Moving mold closing seam forming device for blowing mold

Abstract

The utility model discloses a movable mold closing seam forming device used on a blow molding mold. The movable mold closing seam forming device comprises a lining used for being installed on the mold, a mold closing seam insert installed on the lining in a sliding mode, an extrusion device installed on the lining and used for extruding plastic, and a loading rod. A through hole is formed in the extrusion device, the mold closing seam insert can open or close the through hole, and the loading rod extends into the mold through the through hole. When the mold closing seam insert slides backwards, the through hole is in an open state; and when the mold closing seam insert slides forwards, the mold closing seam insert is in an open state. Before the loading rod enters the mold through the through hole, the mold closing seam insert slides backwards, so that the through hole is in an open state, and an avoiding space is provided for the loading rod to enter the mold. When the loading rod retreats from the through hole, the mold closing seam insert slides forwards to close the through hole, so that the mold closing seam of the oil tank is formed, a better sealing state is provided for forming of the oil tank, and the purpose of pre-separation of the oil tank and the flash is achieved.

Description

Technical Field

[0001] The utility model relates to a mold clamping seam forming device, in particular to a moving mold clamping seam forming device for a blow molding mold. Background Art

[0002] When producing an automobile fuel tank, it is necessary to place plastic parts inside the fuel tank to reduce the noise generated during driving. The current method is to keep the mold in an incompletely closed state before the plastic parts are loaded in place; this method has the problems of long waiting time, increased molding time, and uneven and uncontrollable stretching of the blank before molding, which is prone to quality risks. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a moving mold clamping seam forming device for a blow molding mold with simple structure, high production efficiency and low processing cost in view of the above problems. When placing the built-in plastic parts, the device can avoid the loading device, reduce the mold clamping waiting time, and can reduce the stretching of the blank and make the stretching controllable before the fuel tank is molded, thus reducing the quality risk.

[0004] The purpose of the utility model can be achieved by the following technical solutions:

[0005] A moving mold clamping seam forming device for a blow molding mold includes a bushing for mounting on the mold, a mold clamping seam insert slidably mounted on the bushing, an extrusion device mounted on the bushing for extruding plastic, and a loading rod; a through hole is formed in the extrusion device, the mold clamping seam insert can open or close the through hole, and the loading rod extends into the mold through the through hole.

[0006] As a preferred solution, when the loading rod extends into the through hole, the mold clamping seam insert opens the through hole; when the loading rod withdraws from the through hole, the mold clamping seam insert closes the through hole.

[0007] As a preferred solution, the mold clamping seam insert is connected to the power output end of the driving device.

[0008] As a preferred solution, when the loading rod extends into the through hole, the driving device drives the mold clamping seam insert to open the through hole; when the loading rod withdraws from the through hole, the driving device drives the mold clamping seam insert to close the through hole.

[0009] As a preferred solution, when the mold clamping seam insert closes the through hole, the mold clamping seam insert is hermetically connected to the through hole.

[0010] As a preferred solution, the driving device is a motor or a hydraulic cylinder.

[0011] Implementing the utility model has the following beneficial effects:

[0012] When the mold clamping joint insert slides backward, the through hole is in an open state; when the mold clamping joint insert slides forward, the through hole is also in an open state. Before the loading rod enters the mold through the through hole, the mold clamping joint insert slides backward to keep the through hole open, providing a clearance space for the loading rod to enter the mold. When the loading rod exits the through hole, the mold clamping joint insert slides forward to close the through hole, forming the mold clamping joint of the fuel tank, providing a better airtight state for the fuel tank forming, and achieving the purpose of pre-separating the fuel tank from the flash. The utility model realizes the purpose and function of putting the plastic part into the mold by the rising and falling of the loading rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0014] Figure 1 is a schematic structural diagram of the moving mold clamping joint forming device of the present utility model on a blow molding mold.

[0015] Figure 2 is an exploded view of the moving mold clamping joint forming device of the present utility model installed on a mold.

[0016] Figure 3 is a schematic structural diagram of the moving mold clamping joint forming device of the present utility model installed on a mold. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0018] Embodiment

[0019] Referring to Figures 1 to 3 , this embodiment relates to a moving mold clamping joint forming device for a blow molding mold, including a bushing 1 for installation on a mold 10, a mold clamping joint insert 2 slidably installed on the bushing 1, an extrusion device 3 installed on the bushing 1 and used for extruding plastic, and a loading rod 4; a through hole 31 is formed on the extrusion device 3, the mold clamping joint insert 2 can open or close the through hole 31, and the loading rod 4 extends into the mold 10 through the through hole 31.

[0020] During installation, the bushing 1 is installed on the mold 10; the parting line insert 2 is slidably installed on the bushing 1, that is, the bushing 1 plays a role in supporting and guiding the movement of the parting line insert 2, ensuring the stability of the sliding of the parting line insert 2. When the parting line insert 2 slides backward, the through hole 31 is in an open state; when the parting line insert 2 slides forward, the through hole is in an open state. Before the loading rod 4 enters the mold 10 through the through hole 31, the parting line insert 2 slides backward to make the through hole 31 in an open state, providing an avoidance space for the loading rod 4 to enter the mold 10. When the loading rod 4 exits the through hole 31, the parting line insert 2 slides forward to close the through hole 31, forming the fuel tank parting line, providing a better sealing state for the fuel tank forming, and achieving the purpose of pre-separating the fuel tank and the flash. This device realizes the purpose and function of putting the plastic part into the mold 10 through the rising and falling of the loading rod 4.

[0021] This device adopts a structure in which the extrusion device 3 and the loading rod 4 cooperate, and has the following advantages: 1. It can better ensure the stability of the position of the loading rod 4; 2. It realizes the extrusion of the plastic in the extrusion device 3, so that the forming of the parting line of the parting line insert 2 of the fuel tank is consistent with the forming of the parting lines in other areas of the fuel tank.

[0022] When the loading rod 4 extends into the through hole 31, the parting line insert 2 opens the through hole 31; when the loading rod 4 exits the through hole 31, the parting line insert 2 closes the through hole 31. The parting line insert 2 is connected to the power output end of the driving device 5. When the loading rod 4 extends into the through hole 31, the driving device drives the parting line insert 2 to open the through hole 31; when the loading rod 4 exits the through hole 31, the driving device drives the parting line insert 2 to close the through hole 31. When the parting line insert 2 closes the through hole 31, the parting line insert 2 is hermetically connected to the through hole 31. The driving device is a motor or a hydraulic cylinder.

[0023] The working principle and process of this device are as follows:

[0024] In the first step, when the blow molding mold 10 is opened, the parting line insert 2 is driven to slide backward to open the through hole 31, then the loading rod 4 rises and extends into the blow molding mold 10 through the through hole 31, and then the mold 10 is closed, and at the same time the extrusion device 3 ensures the correct extrusion of the preform;

[0025] In the second step, after the extrusion structure, the loading rod 4 descends and exits the through hole 31, and then the driving device drives the parting line insert 2 to slide forward to form the fuel tank parting line.

[0026] In the third step, the blow molding mold 10 is opened, the driving device drives the parting line insert 2 to slide backward to open the through hole 31, and then enters the next cycle of work.

[0027] The above-disclosed is only a preferred embodiment of the present utility model, and of course, it cannot be used to limit the scope of rights of the present utility model. Therefore, equivalent changes made according to the claims of the present utility model still fall within the scope covered by the present utility model.

Claims

1. A moving mold joint forming device for a blow molding mold, characterized in that It includes a bushing for installation on a mold, a parting line insert slidably installed on the bushing, an extrusion device installed on the bushing and used for extruding plastics, and a loading rod; a through hole is formed in the extrusion device, the parting line insert can open or close the through hole, and the loading rod extends into the mold through the through hole.

2. The moving mold clamping seam forming device for a blow molding mold according to claim 1, wherein When the loading rod extends into the through hole, the parting line insert opens the through hole; when the loading rod withdraws from the through hole, the parting line insert closes the through hole.

3. The motion combined mold seam forming device for a blow molding mold according to claim 1, wherein The parting line insert is connected to the power output end of the driving device.

4. A moving mold joint forming device for a blow molding mold according to claim 3, characterized in that, When the loading rod extends into the through hole, the driving device drives the parting line insert to open the through hole; when the loading rod withdraws from the through hole, the driving device drives the parting line insert to close the through hole.

5. A moving mold clamping seam forming device for a blow molding mold according to any one of claims 1 to 4, characterized in that, When the parting line insert closes the through hole, the parting line insert is hermetically connected to the through hole.

6. The movement combined mold seam forming device for a blow molding die according to claim 3 or 4, characterized in that The driving device is a motor or a hydraulic cylinder.

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