Gas transmission device for injection molding machine capable of preventing pipeline winding

Abstract

The utility model provides a gas transmission device for an injection molding machine capable of preventing a pipeline from winding, which comprises a base and a turntable, a central tower for arranging the turntable is arranged in the center of the base, the turntable rotates by taking the central tower as an axis, a gas transmission mechanism is arranged on the base, and a gas supply groove corresponding to the gas transmission mechanism is arranged on the turntable; the air conveying mechanism comprises an air cylinder and an air conveying pipeline, a through hole is formed in the base, a cylinder body of the air cylinder is arranged on the portion, below the through hole, of the base, a piston rod of the air cylinder penetrates through the through hole to extend to the position above the base, and the air conveying pipeline penetrating through the upper end and the lower end of the piston rod is arranged on the piston rod of the air cylinder. The air delivery port is connected with a mold arranged on the turntable through a pipeline and delivers air to the mold through the air delivery port, the air cylinder drives the piston rod to move upwards to enable the upper end of the air delivery pipeline to extend into the air delivery groove to be attached and communicated with the air delivery port, and the lower end of the air delivery pipeline is communicated with external air delivery equipment; the structure can prevent the gas pipeline from being wound.

Description

Technical Field

[0001] The utility model relates to the technical field of turntable injection molding machines, in particular to an air delivery device for injection molding machines which can prevent pipeline winding. Background Art

[0002] Rotary table injection molding machines are primarily used for injection molding with two or more lower molds. Depending on the number of lower molds installed on the turntable, the turntable rotates by a corresponding angle to change the position of the lower molds. For example, if two lower molds are installed on the turntable, the turntable rotates 180 degrees; if three lower molds are installed, the turntable rotates 120 degrees, and so on. In existing injection molding processes, since the lower molds rotate with the turntable, they preheat or cool the bottom of the mold during preheating and rapid cooling. This requires heat conduction from the mold to heat or cool the mold cavity, which takes a long time and is inefficient.

[0003] A Chinese patent application with the number 202121451987.0 and the publication date of March 1, 2022, discloses a high-efficiency injection molding machine for multi-layer injection-molded shoe soles. The invention relates to the technical field of injection molding devices, and more particularly to a high-efficiency injection molding machine for multi-layer injection-molded shoe soles. A high-efficiency injection molding machine for multi-layer injection-molded shoe soles with high injection molding efficiency is proposed. The invention comprises a turntable and a mold, which drives the mold to rotate between workstations. The turntable is provided with an air inlet connected to the mold, which is fixed to the turntable and rotates with the turntable. A hot air source and a cold air source are provided at the workstations. When the turntable drives the mold to rotate to a workstation, the hot air source or the cold air source is connected to the mold through the air inlet. The first mold is connected to the cold air source through the air inlet, and air is inflated into the cavity. Since the cavity is closed, the cold air can be enclosed in the cavity after inflation to continuously cool the mold, thereby saving energy, accelerating the mold cooling rate, and improving injection molding efficiency.

[0004] The document sets an air inlet at the bottom of the base, which is connected to an external air supply device through a hose. Although the hose can avoid some of the impact by relying on its own deformation during the rotation of the turntable, if the turntable continues to rotate in the same direction, the hose will be entangled on the rotating device at the bottom, causing an accident. Summary of the Invention

[0005] The purpose of the utility model is to provide a gas supply device for an injection molding machine that prevents pipeline entanglement. Through this device, the gas supply pipeline and the mold are separated and connected when gas supply is required, so that the gas supply pipeline will not affect the rotation of the turntable.

[0006] To achieve the above-mentioned purpose, an air delivery device for an injection molding machine that prevents pipe entanglement is provided, comprising a base and a turntable, the turntable being arranged above the base and rotating around the center of the base, an air delivery mechanism being provided on the base, and an air delivery groove corresponding to the air delivery mechanism being provided on the turntable; the air delivery mechanism comprising a cylinder and an air delivery pipeline, a through hole being provided on the base, a cylinder body of the cylinder being arranged on the base below the through hole, a piston rod of the cylinder extending to above the base through the through hole, an air delivery pipeline passing through the upper and lower ends of the piston rod being provided on the piston rod of the cylinder, an air delivery port being provided on the air delivery groove, the air delivery port being connected to a mold arranged on the turntable, and the cylinder driving the piston rod to move upward to extend the upper end of the air delivery pipeline into the air delivery groove to fit and connect with the air delivery port.

[0007] The above structure is configured with an air supply groove on the turntable and an air cylinder on the base. When air needs to be supplied to the mold, the turntable rotates the air supply groove to a position corresponding to the cylinder, and then the cylinder drives the piston rod to move upward into the air supply groove, thereby connecting the air supply pipeline with the air supply port, thereby outputting gas into the mold. When the turntable needs to rotate, the cylinder drives the piston rod to move downward to disengage from the air supply groove, so that the piston rod of the cylinder avoids the turntable, thereby ensuring that the piston rod does not interfere with the rotation of the turntable and preventing the air supply pipeline from being entangled.

[0008] Furthermore, the gas delivery port is connected to the mold arranged on the turntable through a pipeline and gas is delivered to the mold through the gas delivery port, and the lower end of the gas delivery pipeline is connected to an external gas supply device.

[0009] In the above arrangement, the gas delivery port is connected to the mold on the turntable through the pipeline on the turntable and delivers gas, and the lower end of the gas delivery pipeline is connected to the gas delivery equipment to ensure the reliability of gas delivery.

[0010] Furthermore, a central tower for arranging a turntable is provided at the center of the base, and the turntable rotates with the central tower as the axis.

[0011] The above arrangement, through the arrangement of the central tower, can enable the turntable to rotate more reliably around the central tower.

[0012] Furthermore, the cylinder body of the cylinder is mounted on the base through a fixing assembly, and the fixing assembly includes a fixing plate, a connecting plate and fixing bolts. The fixing plate is arranged at the bottom end of the base, and a connecting plate is provided on the cylinder body of the cylinder. The connecting plate is fixedly mounted on the fixing plate through fixing bolts, and the piston rod of the cylinder passes through the fixing plate and the through hole and extends to the top of the base.

[0013] The above arrangement, by providing a fixing assembly, makes it easy to disassemble and install the cylinder, thereby facilitating maintenance.

[0014] Furthermore, a connecting groove is provided below the air supply groove, and the connecting groove is arranged corresponding to the piston rod of the cylinder. A gas delivery port that passes through the air supply groove is provided at the center of the connecting groove. The cylinder drives the piston rod to be inserted into the connecting groove to align the gas pipeline with the gas delivery port.

[0015] The above arrangement, by providing the connecting groove, facilitates the piston rod of the cylinder to be inserted into the air delivery groove to achieve air delivery.

[0016] Furthermore, a guide surface is provided on the inner wall of the lower end of the connecting groove and extends upward and inward from the lower end of the connecting groove.

[0017] The above arrangement facilitates the piston rod of the cylinder to extend into the connecting groove by providing the guide surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the gas delivery device of the present utility model.

[0019] Figure 2 This is a schematic diagram of the connection between the turntable and the base of the utility model.

[0020] Figure 3 for Figure 1 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods.

[0022] like Figures 1 to 3 As shown, a gas delivery device for an injection molding machine to prevent pipe entanglement includes a base 1 and a turntable 2. A central tower 11 for setting the turntable 2 is provided at the center of the base 1. The turntable 2 rotates with the central tower 11 as the axis (as shown in FIG. Figure 2As shown in FIG, the lower end of the central tower 11 is fixed to the base 1, and a rotary drive motor (not shown in the figure) is provided at the upper end of the central tower 11. The rotary drive motor drives the turntable 2 to rotate around the central tower 11. A gas transmission mechanism 3 is provided on the base 1, and a gas delivery groove 21 corresponding to the gas transmission mechanism 3 is provided on the turntable 2. The gas transmission mechanism 3 includes a cylinder 31 and a gas transmission pipeline 32. A through hole 12 is provided on the base 1. The cylinder body 311 of the cylinder 31 is provided on the base 1 below the through hole 12. The piston rod 312 of the cylinder 31 passes through the through hole 12 and extends to the top of the base 1. An air delivery pipe 32 is provided on the piston rod 312 of the cylinder 31, which passes through the upper and lower ends of the piston rod 312. An air delivery port 22 is provided on the air delivery groove 21. The air delivery port 22 is connected to the mold set on the turntable through a pipe and delivers gas to the mold through the air delivery port (not shown in the figure). The pipe is a through hole set on the turntable. The cylinder 31 drives the piston rod 312 to move upward to extend the upper end of the air delivery pipe 32 into the air delivery groove 21 and connect it to the air delivery port 22. The lower end of the air delivery pipe 32 is connected to an external air delivery device (not shown in the figure). The external air delivery device is an existing fan to form an air delivery device.

[0023] The cylinder body 311 of the cylinder 31 is mounted on the base 1 via a fixing assembly comprising a fixing plate 41, a connecting plate 42, and fixing bolts 43. The fixing plate 41 is disposed at the bottom end of the base 1. The connecting plate 42 is provided on the cylinder body 311 of the cylinder 31. The connecting plate 42 is fixed to the fixing plate 41 via fixing bolts 43. The piston rod 312 of the cylinder 31 extends through the fixing plate 41 and the through hole 12 to the top of the base 1. The provision of the fixing assembly facilitates disassembly and installation of the cylinder 31, thereby facilitating maintenance.

[0024] A connecting groove 23 is provided below the air delivery groove 21. The connecting groove 23 is arranged corresponding to the piston rod 312 of the cylinder 31. A gas delivery port 22 is provided at the center of the connecting groove 23 and extends through the air delivery groove 21. The cylinder 31 drives the piston rod 312 to insert into the connecting groove 23 and align the gas delivery pipe 32 with the gas delivery port 22. The provision of the connecting groove 23 facilitates the insertion of the piston rod 312 of the cylinder 31 into the air delivery groove 21, thereby achieving air delivery.

[0025] like Figure 3 As shown, a guide surface 231 is provided on the inner wall of the lower end of the connecting groove 23, which extends upward and inwardly from the lower end of the connecting groove 23. By providing the guide surface 231, the piston rod 312 of the cylinder 31 is facilitated to extend into the connecting groove.

[0026] The beneficial effects of the present invention are as follows: by arranging an air supply groove 21 on the turntable 2 and arranging an air cylinder 31 on the base 1, when air needs to be supplied to the mold, the turntable 2 rotates the air supply groove 21 to a position corresponding to the cylinder 31, and then the cylinder 31 drives the piston rod 312 to move upward into the air supply groove 21, thereby connecting the air supply pipeline 32 with the air supply port 22, thereby outputting gas into the mold; when the turntable 2 needs to be rotated, the cylinder 31 drives the piston rod 312 to move downward out of the air supply groove 21, thereby making the piston rod 312 of the cylinder 31 avoid the turntable 2, thereby ensuring that the piston rod 312 will not interfere with the rotation of the turntable 2, and preventing the air supply pipeline from being entangled.

Claims

1. A gas delivery device for an injection molding machine to prevent pipe entanglement, comprising a base and a turntable, wherein the turntable is arranged above the base and rotates around the center of the base, and is characterized in that: An air delivery mechanism is provided on the base, and an air delivery groove corresponding to the air delivery mechanism is provided on the turntable; the air delivery mechanism includes a cylinder and an air delivery pipeline, a through hole is provided on the base, the cylinder body of the cylinder is provided on the base below the through hole, the piston rod of the cylinder extends to the top of the base through the through hole, an air delivery pipeline passing through the upper and lower ends of the piston rod is provided on the piston rod of the cylinder, and an air delivery port is provided on the air delivery groove, and the air delivery port is connected with the mold provided on the turntable, and the cylinder drives the piston rod to move upward to extend the upper end of the air delivery pipeline into the air delivery groove to fit and connect with the air delivery port.

2. The air delivery device for an injection molding machine for preventing pipe entanglement according to claim 1, characterized in that: The gas delivery port is connected to the mold arranged on the turntable through a pipeline and gas is delivered to the mold through the gas delivery port. The lower end of the gas delivery pipeline is connected to an external gas supply device.

3. The air delivery device for an injection molding machine for preventing pipe entanglement according to claim 1, characterized in that: A central tower for arranging a turntable is provided at the center of the base, and the turntable rotates with the central tower as the axis.

4. The air delivery device for an injection molding machine for preventing pipe entanglement according to claim 1, characterized in that: The cylinder body of the cylinder is installed on the base through a fixing assembly, and the fixing assembly includes a fixing plate, a connecting plate and fixing bolts. The fixing plate is arranged at the bottom end of the base, and a connecting plate is provided on the cylinder body of the cylinder. The connecting plate is fixedly mounted on the fixing plate through fixing bolts. The piston rod of the cylinder passes through the fixing plate and the through hole and extends to the top of the base.

5. The air delivery device for an injection molding machine for preventing pipe entanglement according to claim 1, characterized in that: A connecting groove is provided below the air supply groove, and the connecting groove is arranged corresponding to the piston rod of the cylinder. A gas delivery port that passes through the air supply groove is provided at the center of the connecting groove. The cylinder drives the piston rod to be inserted into the connecting groove to align the gas delivery pipeline with the gas delivery port.

6. The air delivery device for an injection molding machine for preventing pipe entanglement according to claim 5, characterized in that: A guide surface is provided on the inner wall of the lower end of the connecting groove and extends upward and inward from the lower end of the connecting groove.

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