cavity is provided inside the molding mold 21. The molding cavity facilitates the PET bottle embryo 4 in the molding mold 21 to be blown into a desired size and shape. A through cavity 211 is provided on the upper end surface of the molding mold 21, and the through cavity 211 matches the PET bottle embryo 4. The through cavity 211 facilitates the staff to vertically place the PET bottle embryo 4 into the molding mold 21.

[0030] Embodiment 2:

[0031] On the basis of Example 1, in this embodiment, when the opening and closing electric push rod 54 drives the two sets of molding molds 21 to move outward for mold opening, the blocking rod 51 will limit the blow-molded PET bottle to prevent the blow-molded PET bottle from moving left and right with the mold opening molding mold 21. When the two sets of molding molds 21 move outward to a certain distance, the blow-molded PET bottle will fall downward through the guide cavity 58 to the belt conveyor 56 and be transported to the next process. When the opening and closing electric push rod 54 drives the two sets of molding molds 21 to move inward for mold closing, the follower rod 55 and the blocking rod 51 will limit the molding mold 21 to prevent the molding mold 21 from moving excessively during the inward movement, so that the two sets of molding molds 21 can be closed at the center position of the processing table 1 every time.

[0032] The opening and closing assembly 5 includes a blocking rod 51, a supporting side plate 52, a positioning side plate 53, an opening and closing electric push rod 54, a connecting seat 57 and a guide cavity 58. The left and right sides of the upper end surface of the processing table 1 are symmetrically fixedly connected with the positioning side plates 53, and the positioning side plates 53 can support the opening and closing electric push rod 54. The opening and closing electric push rod 54 is installed on the upper side of the positioning side plate 53. Two groups of opening and closing electric push rods 54 are installed, and the specifications of the two groups of opening and closing electric push rods 54 are the same. The left end of the opening and closing electric push rod 54 is fixedly connected with the connecting seat 57. The push rod 54 can drive the forming mold 21 to move left and right to open and close through the connecting seat 57. The left and right sides of the upper end surface of the processing table 1 are symmetrically fixedly connected with the supporting side plates 52. The supporting side plates 52 are connected to the blocking rod 51 by welding. The supporting side plates 52 can support and fix the blocking rod 51. The blocking rod 51 is arranged on the upper side of the inner wall of the supporting side plates 52. The blocking rod 51 can limit the PET bottle after blow molding to prevent the PET bottle after blow molding from moving left and right with the forming mold 21.

[0033] In the middle position inside the processing table 1, a guiding cavity 58 is provided. The inner diameter of the guiding cavity 58 is larger than the outer diameter of the PET preform 4 after blow molding. The guiding cavity 58 facilitates the downward fall of the PET bottle after blow molding into the belt conveyor 56. On the upper side of the right end face of the molding die 21, a follower rod 55 is provided. The follower rod 55 is connected to the molding die 21 by welding. On the right side of the circumferential side of the follower rod 55, a blocking ring 551 is provided, and the blocking ring 551 and the follower rod 55 are of an integral structure. The follower rod 55 and the blocking rod 51 limit the molding die 21 to prevent the molding die 21 from moving excessively during the inward movement, so that the two sets of molding dies 21 can be closed at the center position of the processing table 1 each time. A belt conveyor 56 is installed below the processing table 1, and the conveying direction of the belt conveyor 56 is backward. When the belt conveyor 56 is working, it can convey the fallen PET bottles after blow molding backward to the next process.

[0034] Working principle: During the production and processing of PET bottles, the staff first vertically place the preheated PET preform 4 in the molding die 21 in the closed mold state (refer to Figure 1 or Figure 3), at this time, the lifting electric push rod 23 is controlled by the control panel to extend, so that the lifting electric push rod 23 drives the blowing seat 22 to move downward and connect with the upper bottle mouth of the PET bottle preform 4, and then the blowing pump 24 is started to blow compressed air to the pressure-resistant hose 25, and the compressed air will enter the PET bottle preform 4 through the pressure-resistant hose 25, the connector 27 and the air guide cavity 26, so as to blow the PET bottle preform 4. In this process, the PET bottle preform 4 will be expanded to fill the molding cavity. After the PET preform 4 is blow-molded, the blowing pump 24 can be turned off and the lifting electric push rod 23 can be controlled to retract, so that the lifting electric push rod 23 drives the blowing seat 22 to move up to the initial position; then the opening and closing electric push rods 54 on the left and right sides are controlled to retract, so that the opening and closing electric push rods 54 on the left and right sides drive the two sets of molding molds 21 to move outwards to open the mold. In this process, the blocking rod 51 that remains stationary will limit the position of the blow-molded PET bottle to prevent the blow-molded PET bottle from following the mold opening. The mold 21 moves left and right. When the two sets of molding molds 21 move outward to a certain distance, the blow-molded PET bottle will fall downward to the belt conveyor 56 through the guide cavity 58, so that the working belt conveyor 56 can transport the blow-molded PET bottle to the next process to the rear side. Since the outer surface of the blow-molded PET bottle is relatively smooth, the blocking rod 51 will not hinder the blow-molded PET bottle from moving downward and falling. When the blow-molded PET bottle falls onto the belt conveyor 56, the staff controls the opening and closing electric push rods 54 on the left and right sides to extend, so that the opening and closing electric push rods 54 on the left and right sides drive the two sets of molding molds 21 to move inward for mold closing. In this process, the follower rod 55 and the blocking rod 51 will limit the molding mold 21 to prevent the molding mold 21 from moving too much during the process of moving inward, so that the two sets of molding molds 21 can be molded at the center of the processing table 1 each time. After the mold closing is completed, the above operation is repeated to blow the next group of PET bottle embryos 4.

[0035] 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 blow molding machine for PET bottle production and processing, comprising a processing table (1), a back support plate (3) and a PET bottle preform (4), characterized in that: A back support plate (3) is fixedly connected to the rear end face of the processing table (1). A PET preform (4) is placed above the processing table (1). A blow molding assembly (2) is arranged above the processing table (1), and the blow molding assembly (2) is used for blow molding the preheated PET preform (4). A opening and closing assembly (5) is arranged on the side of the blow molding assembly (2), and the opening and closing assembly (5) is used for driving the blow molding assembly (2) to open and close.

2. A bottle blowing machine for PET bottle production and processing according to claim 1, characterized in that: The blow molding assembly (2) includes a molding die (21), a blowing seat (22), a lifting electric push rod (23), a blowing pump (24), a pressure-resistant hose (25), a gas guide cavity (26) and a connector (27). The molding die (21) is attached to the upper end face of the processing table (1). The blowing pump (24) is installed on the upper end face of the back support plate (3). The lifting electric push rod (23) is installed on the upper side of the inner wall of the back support plate (3). The lower end of the lifting electric push rod (23) is installed with the blowing seat (22). A gas guide cavity (26) is formed inside the blowing seat (22). A connector (27) is fixedly connected to the left side of the circumferential side of the blowing seat (22). A pressure-resistant hose (25) is connected between the inlet of the connector (27) and the outlet of the blowing pump (24).

3. A bottle blowing machine for PET bottle production and processing according to claim 1, characterized in that: The opening and closing assembly (5) includes a blocking rod (51), a support side plate (52), a positioning side plate (53), an opening and closing electric push rod (54), a connecting seat (57) and a guiding and falling cavity (58). The positioning side plates (53) are symmetrically and fixedly connected to the left and right sides of the upper end face of the processing table (1). The opening and closing electric push rod (54) is installed on the upper side of the inner part of the positioning side plate (53). The left end of the opening and closing electric push rod (54) is fixedly connected to the connecting seat (57). The support side plates (52) are symmetrically and fixedly connected to the left and right sides of the upper end face of the processing table (1). The blocking rod (51) is arranged on the upper side of the inner wall of the support side plate (52). A guiding and falling cavity (58) is formed in the middle position inside the processing table (1).

4. A bottle blowing machine for PET bottle production and processing according to claim 2, characterized in that: A follower rod (55) is arranged on the upper side of the right end face of the molding die (21). A blocking ring (551) is arranged on the right side of the circumferential side of the follower rod (55), and the blocking ring (551) and the follower rod (55) are of an integral structure.

5. A bottle blowing machine for PET bottle production and processing according to claim 2, characterized in that: A lining sealing ring (221) is arranged on the lower side inside the blowing seat (22), and the inner diameter of the lining sealing ring (221) is the same as the outer diameter of the upper end face of the PET preform (4).

6. A blow molding machine for PET bottle production and processing according to claim 1, characterized in that: A belt conveyor (56) is installed below the processing table (1), and the conveying direction of the belt conveyor (56) is backward. The shape of the back support plate (3) is L-shaped.

7. A bottle blowing machine for PET bottle production and processing according to claim 2, characterized in that: A through cavity (211) is formed in the upper end face of the molding die (21), and the through cavity (211) is matched with the PET preform (4). A molding cavity is formed inside the molding die (21). The extendable distance of the lifting electric push rod (23) is greater than the distance between the blowing seat (22) and the molding die (21). The extendable distance of the pressure-resistant hose (25) is greater than the extendable distance of the lifting electric push rod (23).

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