Injection blow molding machine convenient for unloading and working method thereof

Abstract

The present invention belongs to the technical field of plastic processing, and in particular to an injection-blowing machine and a working method thereof which are convenient for unloading; the present invention provides an injection-blowing machine which is convenient for unloading, comprising: an injection-blowing machine which is rotatably provided with a turret; a demoulding device which is slidably provided on the injection-blowing machine and is parallel to a conveyor belt; a fixing assembly which is lifted and lowered on the demoulding device and is suitable for limiting the position of a workpiece; wherein the turret rotates circumferentially to move the molded workpiece to the demoulding device; the fixing assembly blows air outward to cool the workpiece until the workpiece is placed on the fixing assembly; the fixing assembly is squeezed by the workpiece and moves downward until the workpiece is negatively pressured by the demoulding device; the demoulding device drives the fixing assembly to flip in the direction of the conveyor belt to vertically place the workpiece on the conveyor belt; through the cooperation between the demoulding device and the fixing assembly, the cooling and solidification of the workpiece is accelerated, and the stability of the workpiece during the flipping process is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic processing, and specifically relates to taking out a blown part from a model, and more particularly to an injection-blow molding machine which is convenient for unloading and a working method thereof. Background Art

[0002] For packaging bottles made of plastic materials, especially those with a narrower mouth than the belly and a longer neck; the injection blow molding machine needs to go through injection molding, blow molding and demoulding during the production of packaging bottles. In order to improve work efficiency, multi-station injection blow molding machines are often used.

[0003] When the injection blow machine moves the blow-molded bottles to the demoulding device, due to the different ambient temperatures during production, especially in summer when the outside temperature is high, the blow-molded bottles have not yet completely cooled and solidified. In the process of the injection blow machine's turret driving the bottles to move to the demoulding device, the bottom of the outer wall of the bottles will be squeezed by the demoulding device and deformed.

[0004] When the demoulding device flips the packaging bottle and moves it toward the conveyor belt, the packaging bottle may be placed unstably on the demoulding device, resulting in the packaging bottle being unable to stand upright on the conveyor belt.

[0005] Therefore, how to solve the technical problem of insufficient stability of the packaging bottle placed on the demoulding device is a technical problem that urgently needs to be solved in the field.

[0006] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0007] The embodiments of the present disclosure at least provide an injection-blow molding machine and a working method thereof that are convenient for material unloading.

[0008] In a first aspect, an embodiment of the present disclosure provides an injection-blow molding machine that facilitates material unloading, comprising:

[0009] The injection-blowing machine is rotatably provided with a turret;

[0010] A demoulding device is slidably arranged on the injection blow molding machine and is parallel to the conveyor belt;

[0011] A fixing component, which is lifted and arranged on the demoulding device, and is suitable for blowing air or vacuuming air to the workpiece, and is suitable for limiting the position of the workpiece;

[0012] Among them, the turret rotates circumferentially to move the formed workpiece to the demoulding device;

[0013] The fixing assembly blows air outward to cool the workpiece until the workpiece is placed on the fixing assembly;

[0014] The fixed component is squeezed by the workpiece and moves downward until the workpiece is sucked by the negative pressure of the demoulding device;

[0015] The demoulding device drives the fixed assembly to flip toward the conveyor belt to place the workpiece vertically on the conveyor belt.

[0016] In an optional embodiment, the demoulding device includes: a driving cylinder, which is arranged at the injection blow molding machine facing the conveyor belt;

[0017] A supporting base is vertically fixed to the movable end of the driving cylinder and is parallel to the conveyor belt;

[0018] A turning motor is arranged on the supporting base;

[0019] A fixing plate, which is arranged at the end of the rotating shaft of the flip motor and is suitable for supporting the fixing assembly;

[0020] Wherein, the driving cylinder is suitable for driving the supporting base to move horizontally in the direction of the conveyor belt;

[0021] The turning motor is suitable for driving the fixed plate to turn it toward the conveyor belt direction.

[0022] In an optional embodiment, a plurality of accommodating grooves adapted to the fixing components are formed at equal intervals on the fixing plate, and the fixing components are lifted and lowered in the accommodating grooves.

[0023] In an optional embodiment, a limiting groove is provided on the fixing plate at a position corresponding to the receiving groove, and the limiting groove is in contact with the outer wall of the workpiece;

[0024] An air pipe is arranged on one side of the fixing plate and is communicated with the fixing assembly.

[0025] The fixing assembly moves vertically downward until the outer wall of the workpiece abuts against the limiting groove, and the limiting groove is suitable for limiting the workpiece.

[0026] In an optional embodiment, a plurality of first air holes are formed on the limiting groove, and the first air holes are connected to the air pipe;

[0027] The outer wall of the workpiece abuts against the limiting groove, and the first air hole performs negative pressure suction to limit the workpiece.

[0028] In an optional embodiment, the fixing plate is symmetrically provided with two cutting edges near the accommodating groove, and when the fixing assembly moves vertically downward, the cutting edges are suitable for cutting off excess burrs on the outer wall of the workpiece.

[0029] In an optional embodiment, the fixing assembly includes: a fixing block, which is provided with a groove adapted to the workpiece and is lifted and lowered in the receiving groove;

[0030] A spring, two ends of which are respectively fixed to the bottom wall of the fixing block and the inner bottom wall of the receiving groove;

[0031] The limiting strips are arranged on the two side walls of the fixed block, and the fixed plate is provided with sliding grooves matched with the limiting strips.

[0032] In an optional embodiment, a plurality of second air holes are formed on the fixing block, an air inlet connected to the second air holes is formed on the bottom side wall of the limiting strip, and the air inlet is connected to the air pipe.

[0033] In an optional embodiment, an air passage connected to the air pipe is formed on the inner side wall of the slide groove, and the slot height of the air passage is greater than the slot height of the air inlet.

[0034] In an optional embodiment, the demoulding device is slidably arranged on the injection blow molding machine;

[0035] A fixing assembly, the lifting and lowering of which is arranged on the demoulding device;

[0036] The demoulding device comprises: a support base, which is slidably arranged on an internal fixed plate of the injection-blow molding machine, which is hinged on the support base and is provided with a receiving groove adapted to the fixed assembly;

[0037] Among them, after the workpiece moves to the top of the receiving groove, the fixed component blows air outward to cool the workpiece;

[0038] The fixing assembly comprises: a fixing block, which is provided with a groove adapted to the workpiece and is lifted and lowered in the receiving groove;

[0039] A spring, two ends of which are respectively fixed to the bottom wall of the fixing block and the inner bottom wall of the receiving groove;

[0040] The fixed block is squeezed by the workpiece and moves downward until the workpiece is adsorbed by the negative pressure of the fixed plate;

[0041] The driving cylinder drives the fixed plate to flip toward the conveyor belt, and the fixed block is suitable for vertically placing the workpiece on the conveyor belt.

[0042] In a second aspect, the present disclosure also provides a blanking method, comprising:

[0043] The turret rotates circumferentially to move the formed workpiece to the demoulding device;

[0044] After the workpiece moves to above the receiving slot, the fixed component blows air outward to cool the workpiece;

[0045] The fixed block is squeezed by the workpiece and moves downward until the workpiece is adsorbed by the negative pressure of the fixed plate;

[0046] The driving cylinder drives the fixed plate to flip toward the conveyor belt, and the fixed block is suitable for vertically placing the workpiece on the conveyor belt.

[0047] The beneficial effect of the present invention is that the present invention is an injection-blow molding machine and a working method thereof that are convenient for unloading. Through the cooperation between the demoulding device and the fixed component, after the molded workpiece moves to the top of the demoulding device, the fixed component blows air to the workpiece to cool the workpiece and accelerate its solidification; the turret drives the workpiece to move downward, and the workpiece squeezes the fixed component to move downward synchronously, and the cutting edge can remove the excess burrs on the outer wall of the workpiece. After the workpiece abuts against the limit groove, the air pipe negatively draws the first air hole and the second air hole to absorb the workpiece with negative pressure to prevent it from falling when the fixed plate flips toward the conveyor belt direction, thereby improving the stability of the workpiece during demoulding.

[0048] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0049] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 A three-dimensional diagram of an injection-blow molding machine that facilitates material unloading provided by an embodiment of the present disclosure;

[0052] Figure 2 A three-dimensional diagram of a demoulding device provided in an embodiment of the present disclosure;

[0053] Figure 3 A three-dimensional diagram of a fixing assembly and a fixing plate provided for an embodiment of the present disclosure;

[0054] Figure 4 A schematic diagram of the unfolded state of the fixing assembly and the fixing plate provided in the embodiment of the present disclosure;

[0055] Figure 5 A perspective view of a fixing assembly provided for an embodiment of the present disclosure;

[0056] Figure 6 A cross-sectional perspective view of a fixing assembly and a fixing plate provided for an embodiment of the present disclosure;

[0057] Figure 7A three-dimensional diagram of a fixing block provided in an embodiment of the present disclosure being squeezed into a receiving groove.

[0058] In the figure:

[0059] 1. Injection blowing machine; 10. Turret;

[0060] 2. demoulding device; 21. driving cylinder; 22. supporting base; 23. turning motor; 24. fixing plate; 25. containing groove; 26. limiting groove; 27. air pipe; 28. first air hole; 29. ​​cutting edge;

[0061] 3. Fixing assembly; 31. Fixing block; 32. Spring; 33. Limiting strip; 34. Second air hole; 35. Air inlet; 36. Airway. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0063] In this article, when it is mentioned that the first component is located on the second component, this may mean that the first component may be directly formed on the second component, or the third component may be interposed between the first component and the second component. In addition, in the drawings, in order to effectively describe the technical content, the thickness of the components may be exaggerated or reduced.

[0064] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." modify the entire list of elements when following a list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0065] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limited. As used herein, the singular articles "one", "an" and "the" may also be intended to include plural forms, unless it is clearly indicated above that this is not the case. The terms "comprise", "include" and "have" are inclusive, and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0066] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0067] Research has found the following shortcomings of the prior art: when the injection blow machine moves the blow-molded bottles to the demolding device, due to the different ambient temperatures during production, especially in summer when the outside temperature is high, the blow-molded bottles have not yet been completely cooled and solidified. In the process of the turret of the injection blow machine driving the bottles to move to the demolding device, the bottom of the outer wall of the bottles will be squeezed by the demolding device and deformed.

[0068] When the demoulding device flips the packaging bottle and moves it toward the conveyor belt, the packaging bottle may be placed unstably on the demoulding device, resulting in the packaging bottle being unable to stand upright on the conveyor belt.

[0069] The defects existing in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present invention in this article for the above problems should be the contributions made by the inventor to the present invention during the disclosure process.

[0070] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0071] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0072] like Figures 1 to 7 As shown, some embodiments provide an injection blow molding machine that is convenient for unloading, including: an injection blow molding machine 1, which is rotatably provided with a turret 10; the turret 10 is suitable for driving the workpiece after molding to rotate circumferentially, and when the workpiece moves to the top of the demoulding device 2, the turret 10 is suitable for driving the workpiece to move downward. The demoulding device 2 is slidably arranged on the injection blow molding machine 1 and is parallel to the conveyor belt; the fixed component 3 is lifted and arranged on the demoulding device 2, and the fixed component 3 is suitable for blowing air or vacuuming air to the workpiece, and is suitable for limiting the position of the workpiece; wherein the turret 10 rotates circumferentially to move the molded workpiece to the demoulding device 2; the fixed component 3 blows air outward to cool the workpiece until the workpiece is placed on the fixed component 3; the fixed component 3 is squeezed downward by the workpiece until the workpiece is negatively adsorbed by the demoulding device 2; the demoulding device 2 drives the fixed component 3 to flip in the direction of the conveyor belt to place the workpiece vertically on the conveyor belt. Through the cooperation between the demoulding device 2 and the fixing assembly 3, after the molded workpiece moves to the top of the demoulding device 2, the fixing assembly 3 blows air to the workpiece to cool the workpiece and accelerate its solidification; the turret 10 drives the workpiece to move downward, and the workpiece squeezes the fixing assembly 3 to move downward synchronously, and the cutting edge 29 can remove the excess burrs on the outer wall of the workpiece. After the workpiece abuts against the limiting groove 26, the air pipe 27 sucks the first air hole 28 and the second air hole 34 with negative pressure, and absorbs the workpiece with negative pressure to prevent it from falling when the fixing plate 24 flips toward the conveyor belt direction, thereby improving the stability of the workpiece during demoulding.

[0073] Reference Figure 2 The demoulding device 2 includes: a driving cylinder 21, which is arranged at the position of the injection blow molding machine 1 facing the conveyor belt; a supporting base 22, which is vertically fixed at the movable end of the driving cylinder 21 and is parallel to the conveyor belt; the driving cylinder 21 is suitable for driving the supporting base 22 to approach or move away from the conveyor belt, and the conveyor belt is arranged on one side of the injection blow molding machine 1. A flip motor 23, which is arranged on the supporting base 22; a fixed plate 24, which is arranged at the end of the rotating shaft of the flip motor 23 and is suitable for supporting the fixed component 3. Among them, the driving cylinder 21 is suitable for driving the supporting base 22 to move horizontally in the direction of the conveyor belt; the flip motor 23 is suitable for driving the fixed plate 24 to flip it in the direction of the conveyor belt. The flip motor 23 is suitable for driving the fixed plate 24 to flip it relative to the supporting base 22. After the driving cylinder 21 drives the supporting base 22 to move in the direction of the conveyor belt, the flip motor 23 drives the fixed plate 24 to flip downward to place the workpiece vertically on the conveyor belt.

[0074] Reference Figure 3, the fixing plate 24 is provided with a plurality of receiving grooves 25 which are adapted to the fixing assembly 3 at equal intervals, and one receiving groove 25 corresponds to an injection molding core rod on the side wall of the turret 10. After the workpiece is injection molded, the turret 10 drives the workpiece to move toward the fixing plate 24 until the workpiece is located directly above the receiving groove 25. The first air hole 28 and the second air hole 34 blow air outward to accelerate the cooling of the workpiece, and avoid the extrusion deformation of the fixed block 31 caused by the workpiece not being completely cooled and solidified. The fixing assembly 3 is lifted and lowered in the receiving groove 25. The fixing plate 24 is provided with a limiting groove 26 corresponding to the receiving groove 25, and the limiting groove 26 is in contact with the outer wall of the workpiece. The limiting groove 26 is provided with a plurality of first air holes 28, and the first air holes 28 are connected to the air pipe 27; wherein, the fixing assembly 3 moves vertically downward until the outer wall of the workpiece abuts against the limiting groove 26, and the limiting groove 26 is suitable for limiting the workpiece. The turret 10 drives the workpiece to move downward, and the workpiece squeezes the fixing assembly 3 to move downward synchronously until the outer wall of the workpiece abuts against the limiting groove 26. An air pipe 27 is provided on one side of the fixing plate 24, which is connected to the fixing assembly 3. The air pipe 27 is connected to the air pump, and the air pump sucks the air pipe 27 under negative pressure. The first air hole 28 is suitable for negative pressure adsorption of the workpiece to improve the contact stability between the workpiece and the fixing plate 24. Among them, the outer wall of the workpiece abuts against the limiting groove 26, and the first air hole 28 sucks under negative pressure to limit the workpiece to prevent the workpiece from falling out of the limiting groove 26.

[0075] Reference Figure 3 The fixing plate 24 is symmetrically provided with two cutting edges 29 near the receiving groove 25. The workpiece squeezes the fixing assembly 3 and moves vertically downward until the fixing assembly 3 is retracted into the receiving groove 25. The cutting edges 29 are suitable for cutting off excess burrs on the outer wall of the workpiece.

[0076] Reference Figure 5The fixing assembly 3 includes: a fixing block 31, which is provided with a groove adapted to the workpiece, the outer wall of the workpiece is adapted to fit with the inner wall of the groove, and the lifting and lowering is arranged in the receiving groove 25; a spring 32, the two ends of which are respectively fixed on the bottom wall of the fixing block 31 and the inner bottom wall of the receiving groove 25; the elastic force of the spring 32 is relatively small, and when the air pipe 27 is sucked under negative pressure, the adsorption force of the first air hole 28 on the workpiece is greater than the reverse elastic force of the spring 32 on the fixing block 31; and when the fixing plate 24 is driven by the flip motor 23 to flip in the direction of the conveyor belt, until the bottom wall of the workpiece contacts the conveyor belt, at this time, the air pump stops working, and the elastic force of the spring 32 is suitable for pushing the workpiece to make it detach from the groove and the limit groove 26; the thrust of the spring 32 on the workpiece is relatively small, and will not cause the workpiece to shake when it moves toward the conveyor belt. In order to improve the stability of the fixing block 31 when it is lifted and lowered relative to the fixing plate 24, the limit strip 33 is arranged on the two side walls of the fixing block 31, and the fixing plate 24 is provided with a slide groove adapted to the limit strip 33. The fixing block 31 is pressed downward by the workpiece, and the limiting strip 33 cooperates with the groove to prevent the fixing block 31 from shaking relative to the receiving groove 25 .

[0077] Reference Figure 5 , the fixed block 31 is provided with a plurality of second air holes 34, and the bottom side wall of the limit strip 33 is provided with an air inlet 35 connected with the second air holes 34, and the air inlet 35 is connected with the air pipe 27. The inner side wall of the slide groove is provided with an air channel 36 connected with the air pipe 27, and the slot height of the air channel 36 is greater than the slot height of the air inlet 35. After the turret 10 drives the workpiece to move above the fixed plate 24, the air pipe 27 delivers compressed air to the first air hole 28 and the second air hole 34, and the compressed air is suitable for cooling the workpiece; the turret 10 drives the workpiece to move downward, and the workpiece squeezes the fixed block 31 to move it downward. When the fixed block 31 is retracted into the receiving groove 25, the cutting edge 29 is suitable for scraping off the burrs on the outer wall of the workpiece. Until the outer wall of the workpiece abuts against the limiting groove 26, at this time, the air pump negatively sucks the first air hole 28 and the second air hole 34, and the first air hole 28 and the second air hole 34 that are in contact with the outer wall of the workpiece are suitable for negative pressure adsorption of the workpiece to prevent the workpiece from escaping from the limiting groove 26. After the injection molding mandrel on the side wall of the turret 10 is detached from the workpiece, the driving cylinder 21 drives the fixed plate 24 to move in the direction of the conveyor belt, and the flip motor 23 drives the fixed plate 24 to flip synchronously in the direction of the conveyor belt, and the workpiece changes from a horizontal state to a vertical state, the air pump stops working, and the spring 32 is suitable for pushing the workpiece to make it detach from the fixed block 31.

[0078] Some embodiments provide an injection-blowing machine that is easy to unload, including: a demolding device 2, which is slidably arranged on the injection-blowing machine 1; a fixing component 3, which is lifted and lowered on the demolding device 2; the demolding device 2 includes: a supporting base 22, which is slidably arranged inside the injection-blowing machine 1; a fixing plate 24, which is hinged on the supporting base 22 and is provided with a receiving groove 25 adapted to the fixing component 3; wherein, after the workpiece moves above the receiving groove 25, the fixing component 3 blows air outward to cool the workpiece; the fixing component 3 includes: a fixing block 31, which is provided with a groove adapted to the workpiece and is lifted and lowered in the receiving groove 25; a spring 32, whose two ends are respectively fixed on the bottom wall of the fixing block 31 and the inner bottom wall of the receiving groove 25; wherein the fixing block 31 is squeezed downward by the workpiece until the workpiece is negatively pressured by the fixing plate 24; the driving cylinder 21 drives the fixing plate 24 to flip toward the conveyor belt direction, and the fixing block 31 is suitable for placing the workpiece vertically on the conveyor belt.

[0079] Some embodiments provide a method for blanking, comprising:

[0080] The turret 10 rotates circumferentially to move the molded workpiece to the demoulding device 2;

[0081] After the workpiece moves to above the receiving groove 25, the fixing assembly 3 blows air outward to cool the workpiece;

[0082] The fixed block 31 is pressed by the workpiece and moves downward until the workpiece is adsorbed by the negative pressure of the fixed plate 24;

[0083] The driving cylinder 21 drives the fixing plate 24 to flip toward the conveyor belt, and the fixing block 31 is suitable for vertically placing the workpiece on the conveyor belt.

[0084] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0085] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0086] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An injection blow molding machine that is easy to unload, characterized in that: include: The injection-blow molding machine (1) has a turret (10) rotatably disposed therein; A demoulding device (2) which is slidably arranged on a side wall of the injection-blow molding machine (1) and is parallel to the conveyor belt; A fixing component (3) which is arranged on the demoulding device (2) in a lifting manner, and is suitable for blowing air or vacuuming air at the workpiece, and is suitable for limiting the position of the workpiece; The turret (10) rotates circumferentially to move the formed workpiece to the demoulding device (2); The fixing component (3) blows air outward to cool the workpiece so that the workpiece is placed on the fixing component (3); The fixing component (3) is pressed downward by the workpiece, so that the workpiece is sucked by the demoulding device (2) under negative pressure; The demoulding device (2) drives the fixing component (3) to flip in the direction of the conveyor belt, so as to place the workpiece vertically on the conveyor belt; The demoulding device (2) comprises: a driving cylinder (21) which is arranged at a position of the injection-blow molding machine (1) facing the conveyor belt; A support base (22) is vertically fixed to the movable end of the driving cylinder (21) and is parallel to the conveyor belt; A turning motor (23), which is arranged on the supporting base (22); A fixing plate (24), which is arranged at the end of the rotating shaft of the flip motor (23) and is suitable for supporting the fixing assembly (3); The driving cylinder (21) is suitable for driving the supporting base (22) to move horizontally in the direction of the conveyor belt; The turning motor (23) is suitable for driving the fixing plate (24) to turn it in the direction of the conveyor belt; The fixing plate (24) is provided with a plurality of accommodating grooves (25) which are compatible with the fixing assembly (3) at equal intervals, and the fixing assembly (3) is lifted and lowered in the accommodating grooves (25).

2. The injection blow molding machine for easy material discharge according to claim 1, characterized in that: A limiting groove (26) is provided on the fixing plate (24) at a position corresponding to the receiving groove (25), and the limiting groove (26) is in contact with the outer wall of the workpiece; An air pipe (27) is provided on one side of the fixing plate (24), and the air pipe (27) is in communication with the fixing assembly (3); The fixing assembly (3) moves vertically downwards, so that the outer wall of the workpiece abuts against the limiting groove (26), and the limiting groove (26) is suitable for limiting the workpiece.

3. The injection blow molding machine for easy material discharge according to claim 2, characterized in that: The limiting groove (26) is provided with a plurality of first air holes (28), and the first air holes (28) are in communication with the air pipe (27); The outer wall of the workpiece abuts against the limiting groove (26), and the first air hole (28) performs negative pressure suction to limit the workpiece.

4. The injection blow molding machine for easy material discharge according to claim 1, characterized in that: The fixing plate (24) is symmetrically provided with two cutting edges (29) near the receiving groove (25); when the fixing assembly (3) moves vertically downward, the cutting edges (29) contact the outer wall of the workpiece to scrape off the burrs.

5. The injection blow molding machine for easy material discharge according to claim 1, characterized in that: The fixing assembly (3) comprises: a fixing block (31) having a groove adapted to the peripheral wall of the workpiece and being arranged in a lifting manner in the receiving groove (25); A spring (32), two ends of which are respectively in contact with the bottom wall of the fixing block (31) and the inner bottom wall of the receiving groove (25); Limiting strips (33) arranged on two side walls of the fixing block (31); The fixing plate (24) is provided with a sliding groove adapted to the limiting strip (33).

6. The injection blow molding machine for easy material discharge according to claim 5, characterized in that: The fixing block (31) is provided with a plurality of second air holes (34), the bottom side wall of the limiting strip (33) is provided with an air inlet (35) in communication with the second air holes (34), and the air inlet (35) is in communication with the air pipe (27).

7. The injection blow molding machine for easy material discharge according to claim 6, characterized in that: An air passage (36) communicating with the air pipe (27) is formed on the inner side wall of the slide groove, and the slot height of the air passage (36) is greater than the slot height of the air inlet (35).

8. An injection blow molding machine that is easy to unload, characterized in that: A demoulding device (2) which is slidably arranged on the injection blow molding machine (1); A fixing assembly (3) which is arranged to be lifted and lowered on the demoulding device (2); The demoulding device (2) comprises: a support base (22) which is slidably arranged inside the injection blow molding machine (1); A fixing plate (24) which is hinged on the supporting base (22) and is provided with a receiving groove (25) adapted to the fixing assembly (3); After the workpiece moves to above the receiving groove (25), the fixing component (3) blows air outward to cool the workpiece; The fixing assembly (3) comprises: a fixing block (31) having a groove adapted to the workpiece and being arranged in a lifting manner in the receiving groove (25); A spring (32), two ends of which are respectively fixed to the bottom wall of the fixing block (31) and the inner bottom wall of the receiving groove (25); The fixed block (31) is pressed by the workpiece and moves downward until the workpiece is adsorbed by the negative pressure of the fixed plate (24); The driving cylinder (21) drives the fixing plate (24) to flip in the direction of the conveyor belt, and the fixing block (31) is suitable for vertically placing the workpiece on the conveyor belt.

9. A material cutting method, characterized in that: The injection blow molding machine for easy material discharge as claimed in any one of claims 1 to 7 or 8 comprises: The turret (10) rotates circumferentially to move the molded workpiece to the demoulding device (2); After the workpiece moves to above the receiving groove (25), the fixing component (3) blows air outward to cool the workpiece; The fixed block (31) is pressed by the workpiece and moves downward until the workpiece is adsorbed by the negative pressure of the fixed plate (24); The driving cylinder (21) drives the fixing plate (24) to flip in the direction of the conveyor belt, and the fixing block (31) is suitable for vertically placing the workpiece on the conveyor belt.

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