Stable injection blow molding machine and working method thereof

Abstract

The present invention belongs to the field of plastic processing technology, and in particular to a stable injection blow machine and a working method thereof. The present invention provides a stable injection blow machine, comprising: an injection blow machine, on which at least a lower bottom mold is arranged; an extruder, which is slidably arranged on one side of the injection blow machine, and an injection head is arranged at the end; a plurality of adjustment and protection mechanisms, which are slidably arranged on the outer wall of the injection head and are suitable for sealing the injection head; wherein the extruder moves in the direction of the lower bottom mold until the adjustment and protection mechanism abuts against the lower bottom mold, and the injection head continues to move horizontally, and the adjustment and protection mechanism is suitable for turning outward relative to the injection head; during the turning process, the adjustment and protection mechanism is suitable for negative pressure absorption of the raw material inside the injection head to smear it on the outer wall of the injection head; by setting the adjustment and protection mechanism, not only can the injection head be prevented from being contaminated by impurities, but also the raw material in the injection head can be prevented from overflowing outward.

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 a stable injection-blow machine and a working method thereof. Background Art

[0002] The injection blow molding machine integrates the functions of injection molding and blow molding, and performs the operations synchronously through a turret and the injection mold, blow mold and demoulding assembly arranged around the turret, thereby improving production efficiency. In the related art, a feeding extruder is slidably arranged on one side of the injection blow molding machine, and the feeding extruder delivers molten material into a lower bottom mold of the injection blow molding machine.

[0003] When replacing the mold of the injection blow molding machine, the discharge head of the feeding extruder needs to be separated from the lower bottom mold; during the separation of the discharge head from the lower bottom mold, the material inside the discharge head will adhere to the lower bottom mold and appear to be drawn; moreover, after the discharge head is detached from the lower bottom mold, the material in the discharge head will overflow and drip outward, resulting in material waste.

[0004] The discharge head is exposed to the air, and dust and impurities will enter the inside of the discharge head and contaminate the raw materials.

[0005] Therefore, how to avoid overflow and contamination after the discharge head is separated from the lower bottom mold is a technical problem that urgently needs to be solved in this 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 a stable injection blow molding machine and a working method thereof.

[0008] In a first aspect, an embodiment of the present disclosure provides a stable injection blow molding machine, comprising:

[0009] The injection blow molding machine is provided with at least a bottom mold;

[0010] An extruder is slidably arranged on one side of the injection blow molding machine and has an injection head at the end thereof;

[0011] A plurality of adjusting and protecting mechanisms are slidably arranged on the outer wall of the injection head and are suitable for closing the injection head;

[0012] The extruder moves toward the lower bottom mold until the adjusting and protecting mechanism abuts against the lower bottom mold, and the injection head continues to move horizontally, and the adjusting and protecting mechanism is adapted to be turned outward relative to the injection head;

[0013] The regulating and protecting mechanism is adapted to absorb the raw material inside the injection head by negative pressure during the turning process so as to smear the raw material on the outer wall of the injection head.

[0014] In an optional embodiment, the adjustment protection mechanism includes: a connecting rod, which is parallel to the injection head and is slidably arranged at the end of the extruder;

[0015] A protective sheet, one end of which is hinged to the end of the connecting rod, and the inner wall of the other end is suitable for abutting against the end wall of the injection head;

[0016] Wherein, after the protection sheet abuts against the lower bottom mold, the injection head continues to move toward the lower bottom mold, and the protection sheet is suitable for turning outward.

[0017] In an optional embodiment, the protection sheet is arc-shaped, and the side walls of adjacent protection sheets abut against each other to close the discharge hole of the injection head.

[0018] In an optional embodiment, the outer wall of the protection sheet is provided with a positioning portion, and the positioning portion extends axially along the injection head;

[0019] The positioning portion is provided with a connecting air pipe which is communicated with the air pump.

[0020] In an optional embodiment, a flow channel is provided inside one end of the protection sheet close to the positioning portion, which is connected to the connecting air pipe, and the air outlet of the flow channel faces the discharge hole of the injection head.

[0021] In an optional embodiment, a limiting groove adapted to the connecting rod is provided at one end of the extruder close to the injection head, a spring is arranged in the limiting groove, one end of the spring is fixed to the end wall of the connecting rod, and the spring is suitable for pushing the connecting rod to slide outward.

[0022] In an optional embodiment, the outer wall of the connecting rod is provided with an elastic sheet which is in an "L" shape, and one end of which abuts against the outer wall of the protective sheet;

[0023] When the protection sheet is limited and turned outward by the lower bottom mold, the protection sheet is suitable for pushing the elastic sheet to deform.

[0024] In an optional embodiment, the regulating and protecting mechanism further comprises a heating plate, which is arranged on the outer wall of the protecting plate and is electrically connected to the power supply, and the heating plate is suitable for heating the protecting plate.

[0025] In an optional embodiment, the side wall of the lower bottom mold is provided with an injection hole, and the injection head is suitable for being inserted into the injection hole;

[0026] When the injection head is inserted into the injection hole and the protection sheet is turned outward relative to the injection head, the material is sprayed onto the outer wall of the injection head to seal the gap between the injection head and the injection hole.

[0027] In an optional embodiment, a support frame is provided on one side of the injection-blow molding machine, and an adjusting cylinder is horizontally provided on the support frame;

[0028] Two guide rails are arranged in parallel on the support frame, and the extruder sliding sleeve is arranged on the guide rails;

[0029] The regulating cylinder is suitable for driving the extruder to move horizontally.

[0030] In an optional embodiment, the extruder is slidably arranged on one side of the injection blow molding machine, and an injection head is arranged at the discharge end;

[0031] A plurality of adjusting and protecting mechanisms are slidably arranged on the outer wall of the injection head and are suitable for closing the injection head;

[0032] Wherein, the extruder moves horizontally, and after the adjusting and protecting mechanism is limited, the injection head continues to move horizontally, and the adjusting and protecting mechanism is adapted to be turned outward relative to the injection head;

[0033] The regulating and protecting mechanism is adapted to absorb the raw material inside the injection head by negative pressure during the turning process so as to smear the raw material on the outer wall of the injection head.

[0034] In a second aspect, the present disclosure also provides a method for injecting material, including:

[0035] If the extruder does not move in the direction of the injection blow molding machine, some of the regulating and protecting mechanisms are suitable for closing the injection head to prevent dust or impurities from contaminating the raw materials in the injection head;

[0036] The extruder does not move toward the injection blow molding machine until the adjusting and protecting mechanism abuts against the lower bottom mold, and the injection head continues to move horizontally, and the adjusting and protecting mechanism is adapted to be turned outward relative to the injection head;

[0037] The regulating and protecting mechanism is adapted to absorb the raw material inside the injection head by negative pressure during the turning process so as to smear the raw material on the outer wall of the injection head.

[0038] The beneficial effect of the present invention is that the stable injection blow molding machine of the present invention can close the injection head by setting the adjusting protection mechanism when the injection head is not in contact with the lower bottom mold, which can not only prevent the injection head from being contaminated by impurities, but also prevent the raw materials in the injection head from overflowing. In the process of inserting the injection head into the lower bottom mold, the adjusting protection mechanism is turned outward, which is suitable for negative pressure to absorb the raw materials inside the injection head to smear it on the outer wall of the injection head. This part of the raw materials can seal the gap between the injection head and the lower bottom mold to prevent part of the raw materials from overflowing from the gap between the injection head and the lower bottom mold when the injection head transports the molten raw materials into the lower bottom mold.

[0039] 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, claims and drawings.

[0040] 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

[0041] 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.

[0042] Figure 1 A perspective view of a stable injection blow molding machine provided by an embodiment of the present disclosure;

[0043] Figure 2 The embodiments of the present disclosure provide Figure 1 A partial enlarged view of A in FIG.

[0044] Figure 3 A three-dimensional diagram of an injection head and an adjustment and protection mechanism provided in an embodiment of the present disclosure;

[0045] Figure 4 A three-dimensional diagram of an adjustment and protection mechanism provided in an embodiment of the present disclosure;

[0046] Figure 5 A cutaway perspective view of an adjustment and protection mechanism provided in an embodiment of the present disclosure;

[0047] Figure 6 A schematic diagram of a state in which a protective sheet provided in an embodiment of the present disclosure closes an injection head;

[0048] Figure 7 This is a schematic diagram of the protective sheet in the turned-out state provided by an embodiment of the present disclosure.

[0049] In the figure:

[0050] 1. Injection blow molding machine; 10. Lower mold; 11. Injection hole; 12. Support frame; 13. Adjustment cylinder;

[0051] 2. Extruder; 20. Injection head;

[0052] 3. Adjusting and protecting mechanism; 31. Connecting rod; 32. Protective sheet; 33. Positioning part; 34. Connecting air pipe; 35. Flow channel; 36. Spring; 37. Elastic sheet; 38. Heating sheet. DETAILED DESCRIPTION

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] After research, it was found that the shortcomings of the prior art are as follows: when the injection blow molding machine replaces the mold, the discharge head of the feeding extruder needs to be separated from the lower bottom mold; during the separation of the discharge head from the lower bottom mold, the material inside the discharge head will adhere to the lower bottom mold and appear to be drawn; and after the discharge head is separated from the lower bottom mold, the material in the discharge head will overflow and drip outward, resulting in a waste of material. The discharge head is exposed to the air, and dust and impurities will enter the discharge head and contaminate the raw materials. Moreover, when the discharge head is inserted into the lower bottom mold, there will be a gap between its outer wall and the lower bottom mold, and when the discharge head transports the molten raw materials into the lower bottom mold, part of the raw materials will overflow from the gap, resulting in a waste of raw materials. Therefore, how to avoid the overflow and contamination after the discharge head is separated from the lower bottom mold is a technical problem that urgently needs to be solved in this field.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] like Figures 1 to 7As shown, some embodiments provide a stable injection blow molding machine, including: an injection blow molding machine 1, on which at least a lower bottom mold 10 is arranged; an extruder 2, which is slidably arranged on one side of the injection blow molding machine 1, and an injection head 20 is arranged at the end; the injection head 20 is adapted to the lower bottom mold 10, and is suitable for being inserted into the injection hole 11. After the injection head 20 is inserted into the injection hole 11, the extruder 2 will not move horizontally relative to the lower bottom mold 10. When a different lower bottom mold 10 needs to be replaced, the extruder 2 drives the injection head 20 to move horizontally in a direction away from the lower bottom mold 10. A plurality of adjusting and protecting mechanisms 3 are slidably arranged on the outer wall of the injection head 20 and are suitable for closing the injection head 20; the plurality of adjusting and protecting mechanisms 3 are arranged circumferentially around the injection head 20, and the two side walls of the plurality of protecting sheets 32 abut against each other to achieve the effect of closing the injection head 20; wherein, the extruder 2 moves toward the lower bottom mold 10 until the adjusting and protecting mechanisms 3 abut against the lower bottom mold 10, and the injection head 20 continues to move horizontally, and the adjusting and protecting mechanisms 3 are suitable for turning outward relative to the injection head 20; during the turning process, the adjusting and protecting mechanisms 3 are suitable for negative pressure absorption of the raw material inside the injection head 20 to smear it on the outer wall of the injection head 20. By setting the adjusting and protecting mechanisms 3, when the injection head 20 is not in contact with the lower bottom mold 10, the plurality of adjusting and protecting mechanisms 3 can close the injection head 20, which can not only prevent the injection head 20 from being contaminated by impurities, but also prevent the raw material in the injection head 20 from overflowing outward. While in the process of inserting the injection head 20 into the lower bottom mold 10 and adjusting the protective mechanism 3 to be everted outward, negative pressure is applied to absorb the raw material inside the injection head 20 to smear it on the outer wall of the injection head 20. This part of the raw material can seal the gap between the injection head 20 and the lower bottom mold 10 to prevent part of the raw material from overflowing from the gap between the injection head 20 and the lower bottom mold 10 when the injection head 20 transports the molten raw material into the lower bottom mold 10.

[0063] Reference Figure 3The adjusting protection mechanism 3 includes: a connecting rod 31, which is parallel to the injection head 20 and is slidably arranged at the end of the extruder 2; the injection head 20 moves horizontally toward the lower bottom mold 10 until the protection sheet 32 ​​abuts against the lower bottom mold 10, and the lower bottom mold 10 is suitable for pushing the protection sheet 32 ​​to make the connecting rod 31 shrink and move into the extruder 2. The protection sheet 32 ​​has one end hinged at the end of the connecting rod 31, and the inner wall of the other end is suitable for abutting against the end wall of the injection head 20; wherein, after the protection sheet 32 ​​abuts against the lower bottom mold 10, the injection head 20 continues to move toward the lower bottom mold 10, and the protection sheet 32 ​​is turned outward to expose the injection head 20. The protection sheet 32 ​​is arc-shaped, and the side walls of adjacent protection sheets 32 abut against each other when closed to close the discharge hole of the injection head 20. When the injection head 20 does not move toward the lower bottom mold 10, the two side walls of the protection sheet 32 ​​abut against each other. At this time, the inner side wall of the protection sheet 32 ​​abuts against the end wall of the injection head 20. Several protection sheets 32 are suitable for annularly protecting the injection head 20 to prevent dust or impurities in the air from entering the injection head 20 and contaminating the raw materials in the injection head 20. In the process of the injection head 20 being separated from the injection hole 11 of the lower bottom mold 10, each protection sheet 32 ​​gradually turns toward the injection head 20 until the two side walls of several protection sheets 32 abut against each other. At this time, the protection sheet 32 ​​can cut off the molten raw material overflowing from the end of the injection head 20, avoiding the raw material from forming a wire drawing state between the injection head 20 and the injection hole 11.

[0064] Reference Figure 4 The outer wall of the protection sheet 32 ​​is provided with a positioning portion 33, and the positioning portion 33 extends axially along the injection head 20; the positioning portion 33 is provided with a connecting air pipe 34, which is connected to the air pump. When the injection head 20 moves toward the lower bottom mold 10, the positioning portion 33 abuts against the side wall of the lower bottom mold 10 first, and as the injection head 20 continues to move horizontally toward the injection hole 11, the side wall of the lower bottom mold 10 is suitable for pushing the protection sheet 32 ​​to move horizontally toward the extruder 2. In the process of the protection sheet 32 ​​being squeezed and moved horizontally, the outer wall of the injection head 20 squeezes the protection sheet 32, so that the protection sheet 32 ​​is turned outward with the hinge point as the axis until the injection head 20 is inserted into the injection hole 11.

[0065] Reference Figure 5A flow channel 35 is provided inside one end of the protection sheet 32 ​​close to the positioning portion 33, which is connected to the connecting air pipe 34, and the air outlet of the flow channel 35 faces the discharge hole of the injection head 20. When each protection sheet 32 ​​closes the injection head 20, the air pump sucks the air in the flow channel 35 with negative pressure, so that the molten raw material at the inner end of the injection head 20 flows into the flow channel 35. When the protection sheet 32 ​​is pushed outward, the air pump delivers compressed air to the flow channel 35, so that the raw material in the flow channel 35 flows along the air outlet to the outer wall of the injection head 20, and a small amount of molten raw material is smeared on the outer wall of the injection head 20. After the injection head 20 is inserted into the injection hole 11, the molten raw material is suitable for sealing the gap between the injection head 20 and the injection hole 11, so as to prevent a small amount of raw material from overflowing from the gap during the process of the injection head 20 delivering materials to the lower bottom mold 10. When the extruder 2 intermittently delivers raw materials to the lower bottom mold 10, the air pump continues to deliver compressed air to the flow channel 35, and the compressed air is blown toward the raw materials in the gap between the injection head 20 and the injection hole 11 through the air outlet to accelerate the cooling and solidification of the raw materials in this area and prevent the raw materials from overflowing.

[0066] Reference Figure 4 The end of the extruder 2 close to the injection head 20 is provided with a limit groove adapted to the connecting rod 31, and a spring 36 is arranged in the limit groove, one end of the spring 36 is fixed to the end wall of the connecting rod 31, and the spring 36 is suitable for pushing the connecting rod 31 to slide outward. After the protective sheet 32 ​​is lowered by the lower bottom mold 10, it is suitable for squeezing the spring 36 to shrink and deform into the limit groove, and when the injection head 20 is separated from the lower bottom mold 10, the spring 36 is suitable for pushing the connecting rod 31, so that each protective sheet 32 ​​can seal the injection head 20.

[0067] Reference Figure 5 In order to facilitate the restoration and flipping of the protection sheet 32, an elastic sheet 37 is provided on the outer wall of the connecting rod 31, which is "L"-shaped and one end is in contact with the outer wall of the protection sheet 32; wherein, when the protection sheet 32 ​​is limited and flipped outward by the lower bottom mold 10, the protection sheet 32 ​​is suitable for pushing the elastic sheet 37 to deform.

[0068] Reference Figure 5 In order to ensure that the molten raw material in the flow channel 35 maintains fluidity, the regulating and protecting mechanism 3 further includes a heating plate 38, which is arranged on the outer wall of the protecting plate 32 and is electrically connected to the power supply, and the heating plate 38 is suitable for heating the protecting plate 32. After the raw material in the end of the injection head 20 is sucked into the flow channel 35 by negative pressure, the heating plate 38 heats the protecting plate 32, which can prevent the raw material from cooling and solidifying.

[0069] Reference Figure 2The side wall of the lower bottom mold 10 is provided with an injection hole 11, and the injection head 20 is suitable for being inserted into the injection hole 11; wherein, during the process of the injection head 20 being inserted into the injection hole 11, the protective sheet 32 ​​is turned outward relative to the injection head 20, and is suitable for spraying material onto the outer wall of the injection head 20 to seal the gap between the injection head 20 and the injection hole 11.

[0070] Reference Figure 1 A support frame 12 is provided on one side of the injection blow molding machine 1, and an adjusting cylinder 13 is horizontally provided on the support frame 12; two guide rails are provided in parallel on the support frame 12, and the extruder 2 is slidably sleeved on the guide rails; the adjusting cylinder 13 is suitable for driving the extruder 2 to move horizontally. The adjusting cylinder 13 is suitable for driving the extruder 2 to make the injection head 20 approach or move away from the lower bottom mold 10.

[0071] Some embodiments provide an injection mechanism for an injection blow molding machine, comprising:

[0072] An extruder 2 is slidably disposed on one side of the injection blow molding machine 1, and an injection head 20 is disposed at a discharge end thereof;

[0073] A plurality of adjusting and protecting mechanisms 3, which are slidably arranged on the outer wall of the injection head 20 and are suitable for closing the injection head 20;

[0074] The extruder 2 moves horizontally until the adjusting and protecting mechanism 3 is limited, and the injection head 20 continues to move horizontally, and the adjusting and protecting mechanism 3 is adapted to be turned outward relative to the injection head 20;

[0075] During the turning process, the regulating and protecting mechanism 3 is adapted to absorb the raw material inside the injection head 20 by negative pressure so as to smear the raw material on the outer wall of the injection head 20 .

[0076] Some embodiments provide a material injection working method, comprising:

[0077] If the extruder 2 does not move toward the injection blow molding machine 1, the plurality of regulating and protecting mechanisms 3 are adapted to close the injection head 20 to prevent dust or impurities from contaminating the raw materials in the injection head 20;

[0078] The extruder 2 does not move toward the injection blow molding machine 1 until the adjusting and protecting mechanism 3 abuts against the lower bottom mold 10, and the injection head 20 continues to move horizontally, and the adjusting and protecting mechanism 3 is adapted to be turned outward relative to the injection head 20;

[0079] During the turning process, the regulating and protecting mechanism 3 is adapted to absorb the raw material inside the injection head 20 by negative pressure so as to smear the raw material on the outer wall of the injection head 20 .

[0080] 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.

[0081] 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.

[0082] 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. A stable injection blow molding machine, characterized in that: include: An injection blow molding machine (1) having at least a lower bottom mold (10) disposed thereon; An extruder (2) which is slidably arranged on one side of the injection blow molding machine (1) and has an injection head (20) arranged at the end thereof; A plurality of adjustment and protection mechanisms (3) which are slidably arranged on the outer wall of the injection head (20) and are suitable for closing the injection head (20); The extruder (2) slides in the direction of the lower bottom mold (10) until the adjusting and protecting mechanism (3) abuts against the lower bottom mold (10), and the injection head (20) continues to move horizontally, and the adjusting and protecting mechanism (3) is adapted to be turned outward relative to the injection head (20); During the turning process of the regulating and protecting mechanism (3), the regulating and protecting mechanism (3) is suitable for sucking the raw material inside the injection head (20) by negative pressure so as to smear the raw material on the outer wall of the injection head (20).

2. The stable injection blow molding machine according to claim 1, characterized in that: The regulating and protecting mechanism (3) comprises: a connecting rod (31) which is parallel to the injection head (20) and is slidably arranged at the end of the extruder (2); A protective sheet (32), one end of which is hinged to the end of the connecting rod (31), and the inner wall of the other end is suitable for abutting against the end wall of the injection head (20); After the protective sheet (32) abuts against the lower bottom mold (10), the injection head (20) continues to move in the direction of the lower bottom mold (10), and the protective sheet (32) turns outward to expose the injection head (20).

3. The stable injection blow molding machine according to claim 2, characterized in that: The protection sheets (32) are arc-shaped, and the side walls of adjacent protection sheets (32) abut against each other when closed, so as to seal the discharge hole of the injection head (20).

4. The stable injection blow molding machine according to claim 2, characterized in that: The outer wall of the protection sheet (32) is provided with a positioning portion (33), and the positioning portion (33) extends axially along the injection head (20); The positioning portion (33) is provided with a connecting air pipe (34) which is in communication with an air pump.

5. The stable injection blow molding machine according to claim 4, characterized in that: A flow channel (35) is provided inside one end of the protection sheet (32) close to the positioning portion (33), which is connected to the connecting air pipe (34), and the air outlet of the flow channel (35) faces the discharge hole of the injection head (20), so as to absorb the raw material in the discharge hole with negative pressure.

6. The stable injection blow molding machine according to claim 2, characterized in that: The extruder (2) is provided with a limit groove matched with the connecting rod (31) at one end close to the injection head (20), and a spring (36) is arranged in the limit groove. One end of the spring (36) is fixed to the end wall of the connecting rod (31), and the spring (36) is suitable for pushing the connecting rod (31) to slide in the direction of the lower bottom mold (10).

7. The stable injection blow molding machine according to claim 2, characterized in that: The outer wall of the connecting rod (31) is provided with an elastic sheet (37) which is in an "L" shape and has one end abutting against the outer wall of the protective sheet (32); When the protection sheet (32) is limited and turned outward by the lower bottom mold (10), the protection sheet (32) is suitable for pushing the elastic sheet (37) to deform.

8. The stable injection blow molding machine according to claim 2, characterized in that: The regulating and protecting mechanism (3) further comprises a heating plate (38), which is arranged on the outer wall of the protecting plate (32) and is electrically connected to a power source, wherein the heating plate (38) is suitable for heating the protecting plate (32).

9. The stable injection blow molding machine according to claim 1, characterized in that: The side wall of the lower bottom mold (10) is provided with an injection hole (11), and the injection head (20) is suitable for being inserted into the injection hole (11); In the process of inserting the injection head (20) into the injection hole (11), the protective sheet (32) is turned outward relative to the injection head (20), and is suitable for spraying material onto the outer wall of the injection head (20) to seal the gap between the injection head (20) and the injection hole (11).

10. The stable injection blow molding machine according to claim 1, characterized in that: A support frame (12) is disposed on one side of the injection-blow molding machine (1), and an adjusting cylinder (13) is horizontally disposed on the support frame (12); Two guide rails are arranged in parallel on the support frame (12), and the extruder (2) is slidably sleeved on the guide rails; The regulating cylinder (13) is suitable for driving the extruder (2) to move horizontally.

11. An injection mechanism for an injection blow molding machine, characterized in that: include: An extruder (2) is slidably arranged on one side of the injection blow molding machine (1), and an injection head (20) is arranged at a discharge end thereof; A plurality of adjustment and protection mechanisms (3) which are slidably arranged on the outer wall of the injection head (20) and are suitable for closing the injection head (20); The extruder (2) moves horizontally until the adjusting and protecting mechanism (3) is limited, and then the injection head (20) continues to move horizontally, and the adjusting and protecting mechanism (3) is adapted to be turned outward relative to the injection head (20); During the turning process, the regulating protection mechanism (3) is adapted to absorb the raw material inside the injection head (20) by negative pressure so as to smear the raw material on the outer wall of the injection head (20).

12. A material injection working method, characterized in that: A stable injection blow molding machine according to any one of claims 1 to 10 or 11 is used, comprising: If the extruder (2) does not move in the direction of the injection blow molding machine (1), the plurality of regulating and protecting mechanisms (3) are adapted to close the injection head (20) to prevent dust or impurities from contaminating the raw materials in the injection head (20); The extruder (2) does not move toward the injection blow molding machine (1), and after the adjusting and protecting mechanism (3) contacts the lower bottom mold (10), the injection head (20) continues to move horizontally, and the adjusting and protecting mechanism (3) is adapted to be turned outward relative to the injection head (20); During the turning process, the regulating protection mechanism (3) is adapted to absorb the raw material inside the injection head (20) by negative pressure so as to smear the raw material on the outer wall of the injection head (20).

Images