Quick-change type mounting structure of stretching rod in bottle blowing machine

Abstract

The utility model discloses a quick-change type installation structure of a stretching rod in a bottle blowing machine, the stretching rod is installed on an installation seat, an installation through hole is arranged on the installation seat, an installation end of the stretching rod penetrates through the installation through hole, a clamping and blocking groove which is concave inwards is arranged on the outer wall of the stretching rod in the installation through hole, and the clamping and blocking groove is arranged in the installation through hole. A locking pin hole is further formed in the mounting base, a locking pin is arranged in the locking pin hole, the locking pin is perpendicular to the stretching rod, a locking pin notch is formed in the outer wall of the locking pin, the locking pin can rotate in the locking pin hole, and the locking pin can rotate to be clamped into the clamping and blocking groove of the stretching rod so that the stretching rod can be in a locked state; or the locking pin can completely rotate out of the clamping and blocking groove, so that the notch of the locking pin is right opposite to the clamping and blocking groove, the locking pin is not in contact with the clamping and blocking groove in the state, and the stretching rod is in an unlocking state. The utility model has the advantages that the installation and replacement of the stretching rod are greatly facilitated, and the installation and replacement efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid filling equipment, in particular to an installation structure of a stretching rod in a bottle blowing machine. Background Art

[0002] The stretching mechanism is an important part of the bottle blowing machine. The stretching mechanism includes a stretching rod, which is fixedly mounted on a stretching rod mounting seat, which is movably mounted on a frame, and a driving mechanism for driving the mounting seat to move up and down is provided on the frame. The heated preform is stretched by the stretching rod and blown into a bottle. Different types of stretching rods are required for different bottle types.

[0003] At present, the stretch rod is fixed on the mounting base through the clamp block and the stretch rod. When the stretch rod needs to be replaced, the screws need to be removed and then tightened with the screws after the replacement is completed. This makes each replacement very cumbersome and takes a long time. Since the rotary blow molding machine has a large number of stretch rods, the replacement of the stretch rod is time-consuming and laborious. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a quick-change installation structure for a stretch rod in a bottle blowing machine, which can realize rapid installation and replacement of the stretch rod, has a simple structure and low manufacturing cost.

[0005] In order to solve the above problems, the technical solution adopted by the utility model is: a quick-change installation structure of a stretching rod in a bottle blowing machine, the stretching rod is installed on a mounting seat, the two ends of the stretching rod are respectively a stretching end for stretching the bottle blank and a mounting end for installation, a mounting through hole is provided on the mounting seat, the mounting end of the stretching rod passes through the mounting through hole, an inwardly recessed blocking groove is provided on the outer wall of the stretching rod in the mounting through hole, a locking pin hole is also provided on the mounting seat, a locking pin is provided in the locking pin hole, the locking pin and the stretching rod are perpendicularly arranged to each other, and the locking A locking pin notch is provided on the outer wall of the pin, and the locking pin can rotate in the locking pin hole, and the locking pin can rotate to be stuck in the blocking groove of the stretching rod, so that the stretching rod is in a locked state; or the locking pin can be completely rotated out of the blocking groove, so that the locking pin notch is opposite to the blocking groove. In this state, the locking pin has no contact with the blocking groove, and the stretching rod is in an unlocked state; an axial limiting mechanism is provided between the stretching rod and the mounting through hole, and a stretching rod locked state positioning mechanism and a stretching rod unlocked state positioning mechanism are provided between the locking pin and the mounting seat.

[0006] Furthermore, in the aforementioned quick-change installation structure of the stretch rod in the bottle blowing machine, the blocking groove is an arc-shaped groove adapted to the outer wall of the locking pin.

[0007] Furthermore, in the aforementioned quick-change installation structure of the stretch rod in the bottle blowing machine, the locking pin notch is provided on the outer wall of the locking pin outside the blocking groove position.

[0008] Furthermore, in the aforementioned quick-change installation structure of the stretch rod in the bottle blowing machine, the notch of the locking pin is in the shape of an inwardly recessed arc.

[0009] Furthermore, in the aforementioned quick-change mounting structure of the stretching rod in the bottle blowing machine, the axial limiting mechanism between the stretching rod and the mounting through hole comprises: a first retaining spring, which is arranged at the end of the mounting through hole and is clamped on the outer wall of the mounting end of the stretching rod.

[0010] Furthermore, in the aforementioned quick-change mounting structure of the stretching rod in the bottle blowing machine, the stretching rod locking state positioning mechanism and the stretching rod unlocking state positioning mechanism between the locking pin and the mounting seat include: a ball head plunger is provided on the locking pin, and locking holes and unlocking holes are provided on the inner walls of the locking pin holes on both sides of the locking pin; when the stretching rod is in the unlocking state, the ball head of the ball head plunger is blocked in the unlocking hole, and when the stretching rod is in the locking state, the ball head of the ball head plunger is blocked in the locking hole.

[0011] Furthermore, in the aforementioned quick-change installation structure of the stretching rod in the bottle blowing machine, a locking pin is provided with a blocking step at one end, the blocking step is blocked at one end of the locking pin hole, and a second retaining spring is provided on the outer wall of the other end of the locking pin, the second retaining spring is blocked outside the other end of the locking pin hole; a handle for rotation is provided on the locking pin at one end of the locking pin provided with the blocking step.

[0012] The utility model has the advantages of being extremely simple in structure, ingenious and practical, and extremely convenient to use, greatly facilitating the installation and replacement of the stretching rod, and being able to effectively improve the efficiency of the installation and replacement of the stretching rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a structural schematic diagram of a stretching rod in a quick-change installation structure of a stretching rod in a bottle blowing machine, in which the stretching rod is in an unlocked state.

[0014] Figure 2 yes Figure 1 Schematic diagram of the AA section structure.

[0015] Figure 3 The utility model is a structural schematic diagram of a stretching rod in a quick-change installation structure of a stretching rod in a bottle blowing machine in which the stretching rod is in a locked state.

[0016] Figure 4 yes Figure 3 Schematic diagram of the BB cross-section structure.

[0017] Figure 5The utility model is a schematic diagram of a quick-change installation structure of a stretch rod in a bottle blowing machine. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0019] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the quick-change installation structure of the stretch rod in the bottle blowing machine, the stretch rod 1 is installed on the mounting seat 2, and the two ends of the stretch rod 1 are respectively a stretching end 11 for stretching the bottle blank and a mounting end 12 for installation. The mounting seat 2 is provided with a mounting through hole 21, and the mounting end 12 of the stretch rod 1 passes through the mounting through hole 21. The outer wall of the stretch rod 1 in the mounting through hole 21 is provided with an inwardly recessed blocking groove 101.

[0020] The mounting base 2 is also provided with a locking pin hole 31, in which a locking pin 3 is provided, the locking pin 3 and the stretching rod 1 are arranged perpendicular to each other, and a locking pin notch 301 is provided on the outer wall of the locking pin 3. In this embodiment, a blocking step 302 is provided at one end of the locking pin 3, the blocking step 302 is blocked at one end of the locking pin hole 31, and a second clamping spring 303 is provided on the outer wall of the other end of the locking pin 3, the second clamping spring 303 is blocked outside the other end of the locking pin hole 31; a handle 34 for rotation is provided on the locking pin 3 at one end provided with the blocking step 302.

[0021] The locking pin 3 can rotate in the locking pin hole 31, and the locking pin 3 can rotate to be inserted into the blocking groove 101 of the stretching rod 1, so that the stretching rod 1 is in a locked state. Figure 3 , Figure 4 Or the locking pin 3 can be completely rotated out of the blocking groove 101, so that the locking pin notch 301 is facing the blocking groove 101. In this state, the locking pin 3 has no contact with the blocking groove 101, and the stretching rod 3 is in an unlocked state, as shown. Figure 1 , Figure 2 shown.

[0022] In this embodiment, the blocking groove 101 is an arc-shaped groove adapted to the outer wall of the locking pin 3. The locking pin notch 301 is provided on the outer wall of the locking pin 3 outside the blocking groove 101. The locking pin notch 301 is in an inwardly concave arc shape.

[0023] In order to prevent the stretching rod 1 from axial movement, in this embodiment, an axial limiting mechanism is provided between the stretching rod 1 and the mounting through hole 21. Specifically, the axial limiting mechanism between the stretching rod 1 and the mounting through hole 21 includes: a first clamping spring 4, which is provided at the end of the mounting through hole 21 and clamped on the outer wall of the mounting end 12 of the stretching rod 1.

[0024] A stretch rod locking state positioning mechanism and a stretch rod unlocking state positioning mechanism are provided between the locking pin 3 and the mounting seat 2. In this embodiment, the stretch rod locking state positioning mechanism and the stretch rod unlocking state positioning mechanism between the locking pin 3 and the mounting seat 2 include: a ball plunger 5 is provided on the locking pin 3, and a locking hole 311 and an unlocking hole 312 are provided on the inner wall of the locking pin hole 31 on both sides of the locking pin 3. When the stretch rod 1 is in the unlocked state, the ball head 51 of the ball plunger 5 is blocked in the unlocking hole 312, and when the stretch rod 1 is in the locked state, the ball head 51 of the ball plunger 5 is blocked in the locking hole 31.

[0025] When the stretching rod 1 needs to be replaced, just turn the handle 34 to drive the locking pin 3 to rotate, so that the locking pin notch 301 of the locking pin 3 is facing the blocking groove 101, and the locking pin 3 has no contact with the blocking groove 101, that is, the stretching rod 3 is in an unlocked state, so that the stretching rod 1 can be replaced and installed very conveniently. Then turn the handle 34 again to drive the locking pin 3 to rotate, so that the locking pin 3 is stuck in the blocking groove 101 of the stretching rod 1, so that the stretching rod 1 is in a locked state. The whole replacement process is fast, convenient and easy to operate. The above proves that the quick-change installation structure of the stretching rod in the bottle blowing machine described in the utility model has an extremely simple structure, but is ingenious and practical, and is extremely convenient to use. It greatly facilitates the installation and replacement of the stretching rod, and can effectively improve the efficiency of the installation and replacement of the stretching rod.

Claims

1. A quick-change installation structure for a stretching rod in a bottle blowing machine, wherein the stretching rod is installed on a mounting seat, and the two ends of the stretching rod are respectively a stretching end for stretching the preform and an installation end for installation, and the characteristics are: A mounting through hole is provided on the mounting seat, and the mounting end of the stretching rod is passed through the mounting through hole. An inwardly recessed blocking groove is provided on the outer wall of the stretching rod in the mounting through hole. A locking pin hole is also provided on the mounting seat, and a locking pin is provided in the locking pin hole. The locking pin and the stretching rod are arranged perpendicular to each other, and a locking pin notch is provided on the outer wall of the locking pin. The locking pin can rotate in the locking pin hole, and the locking pin can be rotated to be stuck in the blocking groove of the stretching rod, so that the stretching rod is in a locked state; or the locking pin can be completely rotated out of the blocking groove, so that the locking pin notch is opposite to the blocking groove. In this state, the locking pin has no contact with the blocking groove, and the stretching rod is in an unlocked state; an axial limiting mechanism is provided between the stretching rod and the mounting through hole, and a stretching rod locking state positioning mechanism and a stretching rod unlocking state positioning mechanism are provided between the locking pin and the mounting seat.

2. The quick-change installation structure of the stretch rod in the bottle blowing machine according to claim 1, characterized in that: The blocking groove is an arc-shaped groove adapted to the outer wall of the locking pin.

3. The quick-change installation structure of the stretch rod in the bottle blowing machine according to claim 1, characterized in that: The locking pin notch is arranged on the outer wall of the locking pin outside the blocking groove position.

4. The quick-change installation structure of the stretch rod in the bottle blowing machine according to claim 3, characterized in that: The locking pin notch is in an inwardly concave arc shape.

5. The quick-change installation structure of the stretch rod in the bottle blowing machine according to claim 1, characterized in that: The axial limiting mechanism between the stretching rod and the installation through hole comprises: a first clamping spring, which is arranged at the end of the installation through hole and clamped on the outer wall of the installation end of the stretching rod.

6. The quick-change installation structure of the stretch rod in the bottle blowing machine according to claim 1, characterized in that: The locking state positioning mechanism of the stretching rod between the locking pin and the mounting seat and the unlocking state positioning mechanism of the stretching rod include: a ball head plunger is arranged on the locking pin, and locking holes and unlocking holes are arranged on the inner walls of the locking pin holes on both sides of the locking pin; when the stretching rod is in the unlocking state, the ball head of the ball head plunger is blocked in the unlocking hole, and when the stretching rod is in the locking state, the ball head of the ball head plunger is blocked in the locking hole.

7. The quick-change installation structure of the stretch rod in the bottle blowing machine according to claim 1, characterized in that: A blocking step is provided at one end of the locking pin, which blocks one end of the locking pin hole. A second clamping spring is provided on the outer wall of the other end of the locking pin, which blocks the outside of the other end of the locking pin hole. A handle for rotation is provided on the locking pin at one end of the blocking step.

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