CN108819190B

CN108819190B - Vacuum plastic-absorbing demoulding mechanism for refrigerator liner

Info

Publication number: CN108819190B
Application number: CN201810594205.5A
Authority: CN
Inventors: 王罗海; 储开峰; 沈应彪; 田鹏; 杨新禹
Original assignee: Chuzhou Kingmould Equipment Mould Manufacturing Co ltd
Current assignee: Anhui Kaimo Equipment Mold Co ltd
Priority date: 2018-06-11
Filing date: 2018-06-11
Publication date: 2020-07-03
Anticipated expiration: 2038-06-11
Also published as: CN108819190A

Abstract

The invention provides a vacuum plastic-sucking and demolding mechanism for a refrigerator liner, which comprises an air cylinder arranged on a mold frame, wherein a sliding block is arranged at the end of a piston shaft of the air cylinder, core-pulling blocks are symmetrically arranged on two sides of the sliding block, the core-pulling blocks are connected to the sliding block in a sliding manner, a connecting rod is hinged to the inner side wall of each core-pulling block, a connecting block is arranged at the tail end of each connecting rod, the connecting block is arranged in a sliding groove of a top block, the top block is connected with the connecting block through a rolling shaft, a waist-shaped groove for sliding of the rolling shaft is formed in the top block, the sliding. The scheme of the invention increases the demoulding force and improves the core pulling efficiency.

Description

Vacuum plastic-absorbing demoulding mechanism for refrigerator liner

Technical Field

The invention relates to the technical field of refrigerator manufacturing equipment, in particular to a vacuum plastic sucking and demolding mechanism for a refrigerator liner.

Background

The principle of vacuum forming of the refrigerator liner is that a thermoplastic plastic plate (sheet) is fixed above a mould, the thermoplastic plastic plate (sheet) is heated to a softening state by a radiation heater, the mould is moved to the plastic plate, a cavity is formed between the mould and the plate, air in the cavity is pumped out by a vacuum pump, the plate is covered on the mould by means of atmospheric pressure to form the mould, and after cooling and shaping, a plastic piece is demoulded from the mould by means of compressed air. The refrigerator inner container is large in size, thin in wall and easy to deform, in order to demould smoothly, a demoulding mechanism is often needed, the existing demoulding mechanism adopts a core pulling mechanism, however, the contact area between the core pulling mechanism and a finished product is often small, so that the demoulding force is not enough, and in addition, the core pulling mechanism often causes obstruction to the forming of the refrigerator inner container, so that the side wall of the refrigerator inner container can be wrinkled, and the bottom surface of the refrigerator inner container is not attractive.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a vacuum plastic sucking and demolding mechanism for a refrigerator liner, which overcomes the defects of the prior art, enables the appearance of the refrigerator liner to be more attractive, and increases the demolding force in the core pulling process, so that the core pulling effect is better.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme:

the utility model provides a refrigerator inner bag vacuum plastic uptake demoulding mechanism, is including setting up the cylinder on the mould frame, the piston axle head of cylinder is provided with the slider, the bilateral symmetry of slider is provided with the core pulling block, core pulling block sliding connection is on the slider, it has the connecting rod to articulate on the inside wall of core pulling block, end on the connecting rod is provided with the connecting block, the connecting block sets up in the spout of kicking block, be connected through the roller bearing between kicking block and the connecting block, just be provided with on the kicking block and be used for the gliding waist type groove of roller bearing, the slider is conical slider just the medial surface of core pulling block suits with the toper face.

The inner side wall of the core-pulling block is provided with a sliding chute for sliding the sliding block, and the cross section of the sliding chute is in an isosceles trapezoid shape.

The front end of the core-pulling block is provided with a limiting groove used for limiting the top block, the cross section of the limiting groove is rectangular, and one end of the top block is inserted into the limiting groove.

The two sides of the top block are symmetrically provided with connecting rod mounting seats, the connecting rods are hinged in the connecting rod mounting seats, and the hinged positions of the connecting rods on the two sides are connected with each other to form an isosceles trapezoid structure.

The core-pulling block comprises a first core-pulling block and a second core-pulling block, the first core-pulling block is arranged on the second core-pulling block, and the shapes of the first core-pulling block and the second core-pulling block correspond to the shape of the inner side wall of the inner container of the refrigerator.

(III) advantageous effects

The embodiment of the invention provides a vacuum plastic sucking and demolding mechanism for a refrigerator liner. The method has the following beneficial effects: the demoulding mode can ensure that the demoulding mechanism or the sliding block does not need to be embedded into the inner wall of the workpiece to drive the workpiece to move, so that the aesthetic feeling of the appearance of the workpiece can be obviously improved, and in addition, the demoulding force can be obviously improved by using the ejection method of the connecting rod and the ejection block, so that the demoulding effect is better, and the core pulling effect is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a vacuum plastic-absorbing and demolding mechanism for a refrigerator liner in the invention;

FIG. 2 is a schematic view of the installation of the slider of the present invention;

fig. 3 is a schematic structural view of the top block of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, the invention provides a vacuum plastic sucking and demolding mechanism for a refrigerator liner, which comprises an air cylinder 1 arranged on a mold frame 0, wherein a sliding block 2 is arranged at the end of a piston shaft of the air cylinder 1, core-pulling blocks 3 are symmetrically arranged on two sides of the sliding block 2, the core-pulling blocks 3 are connected to the sliding block 2 in a sliding manner, a connecting rod 5 is hinged to the inner side wall of each core-pulling block 3, the connecting rod 5 is hinged to a connecting block 6, the connecting block 6 is arranged in a sliding groove of an ejector block 7, the ejector block is connected with the connecting block 6 through a rolling shaft 8, a waist-shaped groove 9 for sliding of the rolling shaft 8 is arranged on the ejector block 7, the sliding block 2 is a conical sliding.

When the mold is drawn, the cylinder 1 is controlled to extend downwards, the sliding block 2 drives the core-pulling blocks 3 on two sides to move, the core-pulling blocks 3 are withdrawn from a workpiece, the connecting rod 5 is driven to move downwards, the connecting block 6 moves downwards, and when the two sides moving downwards to the core-pulling blocks 3 are completely withdrawn from the workpiece, the jacking blocks 7 are driven to jack up the workpiece for demolding, so that the workpiece demolding operation is completed.

Preferably, the inner side wall of the core pulling block 3 is provided with a sliding chute 10 for the sliding of the sliding block 2, and the cross section of the sliding chute 10 is isosceles trapezoid, so that the sliding force is uniform, the limiting effect of the sliding chute 10 is good, and the demolding is stable; the front end of the core-pulling block 3 is provided with a limiting groove 11 for limiting the top block 7, the cross section of the limiting groove 11 is rectangular, and one end of the top block 7 is inserted into the limiting groove 11, so that the top block 7 can be conveniently ejected out of a workpiece; connecting rod 5 mounting seats 12 are symmetrically arranged on two sides of the top block 7, the connecting rods are hinged in the connecting rod mounting seats 12, and the hinged positions of the connecting rods on the two sides are connected with each other to form an isosceles trapezoid structure, so that the demolding force is stable, and the stress of a workpiece is uniform during demolding; the core-pulling block 3 comprises a first core-pulling block 31 and a second core-pulling block 32, the first core-pulling block 31 is arranged on the second core-pulling block 32, and the shapes of the first core-pulling block 31 and the second core-pulling block 32 correspond to the shape of the inner side wall of the refrigerator inner container, so that the sizes of the first core-pulling block and the second core-pulling block can be replaced timely, and the core-pulling operation of the refrigerator inner containers with different sizes can be realized.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a refrigerator inner bag vacuum plastic uptake demoulding mechanism which characterized in that: comprises a cylinder arranged on a die frame, a slide block is arranged at the end of a piston shaft of the cylinder, core-pulling blocks are symmetrically arranged at the two sides of the slide block, the core-pulling block is connected on the sliding block in a sliding way, the inner side wall of the core-pulling block is hinged with a connecting rod, the tail end of the connecting rod is provided with a connecting block, the connecting block is arranged in the sliding groove of the top block, the top block is connected with the connecting block through a rolling shaft, and the top block is provided with a waist-shaped groove for the sliding of the rolling shaft, the sliding block is a conical sliding block, the inner side surface of the core-pulling block is matched with the conical surface, connecting rod mounting seats are symmetrically arranged on two sides of the top block, the connecting rods are hinged in the connecting rod mounting seats, the hinged positions of the connecting rods on the two sides are mutually connected to form an isosceles trapezoid structure, the inner side wall of the core-pulling block is provided with a sliding chute for sliding the sliding block, and the cross section of the sliding chute is in an isosceles trapezoid shape.

2. The vacuum plastic sucking and demolding mechanism for the refrigerator inner container as claimed in claim 1, wherein: the front end of the core-pulling block is provided with a limiting groove used for limiting the top block, the cross section of the limiting groove is rectangular, and one end of the top block is inserted into the limiting groove.

3. The vacuum plastic sucking and demolding mechanism for the refrigerator inner container as claimed in claim 1, wherein: the core-pulling block comprises a first core-pulling block and a second core-pulling block, the first core-pulling block is arranged on the second core-pulling block, and the shapes of the first core-pulling block and the second core-pulling block correspond to the shape of the inner side wall of the inner container of the refrigerator.