A material stretching driving device for a blow molding machine

Abstract

The utility model discloses a kind of material stretching driving devices for blow molding machine, including mounting plate and the slide rail installed thereon, first drive component, second drive component, blow insertion pen and auxiliary rod, the first drive component includes first servo motor and first screw rod, the first screw rod is controlled by the first servo motor and transmission connection the blow insertion pen;The second drive component includes second servo motor and second screw rod, the second screw rod is controlled by the second servo motor and transmission connection the auxiliary rod;The first screw rod, second screw rod and slide rail are arranged side by side, so that the blow insertion pen and auxiliary rod controllably along the slide rail slide and mutually close or away from each other.The utility model can flexibly adjust the different speed, different amplitude, different starting point of insertion pen and auxiliary rod by servo motor setting distance and the like parameters.

Description

Technical Field

[0001] This utility model relates to the field of blow molding machine technology, specifically to a sheeting drive device for blow molding machines. Background Technology

[0002] Blow molding machines are commonly used to produce various hollow plastic products. Thermoplastic resin is first made into a tubular preform, which is then placed in a split blow molding mold and the mold is closed. Air is then blown into the preform, causing it to inflate and adhere tightly to the inner wall of the mold cavity. After cooling, the hollow plastic product is obtained.

[0003] For barrel-shaped products with side openings, the plastic stretching process needs to be completed before blow molding. Specifically, during the blowing process, the blowing pen and the auxiliary rod move in opposite directions to open the barrel, making the blowing system relatively complex. Existing technology uses cylinders or hydraulic cylinders to drive the movement of the pen and auxiliary rod, which lacks operability and controllability. If the opening profile is changed, manual adjustment is required, the stroke is fixed, and only synchronous movements are possible. Utility Model Content

[0004] To address the technical problems existing in the prior art, the purpose of this utility model is to provide a material driving device for a blow molding machine, which can flexibly adjust the different speeds, amplitudes, and starting points of the insert and auxiliary rod by setting parameters such as distance through a servo motor.

[0005] The objective of this utility model is achieved through the following technical solution: a sheeting drive device for a blow molding machine, comprising a mounting plate and a slide rail mounted thereon, a first drive assembly, a second drive assembly, an air-blowing pen, and an auxiliary rod. The first drive assembly includes a first servo motor and a first lead screw, the first lead screw being controlled by the first servo motor and drivingly connected to the air-blowing pen. The second drive assembly includes a second servo motor and a second lead screw, the second lead screw being controlled by the second servo motor and drivingly connected to the auxiliary rod. The first lead screw, the second lead screw, and the slide rail are arranged side by side, so that the air-blowing pen and the auxiliary rod can be adjusted to slide along the slide rail and move closer or further apart from each other.

[0006] Furthermore, the bottom of the air-blowing pen is provided with a first mounting base, and the air-blowing pen is vertically mounted on the first mounting base; the first mounting base is mounted on a slide rail, and the bottom of the first mounting base is provided with a first transmission component, which is connected to a first lead screw, thereby driving the air-blowing pen to slide along the slide rail.

[0007] Furthermore, the bottom of the auxiliary rod is provided with a second mounting base, and the auxiliary rod is vertically mounted on the second mounting base; the second mounting base is mounted on the slide rail, and the bottom of the second mounting base is provided with a second transmission component, which is connected to a second lead screw, thereby driving the auxiliary rod to slide along the slide rail.

[0008] Specifically, the first transmission component and the second transmission component have the same structure, both being bushings, which are matched with connecting screws. The rotation of the screws drives the first mounting seat or the second mounting seat to slide along the slide rail.

[0009] Specifically, the air-blowing pen includes a central shaft, a rotating base, and a rotating threaded head. The central shaft is vertically mounted on a first mounting base, the rotating base is connected to the central shaft via a bearing sleeve, and the rotating threaded head is mounted on the rotating base.

[0010] Preferably, the rotating threaded head has a detachable structure.

[0011] Furthermore, it also includes a transmission assembly, which includes a third servo motor, a synchronous pulley, and a synchronous belt. The synchronous belt meshes with the rotating seat and the synchronous pulley respectively. The third servo motor drives the synchronous pulley to rotate, thereby driving the rotating seat to rotate through the synchronous belt, so that the rotating thread head rotates to demold.

[0012] Specifically, the first servo motor and the second servo motor are mounted on the mounting plate, with the first servo motor connected to one end of the first lead screw and the second servo motor connected to one end of the second lead screw.

[0013] Specifically, the slide rail consists of two slide bars, which are mounted on the mounting plate, and the first lead screw and the second lead screw are arranged in parallel between the two slide bars.

[0014] Furthermore, it also includes a controller connected to the first servo motor and the second servo motor to adjust the operating parameters of the first servo motor and the second servo motor respectively.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] 1. This utility model sets parameters such as distance using a servo motor, eliminating the need for manual adjustment of the opening amplitude. It allows for the design of the pen insert and auxiliary rod's motion, enabling flexible adjustment of different speeds, amplitudes, and starting points for the pen insert and auxiliary rod.

[0017] 2. The dual servo motor operation of this utility model allows each motor to control a corresponding pen or auxiliary rod via a lead screw, enabling independent control and flexible adjustment.

[0018] 3. This utility model has a more accurate cycle, avoiding the situation where the stroke cycle of the hydraulic cylinder is uncontrollable, including the problem that if the strokes of the two stations are not equal, it is easy to cause one product to be heavier and the other to be lighter. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the structure of this utility model, and the air-blowing pen and auxiliary rod are not spread out.

[0020] Figure 2 This is a schematic diagram of the structure of the present invention, in which the air-blowing pen and the auxiliary rod are spread apart.

[0021] Figure 3 This is a structural schematic diagram of the disassembly of the air-blowing pen and part of the first mounting base of this utility model.

[0022] Figure 4 This is a schematic diagram of the transmission component and the air-blowing pen of this utility model.

[0023] In the picture:

[0024] 10-Mounting plate, 20-Slide rail, 30-First drive assembly, 31-First servo motor, 32-First lead screw, 40-Second drive assembly, 41-Second servo motor, 42-Second lead screw, 50-Blow pen inserter, 57-Central shaft, 58-Rotating seat, 60-Auxiliary rod, 72-Third servo motor, 74-Synchronous pulley, 76-Synchronous belt, 80-First mounting seat, 85-First slider, 87-First transmission component, 90-Second mounting seat, 95-Second slider, 97-Second transmission component. Detailed Implementation

[0025] To facilitate understanding of this utility model, the technical solutions and advantages of the utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Any mechanisms or methods not elaborated in this utility model can be referred to in the prior art. The specific structures and features of this utility model are illustrated below by way of example and should not constitute any limitation on this utility model. Furthermore, any technical feature mentioned below (including implicit or disclosed features), as well as any technical feature directly shown or implied in the figures, can be arbitrarily combined or deleted among these technical features to form more other embodiments that may not be directly or indirectly mentioned in this utility model. The accompanying drawings show preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0026] like Figure 1-4As shown, the sheet material driving device for the blow molding machine in this embodiment includes a mounting plate 10, a slide rail 20, a first driving assembly 30, a second driving assembly 40, an air blowing pen 50, an auxiliary rod 60, a controller, and a transmission assembly. The slide rail 20, the first driving assembly 30, the second driving assembly 40, the air blowing pen 50, and the auxiliary rod 60 are mounted on the mounting plate 10. The controller is connected to the first driving assembly 30 and the second driving assembly 40, and the transmission assembly is connected to the air blowing pen 50.

[0027] Specifically, the mounting plate 10 is a horizontally placed plate surface. The slide rail 20 includes two slide bars, which are arranged parallel to each other on the mounting plate 10.

[0028] The first drive assembly 30 includes a first servo motor 31 and a first lead screw 32, and the second drive assembly 40 includes a second servo motor 41 and a second lead screw 42. The first servo motor 31 and the second servo motor 41 are mounted on the mounting plate 10. A controller is connected to the first servo motor 31 and the second servo motor 41 to adjust their respective operating parameters. The first servo motor 31 is connected to one end of the first lead screw 32, driving the first lead screw 32 to rotate. The first lead screw 32, controlled by the first servo motor 31, is connected to the air-blowing pen 50. The second servo motor 41 is connected to one end of the second lead screw 42, driving the second lead screw 42 to rotate. The second lead screw 42, controlled by the second servo motor 41, is connected to the auxiliary rod 60. The first lead screw 32 and the second lead screw 42 are arranged parallel to each other between two sliders.

[0029] The air-blowing pen 50 has a first mounting base 80 at its bottom, and the air-blowing pen 50 is vertically mounted on the first mounting base 80. The first mounting base 80 is block-shaped, and its bottom has two first sliders 85. The first mounting base 80 is mounted on the slide rail 20, and the two first sliders 85 are correspondingly connected to two slide bars. The first mounting base 80 also includes a first transmission component 87, which is a bushing that is fitted and connected to a first lead screw 32. The rotation of the first lead screw 32 drives the first mounting base 80 and the air-blowing pen 50 to slide along the slide rail 20.

[0030] The auxiliary rod 60 has a second mounting base 90 at its bottom, and the auxiliary rod 60 is vertically mounted on the second mounting base 90. The second mounting base 90 is block-shaped, and its bottom has two second sliders 95. The second mounting base 90 is mounted on the slide rail 20, and the two second sliders 95 are correspondingly connected to two slide bars. The second mounting base 90 also includes a second transmission component 97, which is a bushing that is fitted and connected to a second lead screw 42. By rotating the second lead screw 42, the second mounting base 90 and the auxiliary rod 60 are driven to slide along the slide rail 20. The arrangement of the first mounting base 80 and the second mounting base 90 allows the air-blowing pen 50 and the auxiliary rod 60 to slide along the slide rail 20 and move closer or further apart.

[0031] The air-blowing pen 50 includes a central shaft 57, a rotating seat 58, and a rotating threaded head. The central shaft 57 is vertically mounted on the first mounting base 80. The rotating seat 58 is connected to the central shaft 57 via a bearing sleeve. The rotating threaded head is detachably mounted on the rotating seat 58. The transmission assembly drives the rotating seat 58 to rotate, thereby driving the rotating threaded head to rotate for demolding.

[0032] The transmission assembly is mounted on the first mounting base. The transmission assembly includes a third servo motor 72, a synchronous pulley 74, and a synchronous belt 76. The synchronous belt 76 is engaged with the rotating seat 58 and the synchronous pulley 74 respectively. The third servo motor 72 is connected to the synchronous pulley 74. The synchronous pulley 74 is driven to rotate by the third servo motor 72, which causes the synchronous belt 76 to drive the rotating seat 58 to rotate, thereby driving the rotating thread head to rotate for demolding.

[0033] In this embodiment, the controller controls the first servo motor 31 and the second servo motor 41 to move the air-blowing pen 50 and the auxiliary rod 60 away from each other, thereby achieving the plastic stretching operation. Since the motors are controlled one-to-one, the movements of the air-blowing pen 50 and the auxiliary rod 60 are independent of each other. That is, the air-blowing pen 50 may not move, but the auxiliary rod 60 may move alone; or the air-blowing pen 50 may move alone, while the auxiliary rod 60 may not move; or both the air-blowing pen 50 and the auxiliary rod 60 may move, but the timing and stroke of the movement may differ.

[0034] For the air-blowing pen 50 with a rotating threaded head, when air blowing is complete and demolding is required, the transmission assembly drives the rotating seat 58 to rotate, thereby causing the rotating threaded head to rotate for demolding. The rotating threaded head is detachable and replaceable, convenient for accommodating products of different specifications. The control and setting accuracy of the transmission assembly in this embodiment is something that existing drive mechanisms such as hydraulic motors cannot achieve.

[0035] The above embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of protection of the present utility model. For those skilled in the art, it will be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A sheeting drive device for a blow molding machine, characterized in that, The device includes a mounting plate and a slide rail mounted thereon, a first drive assembly, a second drive assembly, an air-blowing pen, and an auxiliary rod. The first drive assembly includes a first servo motor and a first lead screw, with the first lead screw controlled by the first servo motor and connected to the air-blowing pen. The second drive assembly includes a second servo motor and a second lead screw, with the second lead screw controlled by the second servo motor and connected to the auxiliary rod. The first lead screw, the second lead screw, and the slide rail are arranged side by side, allowing the air-blowing pen and the auxiliary rod to slide along the slide rail in an adjustable manner, moving closer to or further apart from each other.

2. The sheet drive device for a blow molding machine as described in claim 1, characterized in that, The bottom of the air-blowing pen is provided with a first mounting base, and the air-blowing pen is vertically mounted on the first mounting base; the first mounting base is mounted on a slide rail, and the bottom of the first mounting base is provided with a first transmission component, which is connected to a first lead screw, thereby driving the air-blowing pen to slide along the slide rail.

3. The sheet drive device for a blow molding machine as described in claim 2, characterized in that, The auxiliary rod is provided with a second mounting base at its bottom, and the auxiliary rod is vertically mounted on the second mounting base; the second mounting base is mounted on a slide rail, and the bottom of the second mounting base is provided with a second transmission component, which is connected to a second lead screw, thereby driving the auxiliary rod to slide along the slide rail.

4. The sheeting drive device for a blow molding machine as described in claim 3, characterized in that, The first transmission component and the second transmission component have the same structure, both being bushings, which are matched with connecting screws. The rotation of the screws drives the first mounting seat or the second mounting seat to slide along the slide rail.

5. The sheeting drive device for a blow molding machine as described in claim 2, characterized in that, The air-blowing pen includes a central shaft, a rotating base, and a rotating threaded head. The central shaft is vertically mounted on a first mounting base. The rotating base is connected to the central shaft via a bearing sleeve. The rotating threaded head is mounted on the rotating base.

6. The sheeting drive device for a blow molding machine as described in claim 5, characterized in that, The rotating threaded head is a detachable structure.

7. The sheeting drive device for a blow molding machine as described in claim 5, characterized in that, It also includes a transmission assembly, which includes a third servo motor, a synchronous pulley, and a synchronous belt. The synchronous belt meshes with the rotating seat and the synchronous pulley respectively. The third servo motor drives the synchronous pulley to rotate, thereby driving the rotating seat to rotate through the synchronous belt, so that the rotating thread head rotates to demold.

8. The sheet drive device for a blow molding machine as described in claim 1, characterized in that, The first servo motor and the second servo motor are mounted on the mounting plate. The first servo motor is connected to one end of the first lead screw, and the second servo motor is connected to one end of the second lead screw.

9. The sheeting drive device for a blow molding machine as described in claim 1, characterized in that, The slide rail consists of two slide bars, which are mounted on the mounting plate. The first lead screw and the second lead screw are arranged in parallel between the two slide bars.

10. The sheet drive device for a blow molding machine as described in claim 1, characterized in that, It also includes a controller, which is connected to the first servo motor and the second servo motor to adjust the operating parameters of the first servo motor and the second servo motor respectively.

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