Die changing and quick locking device of rotary bottle blowing machine

Abstract

The utility model relates to the field of bottle blowing machine fast locking, in particular to a rotary bottle blowing machine die changing fast locking device which comprises two bottle blowing devices, each bottle blowing device comprises a die used for forming materials, a middle sleeve arranged on the die and a die shell installed on the middle sleeve, the number of the bottle blowing devices is two, and the two bottle blowing devices are connected through a connecting shaft. The end, away from the connecting shaft, of the bottle blowing device is an opening and closing end, and the middle sleeve and the mold shell are fixed through a quick locking assembly. The quick-locking assembly comprises a quick-locking female head installed on the middle sleeve and a quick-locking male head installed on the mold shell, the quick-locking female head and the quick-locking male head are detachable, a quick-locking device acts, the quick-locking function is achieved, operation is convenient, the assembling efficiency is improved, when pressure exists in the mold to expand outwards, a mounting sleeve and a positioning rod on the quick-locking male head can shift front and back, and the quick-locking effect is achieved. The pin shaft plays a guiding role, the disc spring always tensions the mold shell and the middle sleeve to generate counter-acting force to counteract part of opening force of the mold, and the product quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of quick locks for bottle blowing machines, in particular to a quick lock device for changing molds of a rotary bottle blowing machine. Background Art

[0002] A bottle blowing machine refers to a machine that blows bottles. The simplest explanation is that it is a machine that can blow plastic particles (softened into liquid) or finished bottle embryos into bottles through certain process means.

[0003] When the plastic bottle blowing machine uses blow molding to blow bottles in the mold, there is a middle sleeve wrapped outside the mold, and the middle sleeve also has a mold shell to fix the middle sleeve. Generally, the number of molds, middle sleeves and mold shells is two and symmetrical to each other. The components formed by the two molds, middle sleeves and mold shells can be used for bottle blowing. When the material in the mold is blown, the mold will be full of molded material, which will press against the entire mold. At this time, the mold will press against the middle sleeve, and the middle sleeve will press against the mold shell. The mold shell will form a reaction force to offset the force from the mold and the middle sleeve. Generally, the middle sleeve and the mold shell are connected by bolts or screws. If bolts or screws are used, the installation is cumbersome and requires more than one bolt and screw. Many bolts and screws are required for installation, which is cumbersome. If there are no screws or bolts for fixing, the middle sleeve and the mold will be misaligned, which will affect the production quality of the bottle blowing machine.

[0004] In order to improve the production quality of the bottle blowing machine and improve the assembly efficiency at the same time, a new quick locking device is needed to solve the above problems. Summary of the invention

[0005] In order to solve the above technical problems, the utility model provides a rotary blow molding machine mold changing quick locking device. The utility model provides a rotary blow molding machine mold changing quick locking device, comprising: a bottle blowing device, the bottle blowing device comprising a mold for molding materials, a middle sleeve arranged on the mold, and a mold shell installed on the middle sleeve, the bottle blowing device has two and is connected by a connecting shaft, the end of the bottle blowing device away from the connecting shaft is an open and closed end, the middle sleeve and the mold shell are fixed by a quick locking assembly; the quick locking assembly comprises a quick locking female head installed on the middle sleeve and a quick locking male head installed on the mold shell, and the quick locking female head and the quick locking male head are detachable.

[0006] Preferably, the quick-lock female head includes a mounting piece, a mating piece opened on the mounting piece and mating with the quick-lock male head, and a first fixing piece for fixing the mounting piece to the middle sleeve; the mounting piece is an annular block, the first fixing piece includes a pin, the annular block is mounted on the middle sleeve by the pin, the number of the first fixing piece is at least one, the mating piece is an arc groove opened on the annular block, and the shape of the arc groove is L-shaped.

[0007] Preferably, the quick-lock male head includes a second fixing part installed on the mold shell, a positioning part installed on the second fixing part, and an energy storage part installed on the second fixing part; the second fixing part is a pin shaft; the positioning part is a positioning ring inserted on the pin shaft; the energy storage part is a disc spring arranged between the positioning ring and the pin shaft, and the number of the disc springs is four groups and they are symmetrical to each other.

[0008] Preferably, a mounting groove is provided on the pin shaft, and an adapting groove matching the mounting groove is provided on the positioning ring.

[0009] Preferably, the positioning ring is provided with a positioning groove to prevent the quick lock male head from being misplaced. Preferably, the quick lock male head also includes a connector connected to the quick lock female head, the connector includes a mounting sleeve plugged on the pin shaft and a positioning rod fixed on the mounting sleeve, and the positioning rod is adapted to the arc groove.

[0010] Preferably, the arc-shaped groove is provided with a groove matched with the positioning rod.

[0011] Preferably, a loading and unloading hole is provided on the pin shaft.

[0012] Compared with the related technology, the utility model provides a quick-locking device for mold changing of a rotary bottle blowing machine, which has the following beneficial effects: the quick-locking device realizes the quick-locking function, is easy to operate, and improves assembly efficiency; when there is pressure in the mold and it expands outward, the mounting sleeve and the positioning rod on the quick-locking male head can be offset forward and backward, thereby controlling the expansion direction of the mold; the pin shaft here acts as a guide, and the disc spring keeps tightening the mold shell and the middle sleeve to generate a reaction force to offset the partial opening force of the mold, thereby ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The structure of the quick lock female head of the utility model is shown in FIG. Figure 1 ;

[0014] Figure 2 This is a schematic diagram of the structure of the quick-lock male head of the utility model;

[0015] Figure 3 Assemble the quick-lock female and quick-lock male structures of the utility model Figure 1 ;

[0016] Figure 4 The structure of the quick lock female head of the utility model is shown in FIG. Figure 2 ;

[0017] Figure 5 Assemble the quick-lock female and quick-lock male structures of the utility model Figure 1 ;

[0018] Figure 6 This is an assembly diagram of the quick lock component, the mold, the middle sleeve and the mold shell of the utility model.

[0019] Numbers in the figure: 1, annular block; 2, bolt; 3, arc groove; 4, mounting sleeve; 5, positioning ring; 6, positioning rod; 7, disc spring; 8, mounting block; 9, positioning groove; 10, loading and unloading hole; 11, mold shell; 12, mold. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0022] See also Figures 1 to 5 The utility model provides a rotary bottle blowing machine mold changing quick-locking device, comprising: a bottle blowing device, the bottle blowing device comprising a mold 12 for molding a material, a middle sleeve arranged on the mold 12, and a mold shell 11 installed on the middle sleeve. The bottle blowing device has two and is connected by a connecting shaft, and the end of the bottle blowing device away from the connecting shaft is an opening and closing end, and the middle sleeve and the mold shell 11 are fixed by a quick-locking assembly; the quick-locking assembly comprises a quick-locking female head installed on the middle sleeve and a quick-locking male head installed on the mold shell 11, and the quick-locking female head and the quick-locking male head are detachable.

[0023] In this embodiment, two quick-locking assemblies are installed on each mold shell 11 and the middle sleeve. The setting of the two quick-locking assemblies can better coordinate the fixation of the middle sleeve and the mold shell 11, so that the expansion of the middle sleeve can be more synchronous, and it is avoided that only one end of the middle sleeve is unloaded when expanding. The two quick-locking assemblies can evenly unload the force transmitted by the middle sleeve.

[0024] The quick-lock female head includes a mounting part, a matching part opened on the mounting part and matching with the quick-lock male head, and a first fixing part for fixing the mounting part and the middle sleeve; the mounting part is an annular block 1, the first fixing part includes a pin 2, the annular block 1 is installed on the middle sleeve through the pin 2, the number of the first fixing parts is at least one, and the matching part is an arc groove 3 opened on the annular block 1, and the shape of the arc groove 3 is L-shaped.

[0025] In this embodiment, the annular block 1 is mounted on the middle sleeve by means of the pin 2. This fixing method is more stable, and the structure of the quick-lock female head can be better connected with the quick-lock male head.

[0026] The quick-lock male head includes a second fixing part installed on the mold shell 11, a positioning part installed on the second fixing part, and an energy storage part installed on the second fixing part; the second fixing part is a pin shaft 8; the positioning part is a positioning ring 5 inserted on the pin shaft 8; the energy storage part is a disc spring 7 arranged between the positioning ring 5 and the pin shaft 8, the number of disc springs 7 is four groups and they are symmetrical to each other, the quick-lock male head also includes a connecting part connected to the quick-lock female head, the connecting part includes a mounting sleeve 4 inserted on the pin shaft 8 and a positioning rod 6 fixed on the mounting sleeve 4, the positioning rod 6 is adapted to the arc groove 3, and the arc groove 3 is provided with a groove adapted to the positioning rod 6.

[0027] In this embodiment, when the mold 12 and the middle sleeve are expanded, the quick-lock female head will be close to the quick-lock male head. At this time, because the quick-lock male head is fixed on the mold shell 11, the positioning rod 6 will slowly approach the inner wall of the groove. At this time, the installation sleeve 4 will be close to the positioning ring 5, and the positioning ring 5 will squeeze the disc spring 7, and the disc spring 7 will remove the force of the middle sleeve. This way of use will not cause damage to the mold shell 11.

[0028] The pin shaft 8 is provided with a mounting groove, and the positioning ring 5 is provided with an adapting groove adapted to the mounting groove.

[0029] The positioning ring 5 is provided with a positioning groove 9 to prevent the quick-lock male head from being misplaced.

[0030] In this embodiment, in order to prevent the positioning ring 5 from rotating on the pin rod, it can only be plugged on the pin rod. At the same time, a limit rod is provided on the mold shell 11, and the limit rod is in the positioning groove 9, which can effectively avoid installation misalignment.

[0031] The pin shaft 8 is provided with a loading and unloading hole 10 .

[0032] Specific usage of this device:

[0033] First, the quick-lock female head is fixed on the middle sleeve by the pin 2, and then the quick-lock male head is connected to the quick-lock female head. The specific connection method is to insert the connecting piece and the pin rod on the quick-lock male head into the arc groove 3. At this time, the positioning rod 6 is in the arc groove 3. Because the arc groove 3 is L-shaped, the quick-lock male head is rotated to make the positioning rod 6 close to the groove. In order to avoid the quick-lock male head from being inserted into the quick-lock female head, the positioning groove 9 and the limit rod can be designed to avoid such a situation. At the same time, the number of the arc groove 3 and the positioning rod 6 is two and they are symmetrical to each other;

[0034] After installation is completed, it is fixed to the mold shell 11 through the loading and unloading hole 10. When in use, when the internal mold 12 is blowing the bottle, it will expand through the bottle body, and the middle sleeve will also expand, and the quick lock female head will be close to the quick lock male head. At this time, because the quick lock male head is fixed on the mold shell 11, the positioning rod 6 will slowly approach the inner wall of the groove. At this time, the installation sleeve 4 will be close to the positioning ring 5, and the positioning ring 5 will squeeze the disc spring 7, and the disc spring 7 will remove the force of the middle sleeve. This way of use will not cause damage to the mold shell 11. Compared with the installation method of bolts or screws, it avoids the problem of torque causing pressure imbalance and causing damage to the middle sleeve and the mold shell 11.

[0035] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A mold changing quick locking device for a rotary bottle blowing machine, comprising: The bottle blowing device comprises a mold (12) for molding a material, a middle sleeve arranged on the mold (12), and a mold shell (11) installed on the middle sleeve, the bottle blowing device has two devices connected by a connecting shaft, and the end of the bottle blowing device away from the connecting shaft is an open end, characterized in that the middle sleeve and the mold shell (11) are fixed by a quick lock assembly; the quick lock assembly comprises a quick lock female head installed on the middle sleeve and a quick lock male head installed on the mold shell (11), and the quick lock female head and the quick lock male head are detachable.

2. A mold changing quick locking device for a rotary bottle blowing machine according to claim 1, characterized in that: The quick-lock female head comprises a mounting piece, a matching piece provided on the mounting piece and matching with the quick-lock male head, and a first fixing piece used to fix the mounting piece to the middle sleeve; the mounting piece is an annular block (1), the first fixing piece comprises a pin (2), the annular block (1) is mounted on the middle sleeve via the pin (2), and the number of the first fixing piece is at least one.

3. A mold changing quick locking device for a rotary bottle blowing machine according to claim 2, characterized in that: The matching piece is an arc-shaped groove (3) formed on the annular block (1), and the shape of the arc-shaped groove (3) is L-shaped.

4. A mold changing quick locking device for a rotary bottle blowing machine according to claim 3, characterized in that: The quick-lock male head comprises a second fixing member mounted on the mold shell (11), a positioning member mounted on the second fixing member, and an energy storage member mounted on the second fixing member; the second fixing member is a pin shaft (8); the positioning member is a positioning ring (5) plugged into the pin shaft (8); and the energy storage member is a disc spring (7) arranged between the positioning ring (5) and the pin shaft (8).

5. A mold changing quick locking device for a rotary bottle blowing machine according to claim 4, characterized in that: The disc springs (7) are in four groups and are symmetrical to each other.

6. A quick-locking device for mold change of a rotary bottle blowing machine according to claim 4, characterized in that: The pin shaft (8) is provided with a mounting groove, and the positioning ring (5) is provided with an adaption groove adapted to the mounting groove.

7. The mold changing quick locking device of a rotary bottle blowing machine according to claim 4, characterized in that: The positioning ring (5) is provided with a positioning groove (9) for preventing the quick-lock male head from being misplaced.

8. The mold changing quick locking device of a rotary bottle blowing machine according to claim 4, characterized in that: The quick-lock male head also includes a connecting piece connected to the quick-lock female head, the connecting piece includes a mounting sleeve (4) plugged onto the pin shaft (8) and a positioning rod (6) fixed onto the mounting sleeve (4), the positioning rod (6) being adapted to the arc-shaped groove (3).

9. A mold changing quick locking device for a rotary bottle blowing machine according to claim 8, characterized in that: The arc-shaped groove (3) is provided with a groove matched with the positioning rod (6).

10. The mold changing quick locking device of a rotary bottle blowing machine according to claim 4, characterized in that: The pin shaft (8) is provided with a loading and unloading hole (10).

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