Heating cylinder for injection molding machine

Abstract

The utility model discloses a heating cylinder for an injection molding machine. The heating cylinder comprises a first half cylinder body and a second half cylinder body, the first half barrel body and the second half barrel body are switched between a locking state and an opening state by means of operation of a plurality of handle locks, the sides, relatively away from the handle locks, of the first half barrel body and the second half barrel body are connected through pivots, the first half barrel body or / and the second half barrel body is / are provided with a heat dissipation safety opening and a cooling door, and the cooling door can be turned over to be opened or closed at the heat dissipation safety opening; the cooling door is provided with a handle lock, and when the temperature exceeds the set temperature, the handle lock is operated to open the cooling door so as to achieve stable and safe heat dissipation and cooling. When the temperature in the barrel exceeds the set temperature, the first half barrel body and the second half barrel body do not need to be integrally dismantled, heating is not stopped, the cooling door is provided with the handle lock, the handle lock is operated to open the cooling door to achieve stable and safe heat dissipation and cooling, and therefore the cooling barrel has excellent performance in the aspects of technicality, practicability and economical efficiency.

Description

Technical Field

[0001] The utility model relates to a heating cylinder used for an injection molding machine. Background Art

[0002] Market research and patent search show that existing injection molding machines need to add a heating cylinder on the periphery of the feed pipe for external heating, so that the temperature in the feed pipe is within the set range to ensure smooth flow of the injection molded plastic after hot melting during injection molding; when the existing heating cylinder is delivering heat, the temperature is often too high due to different delivery time and materials. The temperature will drop if the entire heating cylinder is removed or the heating of the entire section of the heating cylinder is stopped, but the heating cannot be stopped when the injection molding machine is working. The temperature rises and falls greatly and cannot be smoothly reduced to the set temperature; in the existing technology, the heat transfer method is single and the heat utilization rate is poor. For this reason, we have developed a heating cylinder for injection molding machines. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a heating cylinder for an injection molding machine, comprising:

[0004] The first half cylinder and the second half cylinder are operated by a plurality of handle locks to switch between a locked state and an unlocked state and are connected by a pivot on a side relatively far from the handle lock.

[0005] The first half cylinder and / or the second half cylinder is provided with a heat dissipation safety port and a cooling door, and the cooling door can be flipped open or closed at the heat dissipation safety port; the cooling door is provided with a handle lock, and when the temperature exceeds the set temperature, the handle lock is operated to open the cooling door to achieve smooth and safe heat dissipation and cooling.

[0006] In one or more embodiments of the utility model, a wiring seat and an outer wire hole are provided on the outer side of the shell of the first half cylinder and / or the second half cylinder, and the power line passes through the outer wire hole to connect to the wiring seat.

[0007] In one or more embodiments of the present invention, the heating tube assembly includes a glass tube, a heating core arranged in the glass tube, a ceramic wire holder arranged at both ends of the glass tube, and a stainless steel reflector.

[0008] In one or more embodiments of the present invention, the heating core is an infrared spiral heating core.

[0009] In one or more embodiments of the utility model, the first half cylinder includes a semi-ring bottom surface and a joint surface connecting the two ends of the outer shell; the outer shell, the semi-ring bottom surface and the joint surface form an inwardly open accommodating cavity, the heat insulation layer is filled in the accommodating cavity, and the heating tube group is placed at the mouth of the accommodating cavity so that the heating tube group radiates heat inward in a directional manner and the heat resistance of the heat insulation layer causes the heat to be transferred toward the direction of the accommodating cavity mouth to form multiple superimposed combined heat.

[0010] In one or more embodiments of the utility model, the cooling door includes a flip cover hinged to the outer shell, an insulation block connected to the inner side of the flip cover, and an inner cover body that fixes the insulation block and places the insulation block therein; the inner cover body is provided with a long hole.

[0011] In one or more embodiments of the present invention, the inner cover body conforms to the shape of the heat dissipation safety opening and there is a gap between them.

[0012] Compared with the background technology, the utility model has the following effects: by adopting the above technical scheme, when the temperature in the cylinder exceeds the set temperature, there is no need to dismantle the first half cylinder and the second half cylinder as a whole, and heating is not stopped. The cooling door is provided with a handle lock, and the handle lock is operated to open the cooling door to achieve smooth and safe heat dissipation and cooling. Therefore, it has superior performance in terms of technicality, practicality and economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of a heating cylinder for an injection molding machine in one embodiment of the utility model;

[0014] Figure 2 It is a schematic structural diagram of a heating cylinder for an injection molding machine in one embodiment of the utility model from another viewing angle;

[0015] Figure 3 This is a schematic structural diagram of a heating cylinder for an injection molding machine in an embodiment of the utility model with a cooling door opened;

[0016] Figure 4 It is a schematic structural diagram of a heating cylinder of an injection molding machine in an embodiment of the present utility model, in which the first half cylinder and the second half cylinder are in an open state;

[0017] Those skilled in the art can understand the shapes, structures and schemes obtained from the figures shown in the drawings. The various components of the drawings are not necessarily to scale, and the sizes of the various components and elements of the drawings can be enlarged or reduced to more clearly illustrate the implementation scheme of the utility model described in this article. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below. The embodiments are shown in the accompanying drawings, wherein the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions.

[0019] The orientation shown in the drawings cannot be understood as limiting the specific protection scope of the present invention, but is only provided for reference and understanding of the preferred embodiments. The product components shown in the drawings may be changed in position, increased in number, or simplified in structure.

[0020] The "connection" described in the specification and the mutual "connection" relationship of the components shown in the drawings can be understood as a fixed connection or a detachable connection or an integral connection; it can be a direct connection or a connection through an intermediate medium. Ordinary technicians in this field can understand the connection relationship according to the specific circumstances and can derive different implementation methods in an appropriate manner such as screwing, riveting, welding, clamping or embedding.

[0021] The directional words such as up, down, left, right, top, bottom, etc. described in the specification and the directions shown in the drawings, the components can be directly in contact or through other features between them; for example, above can be directly above or obliquely above, or it only means higher than other objects; other directions can also be understood by analogy. The following is a further description of the specific implementation methods of the utility model in conjunction with the drawings of the specification, so that the technical solution and beneficial effects of the utility model are clearer and more explicit.

[0022] The following references Figure 1-4 The figures shown are used to describe specific embodiments. However, those skilled in the art will easily understand that the detailed description given herein with respect to these figures is for illustrative purposes only and should not be understood as being restrictive. This embodiment provides a heating cylinder for an injection molding machine, comprising: a first half-cylinder 1 and a second half-cylinder 2 that can be flipped open or closed; the first half-cylinder 1 and the second half-cylinder 2 are connected by a pivot 3, and the first half-cylinder 1 and the second half-cylinder 2 are provided with a threading hole 4, and a power cord 5 is passed through the threading hole 4 to provide a connection power source for the heating tube group 6 of the first half-cylinder 1 and the second half-cylinder 2.

[0023] The first half cylinder 1 and the second half cylinder 2 are both provided with an outer shell 7, an insulating layer 8 disposed inside the outer shell 7, and a heating tube group 6 disposed inside the insulating layer 8; the wire threading hole 4 is located at a position of the insulating layer 8 close to the outer shell 7, so that the power cord 5 is effectively protected from high temperature on the outside of the insulating layer 8, and stable power supply is provided during operation.

[0024] The first half cylinder 1 and / or the second half cylinder 2 are provided with a heat dissipation safety vent 9 and a cooling door 10. The cooling door 10 can be flipped open or closed at the heat dissipation safety vent 10; the cooling door 10 is provided with a handle lock 11. When the temperature exceeds the set temperature, the handle lock 11 is operated to open the cooling door 10, and the heat dissipation safety vent 9 is opened to discharge the heat outward through the heat dissipation safety vent 9, thereby achieving smooth and safe heat dissipation and cooling.

[0025] A wiring base 12 and an external wire hole 13 are provided on the outer side of the shell 7 of the first half cylinder 1 or / and the second half cylinder 2, and the power line 5 passes through the external wire hole 13 and is connected to the wiring base 12. The wiring base 12 is connected to an external power source.

[0026] The heating tube group 6 includes a glass tube 61, a heating core 62 disposed in the glass tube 61, a ceramic wire holder 63 disposed at both ends of the glass tube 62, and a stainless steel reflector 64. The heating core 62 can be an infrared spiral heating core.

[0027] The first half cylinder 1 includes a semi-ring bottom surface 14 and a joint surface 15 connecting the two ends of the outer shell 1; the outer shell 7, the semi-ring bottom surface 14 and the joint surface 15 form an inwardly open accommodating cavity, the heat insulation layer 8 is filled in the accommodating cavity, and the heating tube 6 group is arranged at the accommodating cavity mouth so that the heating tube group 6 directional heat radiation inwards and the heat resistance of the heat insulation layer 8 causes the heat to be transferred toward the accommodating cavity mouth to form multiple superimposed combined heat.

[0028] The cooling door 10 comprises a flip cover 101 hinged to the outer shell, a heat insulating block 102 connected to the inner side of the flip cover 101, and an inner cover 103 for fixing the heat insulating block 102 and placing the heat insulating block 102 therein; the inner cover 103 is provided with a long hole 104. The inner cover 103 conforms to the shape of the heat dissipation safety vent 9 and there is a gap between them, preferably less than 5 mm, for easy opening and closing.

[0029] The first half cylinder 1 and the second half cylinder 2 are switched between a locked state and an open state by means of a plurality of handle lock operations, so as to facilitate quick installation and removal.

[0030] In summary of the above contents and in combination with all the figures, when in use, when the heating temperature exceeds the set temperature, it is not necessary to dismantle the first half cylinder 1 and the second half cylinder 2 as a whole, and the heating is not stopped. The cooling door is provided with a handle lock 11, and the handle lock is operated to open the cooling door to achieve stable and safe heat dissipation and cooling. In terms of heat utilization, an inwardly opening accommodating cavity is formed by the outer shell 7, the semi-ring bottom surface 14 and the joint surface 15, and the heat insulation layer 8 is filled in the accommodating cavity. The heating tube group 6 is placed at the mouth of the accommodating cavity so that the heating tube group radiates heat inward in a directional manner and is subjected to the thermal resistance of the heat insulation layer so that the heat is transferred toward the mouth of the accommodating cavity to form multiple superimposed combined heat. The multiple superimposed combined heat transfer of light radiation and heat transfer greatly improves the light utilization rate and avoids heat loss to form a directional transfer heat insulation layer. Therefore, it has superior performance in terms of technology, practicality and economy.

[0031] For the purpose of illustration, the foregoing description uses specific nomenclature to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that specific details are not required in order to practice the embodiments. Those skilled in the art should understand that the present invention is not limited to the specific embodiments described above, and improvements and substitutions based on the present invention using known techniques in the art fall within the scope of protection of the present invention and should be defined by the claims.

Claims

1. A heating cylinder for an injection molding machine, characterized in that: include: The first half cylinder and the second half cylinder are operated by a plurality of handle locks to switch between a locked state and an unlocked state and are connected by a pivot on a side relatively far from the handle lock. The first half cylinder and / or the second half cylinder is provided with a heat dissipation safety port and a cooling door, and the cooling door can be flipped open or closed at the heat dissipation safety port; the cooling door is provided with a handle lock, and when the temperature exceeds the set temperature, the handle lock is operated to open the cooling door to achieve smooth and safe heat dissipation and cooling.

2. The heating cylinder for injection molding machine according to claim 1, characterized in that: A wiring seat and an outer wire hole are provided on the outer side of the shell of the first half cylinder or / and the second half cylinder, and the power line passes through the outer wire hole to connect to the wiring seat.

3. The heating cylinder for injection molding machine according to claim 1, characterized in that: The invention comprises a heating tube group, which comprises a glass tube, a heating core arranged in the glass tube, a ceramic wire holder arranged at both ends of the glass tube and a stainless steel reflecting sheet.

4. The heating cylinder for injection molding machine according to claim 3, characterized in that: The heating core adopts an infrared spiral heating core.

5. The heating cylinder for injection molding machine according to claim 4, characterized in that: The first half cylinder includes a semi-ring bottom surface and a joint surface connecting the two ends of the outer shell; the outer shell, the semi-ring bottom surface and the joint surface form an inwardly open accommodating cavity, the heat insulation layer is filled in the accommodating cavity, the heating tube group is placed at the mouth of the accommodating cavity so that the heating tube group radiates heat inward in a directional manner and the heat is transferred toward the mouth of the accommodating cavity due to the thermal resistance of the heat insulation layer to form multiple superimposed combined heat.

6. The heating cylinder for injection molding machine according to claim 1, characterized in that: The cooling door comprises a flip cover hinged to the outer shell, a heat insulating block connected to the inner side of the flip cover, and an inner cover body which fixes the heat insulating block and places the heat insulating block therein; the inner cover body is provided with a long hole.

7. The heating cylinder for an injection molding machine according to claim 6, characterized in that: The inner cover body is consistent with the shape of the heat dissipation safety opening and there is a gap between them.

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