CN201446688U

CN201446688U - Hollow blowing forming die

Info

Publication number: CN201446688U
Application number: CN200920047156XU
Authority: CN
Inventors: 钱贤龙
Original assignee: ZHANGJIAGANG PUTIAN MACHINERY CO Ltd
Current assignee: ZHANGJIAGANG DEMAN MACHINERY TECHNOLOGY CO., LTD.
Priority date: 2009-06-16
Filing date: 2009-06-16
Publication date: 2010-05-05
Anticipated expiration: 2019-06-16

Abstract

The utility model discloses a hollow blowing forming die, capable of locally adjusting the geometrical shape of a flow passage, comprising a die body, a die sleeve arranged on the die body, and a die core arranged in the die sleeve, the flow passage is arranged between the die sleeve and the die core, the wall of the die sleeve is provided with at least a radial flow passage slide block in a moving manner, and each flow passage slide block is connected with a piston rod of a servo oil cylinder arranged on the external wall of the die sleeve. According to the utility model, it is possible to adjust the geometrical shape of the flow passage locally based on actual need, on one hand, it meets the requirement of finely adjusting the flow passage during practical production process, on the other hand, it is possible to reduce weight by reducing local wall thickness (commonly reduced by 10%) to reduce cost and improve production efficiency, and the utility model has remarkable effect of industrial large containers; or the local wall thickness of the flow passage is added to increase the strength so as to improve products quality and service life.

Description

Hollow blow-molding formation die head

Technical field

The utility model relates to hollow blow-molding formation die head.

Background technology

As everyone knows, hollow blow-molding formation die head, its structure comprises: die body and be arranged on the die sleeve in the die body and be arranged on core rod in the die sleeve is provided with runner between die sleeve and the core rod.In case this die head design typification, the geometry of its runner just is fixed, and is immutable.All there are slight difference usually in the runner and the needs of production of typing, and this species diversity can be exaggerated along with the quickening of process velocity, under the situation of co-extrusion, it is more outstanding that this difference seems, because when output increases, the body distribution of melting of different levels has tangible change.Because the geometry of runner can not change with the quickening of the speed of service of production line, causes the thickness deviation of each coextruded layer can become increasing, thereby has influence on the quality of finished product; And, flow path wall can not be according to the local flow channel shape that changes of the mode of pure linearity, and the wall thickness of the feasible product of producing all is unalterable, in actual production process, can not come weight reduction by reducing local wall thickness, reach the purpose that reduces cost and enhance productivity; Can not increase its intensity by increasing local wall thickness again,, improve its service life to improve the quality of product.

The utility model content

Technical problem to be solved in the utility model is: provide a kind of can the local hollow blow-molding formation die head of adjusting the runner geometry.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is: hollow blow-molding formation die head, comprise: die body and be arranged on the die sleeve in the die body and be arranged on core rod in the die sleeve, be provided with runner between die sleeve and the core rod, movablely in the die sleeve wall be equipped with at least one runner slide block radially, each runner slide block links to each other with the piston rod of servo-cylinder on being arranged on the die sleeve outer wall.

Activity is equipped with at least two runner slide blocks radially in the described die sleeve wall, and all runner slide blocks are evenly arranged in the die sleeve wall, and are corresponding with it, evenly are provided with corresponding servo-cylinder on the outer wall of described die sleeve.

The beneficial effects of the utility model are: the utility model can locally according to actual needs be adjusted the runner geometry, has satisfied the needs that actual production process (especially under the situation of co-extrusion) is finely tuned runner on the one hand; On the other hand, can come weight reduction (can alleviate 10% usually) by reducing local wall thickness, reach the purpose that reduces cost and enhance productivity, this effect on industrial bulk container is particularly remarkable; Perhaps increase its intensity,, improve its service life to improve the quality of product by increasing local wall thickness.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the hydraulic control principle schematic of the servo-cylinder in the utility model.

Fig. 3 is the arrangement schematic diagram one of runner module.

Fig. 4 is the structural representation with two district's attenuates of the corresponding runner of Fig. 3.

Fig. 5 is the structural representation with the thickening of two districts of the corresponding runner of Fig. 3.

Fig. 6 is the arrangement schematic diagram two of runner module.

Fig. 7 is the structural representation with three district's attenuates of the corresponding runner of Fig. 6.

Fig. 8 is the structural representation with the thickening of three districts of the corresponding runner of Fig. 6.

Fig. 9 is the arrangement schematic diagram three of runner module.

Figure 10 is the structural representation with four district's attenuates of the corresponding runner of Fig. 9.

Figure 11 is and four districts of the corresponding runner of Fig. 9 thickening runner.

Figure 12 is the structural representation of the uniform runner of wall thickness in the same way.

Among Fig. 1 to Figure 12: 1, die body, 2, die sleeve, 3, the runner slide block, 4, core rod, 5, servo-cylinder, 8, runner, 9, motor, 10, oil pump, 11, servo controller, 12, servo valve, 13, oil filter, 14, electronic ruler.

The specific embodiment

Below in conjunction with accompanying drawing, describe specific embodiments of the present utility model in detail.

As shown in Figure 1, hollow blow-molding formation die head described in the utility model, comprise: die body 1 and be arranged on the die sleeve 2 in the die body 1 and be arranged on core rod 4 in the die sleeve 2, be provided with runner 8 between die sleeve 2 and the core rod 4, as shown in Figure 3, evenly be equipped with two runner slide blocks 3 radially in the wall of die sleeve 2, corresponding with it, evenly be provided with two servo-cylinders 5 on the outer wall of die sleeve 2, each runner slide block 3 links to each other with the piston rod of servo-cylinder 5.During practical application, as shown in Figure 6, can evenly wear three runner slide blocks 3 radially in the wall of die sleeve 2, corresponding with it, evenly be provided with three servo-cylinders 5 on the outer wall of die sleeve 2, the piston rod of the servo-cylinder 5 on each runner slide block 3 and the outer wall that is arranged on die sleeve 2 links to each other; As shown in Figure 9, also can evenly wear four runner slide blocks 3 radially in the wall of die sleeve 2, corresponding with it, evenly be provided with four servo-cylinders 5 on the outer wall of die sleeve 2, the piston rod of the servo-cylinder 5 on each runner slide block 3 and the outer wall that is arranged on die sleeve 2 links to each other.

In the actual use, can adopt hydraulic control principle shown in Figure 2, the quantity of the control module that is made of servo controller 11, servo valve 12, oil filter 13, electronic ruler 14 is corresponding with the quantity of servo-cylinder 5.During work, motor 9 drives oil pump 10, for underground provides pressure oil, the position that servo controller 11 feeds back the runner slide block 3 of coming according to electronic ruler 14, servo-cylinder 5 is controlled, that is: the piston rod of control servo-cylinder 5 is flexible, makes runner slide block 3 arrive preposition.By such control, for the die head that adopts two runner slide blocks 3, can obtain Fig. 4, Fig. 5 or flow passage structure shown in Figure 12; For the die head that adopts three runner slide blocks 3, can obtain Fig. 7, Fig. 8 or flow passage structure shown in Figure 12; For the die head that adopts four runner slide blocks 3, then can obtain Figure 10, Figure 11 or flow passage structure shown in Figure 12.

Claims

1. hollow blow-molding formation die head, comprise: die body and be arranged on the die sleeve in the die body and be arranged on core rod in the die sleeve, be provided with runner between die sleeve and the core rod, it is characterized in that: movablely in the die sleeve wall be equipped with at least one runner slide block radially, each runner slide block links to each other with the piston rod of servo-cylinder on being arranged on the die sleeve outer wall.

2. hollow blow-molding formation die head as claimed in claim 1, it is characterized in that: activity is equipped with at least two runner slide blocks radially in the described die sleeve wall, all runner slide blocks are evenly arranged in the die sleeve wall, corresponding with it, evenly be provided with corresponding servo-cylinder on the outer wall of described die sleeve.