A plastic blow molding machine with easy-to-change blow molding head

Abstract

This invention relates to the field of blow molding machine technology and provides a plastic blow molding machine with an easy-to-change blow molding head. It includes a worktable with a mounting bracket and a placement platform. A blow molding machine assembly is mounted on the top of the mounting bracket. The machine further includes: a mounting mechanism comprising a mounting plate with a turntable at its bottom; a plurality of mounting sleeves arranged in a ring on the turntable; a telescopic rod slidably mounted in each mounting sleeve; a blow molding mechanism mounted on the end of the telescopic rod away from the mounting sleeve; a sliding rod mounted on the side wall of the telescopic rod; and a sliding groove on the mounting plate matching the sliding rod. A connecting assembly includes a sliding plate with a guide block mounted on it; and a guide post on the blow molding machine assembly that cooperates with the guide block. This device enables automatic switching of the blow molding mechanism without stopping the machine, is simple to operate, has a fast switching speed, and can improve work efficiency.

Description

Technical Field

[0001] This invention belongs to the field of blow molding machine technology, and particularly relates to a plastic blow molding machine that facilitates the replacement of blow molding heads. Background Technology

[0002] A blow molding machine is a machine that sprays liquid plastic and uses the air force from the machine to blow the plastic body into a mold cavity of a certain shape, thereby making a product. The plastic is melted and extruded in a screw extruder in a measured quantity, then formed through a die, cooled by air blowing from an air ring, and then pulled at a certain speed by a traction machine and wound into a roll by a winding machine.

[0003] Existing blow molding machines require different molds to produce products of different specifications. After the mold is replaced, the blow molding head also needs to be replaced. However, since existing blow molding machines are only designed with a single blow molding head, the blow molding head needs to be disassembled before replacement, which is cumbersome. Moreover, when the blow molding head is replaced, the machine is stopped and production cannot be carried out. Summary of the Invention

[0004] The purpose of this invention is to provide a plastic blow molding machine that facilitates the replacement of blow molding heads, thereby solving the problem that existing blow molding machines, which are designed with only a single blow molding head, require disassembly of the blow molding head before replacement, resulting in cumbersome operation and the machine being in a stopped state and unable to carry out production when the blow molding head is replaced.

[0005] The present invention is implemented as follows: a plastic blow molding machine with an easy-to-change blow molding head includes a worktable, on which a mounting bracket and a placement platform are provided, and a blow molding machine assembly is mounted on the top of the mounting bracket. The machine also includes:

[0006] The mounting mechanism includes a mounting plate mounted below a mounting bracket. A turntable is located at the bottom of the mounting plate, and a motor for rotating the turntable is also mounted on the mounting plate. A plurality of mounting sleeves are arranged in a ring on the turntable. A telescopic rod is slidably mounted within each mounting sleeve. A blow molding mechanism for blow molding is detachably mounted at the end of the telescopic rod away from the mounting sleeve. A sliding rod is mounted on the side wall of the telescopic rod, and a sliding groove matching the sliding rod is provided on the mounting plate. The sliding groove includes a semi-circular arc segment and a semi-elliptical arc segment.

[0007] A connecting assembly includes a sliding plate slidably mounted on a mounting plate, a second spring connecting the sliding plate and the mounting plate, and the sliding plate abutting against a sliding rod. An upwardly inclined guide block is mounted on the sliding plate. A guide post is provided on the blow molding machine assembly, and a guide groove matching the guide post is provided on the guide block.

[0008] In a further technical solution, the blow molding machine assembly includes a blow molding machine body mounted on a mounting bracket, a fixed air guide pipe is provided below the blow molding machine body, a sliding air guide joint is slidably installed in the fixed air guide pipe, and a guide post is installed at the bottom of the sliding air guide joint. A first spring is also connected between the sliding air guide joint and the fixed air guide pipe.

[0009] In a further technical solution, the blow molding mechanism includes a fixed plate, a plurality of blow molding heads are provided on the fixed plate, and an air inlet connector is provided on the top of the fixed plate. The air inlet connector is used to connect with a sliding air guide connector, and the air inlet connector is simultaneously connected to each blow molding head on the fixed plate.

[0010] A further technical solution is to provide a sealing gasket at the bottom of the sliding air guide joint.

[0011] In a further technical solution, the sealing gasket is made of rubber.

[0012] In a further technical solution, four mounting sleeves are provided.

[0013] In a further technical solution, four blow molding mechanisms are provided, and the specifications of each blow molding mechanism are different.

[0014] This invention provides a plastic blow molding machine with an easy-to-change blow molding head. In use, the motor is started, driving the turntable to rotate. The turntable rotates the mounting sleeve, which in turn drives the blow molding mechanism to rotate synchronously via a telescopic rod. Simultaneously, with the cooperation of the sliding rod and the sliding groove, the designated blow molding mechanism can move to the farthest end of the semi-elliptical arc segment in the sliding groove, positioned directly below the blow molding machine assembly. As the sliding rod slides along the sliding groove, it simultaneously pushes the sliding plate along the mounting plate. The sliding plate drives the guide block to move synchronously, and the guide block drives the guide post to slide along the guide groove. Under the action of the horizontally moving sliding plate, the sliding air guide in the blow molding machine assembly slides vertically. When the sliding air guide reaches its lower limit position, its bottom end connects and engages with the blow molding mechanism, allowing gas to be supplied to the blow molding mechanism through the blow molding machine assembly. The blow molding mechanism can then perform blow molding on the plastic preform on the platform. To switch between different blow molding mechanisms, simply rotate the turntable. When switching occurs, the sliding plate moves in the opposite direction under the elastic restoring force of the second spring, causing the blow molding machine assembly to automatically disengage from the blow molding mechanism. Once the next blow molding mechanism reaches its working position, the blow molding machine assembly automatically connects to it. This device enables automatic switching of blow molding mechanisms without stopping the machine, is simple to operate, and offers fast switching speed, thus improving work efficiency. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the structure of a plastic blow molding machine that facilitates the replacement of blow molding heads, provided by an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the installation mechanism in a plastic blow molding machine that facilitates the replacement of blow molding heads, provided by an embodiment of the present invention.

[0017] Figure 3 A three-dimensional structural diagram of a mounting plate in a plastic blow molding machine that facilitates the replacement of blow molding heads, provided by an embodiment of the present invention;

[0018] Figure 4 This invention provides an embodiment of a plastic blow molding machine with an easily replaceable blow molding head. Figure 1 Enlarged view of point A in the image;

[0019] Figure 5 This is a schematic diagram of the structure of a guide block and guide column in a plastic blow molding machine that facilitates the replacement of blow molding heads, provided as an embodiment of the present invention.

[0020] In the attached diagram: 1. Workbench; 11. Mounting bracket; 12. Placement platform; 2. Mounting mechanism; 21. Mounting plate; 22. Motor; 23. Turntable; 24. Mounting sleeve; 25. Telescopic rod; 26. Sliding rod; 27. Sliding groove; 3. Blow molding mechanism; 31. Blow molding head; 32. Fixing plate; 33. Air inlet connector; 4. Blow molding machine assembly; 41. Blow molding machine body; 42. Fixed air guide pipe; 43. Sliding air guide connector; 44. First spring; 5. Connecting assembly; 51. Sliding plate; 52. Second spring; 53. Guide block; 54. Guide column; 55. Guide groove. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0022] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0023] like Figure 1-5 As shown, a plastic blow molding machine with an easy-to-change blow molding head provided in one embodiment of the present invention includes a worktable 1, on which a mounting bracket 11 and a placement platform 12 are provided. A blow molding machine assembly 4 is mounted on the top of the mounting bracket 11, and the machine also includes:

[0024] Mounting mechanism 2 includes a mounting plate 21 mounted below mounting bracket 11. A turntable 23 is located at the bottom of the mounting plate 21, and a motor 22 for rotating the turntable 23 is also mounted on the mounting plate 21. A plurality of mounting sleeves 24 are arranged in a ring on the turntable 23. A telescopic rod 25 is slidably mounted in each mounting sleeve 24. A blow molding mechanism 3 for blow molding is detachably mounted at the end of the telescopic rod 25 away from the mounting sleeve 24. A sliding rod 26 is mounted on the side wall of the telescopic rod 25, and a sliding groove 27 matching the sliding rod 26 is provided on the mounting plate 21. The sliding groove 27 includes a semi-circular arc segment and a semi-elliptical arc segment.

[0025] The connecting component 5 includes a sliding plate 51 slidably mounted on the mounting plate 21, a second spring 52 connecting the sliding plate 51 and the mounting plate 21, and the sliding plate 51 abutting against the sliding rod 26. A guide block 53 inclined upward is mounted on the sliding plate 51. A guide post 54 is provided on the blow molding machine component 4, and a guide groove 55 matching the guide post 54 is opened on the guide block 53.

[0026] In this embodiment of the invention, four mounting sleeves 24 and four blow molding mechanisms 3 are provided, and each blow molding mechanism 3 has a different specification. In use, the motor 22 is started, which drives the turntable 23 to rotate. The turntable 23 drives the mounting sleeves 24 to rotate, and the mounting sleeves 24 drive the blow molding mechanisms 3 to rotate synchronously via the telescopic rod 25. Simultaneously, under the cooperative action of the sliding rod 26 and the sliding groove 27, the designated blow molding mechanism 3 can move to the farthest end of the semi-elliptical arc segment in the sliding groove 27 under the drive of the telescopic rod 25. At this time, the blow molding mechanism 3 is located directly below the blow molding machine assembly 4. As the sliding rod 26 slides along the sliding groove 27, it simultaneously pushes the sliding plate 51 to slide along the mounting plate 21. The sliding plate 51 drives the guide block 53 to move synchronously, and the guide block 53 drives the guide column 54 to slide along the guide groove 55. Thus, under the action of the horizontally moving sliding plate 51, the sliding air connector 43 in the blow molding machine assembly 4 slides vertically. When the sliding air connector 43 moves to the lower limit position, its bottom end connects and engages with the blow molding mechanism 3, thereby allowing gas to be supplied to the blow molding mechanism 3 through the blow molding machine assembly 4. The blow molding mechanism 3 can then perform blow molding on the plastic preform on the placement table 12. To switch between different blow molding mechanisms 3, simply rotate the turntable 23. During switching, under the elastic restoring force of the second spring 52, the sliding plate 51 moves in the opposite direction, causing the blow molding machine assembly 4 to automatically disengage from the blow molding mechanism 3. After the next blow molding mechanism 3 moves to the working position, the blow molding machine assembly 4 will automatically connect with that blow molding mechanism 3.

[0027] like Figure 1 ,4 As shown in Figure 5, in a preferred embodiment of the present invention, the blow molding machine assembly 4 includes a blow molding machine body 41 mounted on a mounting bracket 11. A fixed air guide pipe 42 is provided below the blow molding machine body 41. A sliding air guide joint 43 is slidably installed in the fixed air guide pipe 42, and a guide post 54 is installed at the bottom of the sliding air guide joint 43. A first spring 44 is also connected between the sliding air guide joint 43 and the fixed air guide pipe 42.

[0028] In this embodiment of the invention, during use, under the cooperative action of the guide post 54 and the guide groove 55, the guide block 53 can drive the sliding air connector 43 to slide up and down, thereby connecting the sliding air connector 43 with the blow molding mechanism 3, and thus transmitting gas to the blow molding mechanism 3 through the sliding air connector 43 for blow molding.

[0029] like Figure 1 and 2 As shown, in a preferred embodiment of the present invention, the blow molding mechanism 3 includes a fixed plate 32, a plurality of blow molding heads 31 are provided on the fixed plate 32, and an air inlet connector 33 is provided on the top of the fixed plate 32. The air inlet connector 33 is used to connect with the sliding air guide connector 43, and the air inlet connector 33 is simultaneously connected to each blow molding head 31 on the fixed plate 32.

[0030] In this embodiment of the invention, when in use, after the sliding air guide 43 moves downward, it will connect with the air inlet 33. The sliding air guide 43 delivers gas to the air inlet 33, and the air inlet 33 can deliver gas to each blow molding head 31 at the same time, thereby performing blow molding of multiple products and improving work efficiency.

[0031] In a preferred embodiment of the present invention, a sealing gasket is provided at the bottom of the sliding air connector 43, and the sealing gasket is made of rubber. The sealing gasket, made of rubber, effectively prevents gas leakage at the connection between the sliding air connector 43 and the air inlet connector 33, ensuring efficient gas delivery.

[0032] Working principle: During use, the motor 22 is started, which drives the turntable 23 to rotate. The turntable 23 drives the mounting sleeve 24 to rotate, and the mounting sleeve 24 drives the blow molding mechanism 3 to rotate synchronously via the telescopic rod 25. At the same time, under the cooperation of the sliding rod 26 and the sliding groove 27, the designated blow molding mechanism 3 can move to the farthest end of the semi-elliptical arc segment in the sliding groove 27 under the drive of the telescopic rod 25. At this time, the blow molding mechanism 3 is located directly below the blow molding machine assembly 4. As the sliding rod 26 slides along the sliding groove 27, it simultaneously pushes the sliding plate 51 to slide along the mounting plate 21. The sliding plate 51 drives the guide block 53 to move synchronously, and the guide block 53 drives the guide column 54 to slide along the guide groove 55. Thus, under the action of the horizontally moving sliding plate 51, the sliding air connector 43 in the blow molding machine assembly 4 slides vertically. When the sliding air connector 43 moves to the lower limit position, its bottom end connects and engages with the blow molding mechanism 3, thereby allowing gas to be supplied to the blow molding mechanism 3 through the blow molding machine assembly 4. The blow molding mechanism 3 can then perform blow molding on the plastic preform on the placement table 12. To switch between different blow molding mechanisms 3, simply rotate the turntable 23. During switching, under the elastic restoring force of the second spring 52, the sliding plate 51 moves in the opposite direction, causing the blow molding machine assembly 4 to automatically disengage from the blow molding mechanism 3. After the next blow molding mechanism 3 moves to the working position, the blow molding machine assembly 4 will automatically connect with that blow molding mechanism 3.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A plastic blow molding machine with an easy-to-change blow molding head, comprising a worktable, characterized in that, The workbench is equipped with a mounting bracket and a placement platform. A blow molding machine assembly is mounted on top of the mounting bracket. The assembly also includes: The mounting mechanism includes a mounting plate mounted below a mounting bracket. A turntable is located at the bottom of the mounting plate, and a motor for rotating the turntable is also mounted on the mounting plate. A plurality of mounting sleeves are arranged in a ring on the turntable. A telescopic rod is slidably mounted within each mounting sleeve. A blow molding mechanism for blow molding is detachably mounted at the end of the telescopic rod away from the mounting sleeve. A sliding rod is mounted on the side wall of the telescopic rod, and a sliding groove matching the sliding rod is provided on the mounting plate. The sliding groove includes a semi-circular arc segment and a semi-elliptical arc segment. A connecting assembly includes a sliding plate slidably mounted on a mounting plate, a second spring connecting the sliding plate and the mounting plate, and the sliding plate abutting against a sliding rod. An upwardly inclined guide block is mounted on the sliding plate. A guide post is provided on the blow molding machine assembly, and a guide groove matching the guide post is provided on the guide block. The blow molding machine assembly includes a blow molding machine body mounted on a mounting bracket. A fixed air guide pipe is provided below the blow molding machine body. A sliding air guide joint is slidably installed in the fixed air guide pipe, and a guide post is installed at the bottom of the sliding air guide joint. A first spring is also connected between the sliding air guide joint and the fixed air guide pipe.

2. The plastic blow molding machine with an easily replaceable blow molding head according to claim 1, characterized in that, The blow molding mechanism includes a fixed plate with a plurality of blow molding heads on the fixed plate. An air inlet connector is provided on the top of the fixed plate. The air inlet connector is used to connect with a sliding air guide connector and is also connected to each blow molding head on the fixed plate.

3. The plastic blow molding machine with an easily replaceable blow molding head according to claim 1, characterized in that, A sealing gasket is provided at the bottom of the sliding air guide joint.

4. The plastic blow molding machine with an easily replaceable blow molding head according to claim 3, characterized in that, The sealing gasket is made of rubber.

5. The plastic blow molding machine with an easily replaceable blow molding head according to claim 1, characterized in that, The installation sleeve is provided in four parts.

6. The plastic blow molding machine with an easily replaceable blow molding head according to claim 5, characterized in that, There are four blow molding mechanisms, and each blow molding mechanism has different specifications.

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