Mounting structure of cross beam in three-station injection blow molding machine

Abstract

The utility model discloses a mounting structure of a cross beam in a three-station injection blow molding machine, which comprises the cross beam and a workbench, two ends of the cross beam are respectively arranged on the workbench through upright posts which are arranged vertical to the cross beam, at least one side of the middle part of the cross beam is provided with an extending boss which is arranged along the horizontal direction, and the cross beam is arranged on the workbench. Detachable supporting columns parallel to the stand columns are arranged between the extending bosses and the workbench, so that the supporting columns and the pair of stand column pair cross beams form a triangular supporting structure. Due to the fact that the middle of the cross beam is supported by the supporting column, deformation quantity caused by pressurization of the oil cylinder is greatly reduced, a mold does not sink basically, a core rod installed on the rotary table and a mold cavity are kept aligned, the wall thickness of a plastic bottle formed after injection blowing is even, and the quality of the plastic bottle is guaranteed.

Description

Technical Field

[0001] This utility model relates to a three-station injection blow molding machine, specifically to an installation structure for the crossbeam in the three-station injection blow molding machine. Background Technology

[0002] As is well known, each crossbeam in a three-station injection blow molding machine is equipped with hydraulic cylinders for driving the opening and closing of the injection mold and blow mold respectively. Currently, traditional three-station injection blow molding machines typically use a single crossbeam, with each end mounted on the worktable via a column. In actual operation, due to the large span of the single crossbeam, the middle of the crossbeam deforms significantly when pressurized by the hydraulic cylinders, causing the mold to sink. This results in the mandrel mounted on the turntable shifting from the mold cavity, failing to maintain alignment, leading to uneven preforms during injection molding, and consequently, uneven bottle wall thickness when blown from the preforms in the blow mold. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an installation structure for the crossbeam in a three-station injection molding machine that can significantly reduce the deformation of the crossbeam when the oil cylinder is pressurized.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: an installation structure for a crossbeam in a three-station injection blow molding machine, comprising: a crossbeam and a worktable, the two ends of the crossbeam being respectively mounted on the worktable by columns arranged perpendicular to the crossbeam, the crossbeam having a protruding boss arranged in a horizontal direction on at least one side of its middle portion, and a detachable support column parallel to the column being provided between the protruding boss and the worktable, so that the support column and the pair of columns form a triangular support structure for the crossbeam.

[0005] As a preferred embodiment, in the installation structure of the crossbeam in the three-station injection blow molding machine, the support column is specifically configured as follows: a locking threaded hole is provided on the top end face of the support column, a threaded column with a smaller diameter is provided at the bottom of the support column, an installation through hole corresponding to the locking threaded hole on the top end face of the support column is provided on the protruding boss, an installation threaded hole that mates with the threaded column is provided on the worktable, an adjusting nut is fitted onto the threaded column and placed in the installation threaded hole on the worktable, and then a bolt is selected, passed through the installation through hole on the protruding boss, and tightened in the locking threaded hole on the top end face of the support column.

[0006] As a preferred embodiment, in the installation structure of the crossbeam in the three-station injection blow molding machine, the threaded column is mounted on the worktable via a support connecting seat.

[0007] As a preferred embodiment, in the installation structure of the crossbeam in the three-station injection blow molding machine, the specific installation method of the support connecting seat is as follows: the support connecting seat is provided with a threaded hole corresponding to the threaded post and at least two mounting through holes arranged around the threaded hole; the worktable is provided with a mounting threaded hole corresponding to the mounting through hole on the support connecting seat; and bolts are selected to pass through the mounting through hole on the support connecting seat and are set in the corresponding mounting threaded hole on the worktable.

[0008] As a preferred embodiment, in the installation structure of the crossbeam in the three-station injection blow molding machine, at least one diagonal brace is provided between the protruding boss and the crossbeam.

[0009] As a preferred embodiment, in the installation structure of the crossbeam in the three-station injection blow molding machine, the protruding boss is provided with diagonal bracing plates on both sides between it and the crossbeam.

[0010] The beneficial effects of this utility model are:

[0011] 1. The crossbeam described in this utility model is supported by a support column in its middle part, which greatly reduces the deformation caused by the hydraulic cylinder pressurization. The mold basically does not sink. In this way, the mandrel installed on the turntable is aligned with the mold cavity, so that the plastic bottle formed after injection blowing has a uniform wall thickness, thus ensuring the quality of the plastic bottle.

[0012] 2. The specific arrangement of the support column described in this utility model has a simple structure and is very convenient to disassemble, which greatly reduces the labor intensity of operators.

[0013] 3. In this utility model, the lower end of the support column is fixed to the workbench through the support connecting seat. In this way, the height of the support column can be coarsely adjusted by changing the height of the support connecting seat, and then finely adjusted by adjusting the nut. This makes the height adjustment of the support column very simple and convenient.

[0014] 4. By setting a diagonal brace between the protruding boss and the crossbeam, this utility model greatly increases the strength of the protruding boss and can further reduce the deformation caused by the increase of the hydraulic cylinder. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the installation structure of the crossbeam in the three-station injection blow molding machine described in this utility model.

[0016] Figure 2 yes Figure 1 A schematic diagram of the left-side view structure.

[0017] Figure 3 yes Figure 2 A top-view structural diagram.

[0018] Figures 1 to 3 The reference numerals in the attached diagrams are as follows: 1. Horizontal beam, 10. Column, 11. Extended boss, 12. Diagonal brace, 21. Injection mold opening and closing cylinder, 22. Blow molding opening and closing cylinder, 31. Injection mold, 32. Blow mold, 4. Support column, 41. Threaded column, 5. Tightening bolt, 6. Adjusting nut, 7. Support connecting seat, 8. Fixing bolt, 9. Workbench. Detailed Implementation

[0019] The following describes in detail, with reference to the accompanying drawings, a specific implementation scheme for the crossbeam installation structure in a three-station injection blow molding machine according to this utility model.

[0020] like Figures 1 to 3 As shown, the installation structure of the crossbeam in a three-station injection blow molding machine of this utility model includes: a crossbeam 1 and a worktable 9. Both ends of the crossbeam 1 are respectively mounted on the worktable 9 via columns 10 arranged perpendicular to the crossbeam (this is conventional technology in the art and will not be described further here). A protruding boss 11 arranged horizontally is provided on one side of the middle portion of the crossbeam 1. Diagonal bracing plates 12 are respectively provided on both sides of the protruding boss 11 between it and the crossbeam 1. A detachable support column 4 parallel to the columns 10 is provided between the protruding boss 11 and the worktable 9, so that the support column 4 and the pair of columns 10 form a triangular support structure for the crossbeam 1. The support column 4 is specifically configured as follows: a locking threaded hole is provided on the top end face of the support column 4 (this is conventional technology in the art and will not be described further here), and a threaded column 41 with a smaller diameter is provided at the lower part of the support column 4. The threaded column 41 is mounted on the worktable 9 via a support connecting seat 7. The specific installation... The method is as follows: the support connecting seat 7 is provided with a threaded mounting hole corresponding to the threaded post 41, and at least two mounting through holes arranged around the threaded mounting hole (this is a conventional technique in the art and will not be described in detail here). The worktable 9 is provided with a mounting threaded hole corresponding to the mounting through hole on the support connecting seat 7. A fixing bolt 8 is selected, passes through the mounting through hole on the support connecting seat 7, and is set in the corresponding mounting threaded hole on the worktable 9 (this is a conventional technique in the art and will not be described in detail here). The protruding boss 11 is provided with a mounting through hole corresponding to the locking threaded hole on the top end face of the support post 4. The worktable 9 is provided with a mounting threaded hole that mates with the threaded post 41. An adjusting nut 6 is fitted onto the threaded post 41 and set in the mounting threaded hole on the worktable 9. Then, a tightening bolt 5 is selected, passes through the mounting through hole on the protruding boss 11, and is tightened in the locking threaded hole on the top end face of the support post 4.

[0021] In practical applications, the crossbeam 1 is usually equipped with an injection mold opening and closing cylinder 21 for driving the injection mold 31 to open and close, and a blow mold opening and closing cylinder 22 for driving the blow mold 32 to open and close.

[0022] In actual use, since the support column 4 adopts a detachable structure, when it is necessary to install or disassemble the injection mold 31 and the blow mold 32, the support column 4 can be removed from the worktable 9, which greatly facilitates the installation and disassembly of the injection mold 31 and the blow mold 32.

[0023] In summary, the above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes and modifications made to the shape, structure, features and spirit described in the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. An installation structure for a crossbeam in a three-station injection molding machine, comprising: A crossbeam and a workbench, wherein the two ends of the crossbeam are respectively mounted on the workbench via columns arranged perpendicular to the crossbeam, characterized in that at least one side of the crossbeam is provided with a protruding boss arranged in a horizontal direction, and a detachable support column parallel to the columns is provided between the protruding boss and the workbench, such that the support column and a pair of columns form a triangular support structure for the crossbeam.

2. The installation structure of the crossbeam in the three-station injection molding machine according to claim 1, characterized in that, The specific arrangement of the support column is as follows: a locking threaded hole is provided on the top end face of the support column, and a threaded column with a smaller diameter is provided at the bottom of the support column. An installation through hole corresponding to the locking threaded hole on the top end face of the support column is provided on the protruding boss. An installation threaded hole that mates with the threaded column is provided on the worktable. An adjusting nut is fitted onto the threaded column and placed in the installation threaded hole on the worktable. Then, a bolt is selected, passes through the installation through hole on the protruding boss, and is tightened in the locking threaded hole on the top end face of the support column.

3. The installation structure of the crossbeam in the three-station injection blow molding machine according to claim 2, characterized in that, The threaded column is mounted on the worktable via a support connecting seat.

4. The installation structure of the crossbeam in the three-station injection molding machine according to claim 3, characterized in that, The specific installation method of the support connector is as follows: the support connector has a threaded hole for mounting the threaded column corresponding to the threaded column, and at least two mounting through holes arranged around the threaded hole for mounting the threaded column. The worktable has a mounting threaded hole corresponding to the mounting through hole on the support connector. A bolt is selected, passes through the mounting through hole on the support connector, and is placed in the corresponding mounting threaded hole on the worktable.

5. The installation structure of the crossbeam in the three-station injection molding machine according to any one of claims 1 to 4, characterized in that, At least one diagonal bracing plate is provided between the protruding boss and the crossbeam.

6. The installation structure of the crossbeam in the three-station injection molding machine according to claim 5, characterized in that, The protruding boss is provided with diagonal bracing plates on both sides between it and the crossbeam.

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