Cooling device for injection-molded part after injection molding

Abstract

The utility model discloses a cooling device for injection-molded parts after injection molding, which comprises a vertically arranged cooling charging barrel, and a plurality of air-blowing air-cooling mechanisms for cooling the injection-molded parts are assembled and connected on the cooling charging barrel; the cooling device for the injection-molded part after injection molding further comprises a plurality of slow falling mechanisms installed in the cooling charging barrel, and the slow falling mechanisms are arranged in an up-down layered mode. The slow falling mechanism comprises a plurality of annularly distributed slow falling plates, hinge seats are hinged to the slow falling plates, and the hinge seats are fixedly connected to the inner side wall of the cooling charging barrel; inclined pulling springs are fixedly connected to the slow falling plates, and are fixedly connected to the inner side wall of the cooling charging barrel; in the process that the injection molding part falls into the cooling charging barrel, the falling of the injection molding part is released and the falling time of the injection molding part is delayed through the overturning of the elastically-pulled slow falling plate. According to the device, the injection molding part can pass through, the passing time is prolonged, the time for the injection molding part to pass through the cooling charging barrel is prolonged, meanwhile, the high passing amount of the injection molding part can be kept, and the requirement for batch cooling efficiency is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molding processing, and particularly relates to a post-injection cooling device for injection molding. Background Art

[0002] Injection molded parts are plastic parts made by heat treating and injection molding plastic particles such as polyurethane particles and polytetrafluoroethylene particles. Because injection molded parts are made of plastic, they have low production costs and simple production processes. They can be processed into parts of various shapes and sizes. For example, the shell of the shock absorber air bag used in automobiles is produced by injection molding.

[0003] During the production and processing of injection molded parts, although the products are cooled during the injection molding process, the surface of the parts still retains a certain temperature after unloading. The plastic material of the injection molded parts determines that they are not resistant to high temperatures and pressures, especially during the pressure process. Once the surface of the parts is not sufficiently cooled during the injection molding process, the parts will be compressed during the pressure stacking process and are very easy to deform.

[0004] Therefore, in the actual production process, water cooling is used for cooling. However, the disadvantages of water cooling are also very obvious. That is, a large amount of water droplets remain on the surface of the injection molded parts after cooling, making it difficult to dry.

[0005] Secondly, the water cooling method requires that the injection molded parts be loaded into the water cooling tank for cooling, and then the injection molded parts need to be collected again. The cooling method is relatively cumbersome. Finally, the water cooling method needs to replace the cold water as the water temperature rises. The amount of wastewater generated by cooling is relatively large, and the cost of cooling is relatively high.

[0006] Therefore, in the actual production process, how to quickly cool down the injection molded parts in batches after they are ejected from the mold is crucial to improving production efficiency. Utility Model Content

[0007] Based on the above background, the purpose of the utility model is to provide a cooling device for injection molded parts after injection molding.

[0008] In order to achieve the above objectives, the utility model adopts the following technical solutions:

[0009] A post-injection cooling device for injection molded parts, comprising a vertically arranged cooling barrel, on which a plurality of air-blowing cooling mechanisms for cooling the injection molded parts are mounted and connected;

[0010] When the injection molded parts are fed into the cooling barrel and fall, they are cooled by air-blowing cooling mechanism;

[0011] The post-injection cooling device for injection molded parts further comprises a plurality of slow-down mechanisms installed in the cooling barrel, the slow-down mechanisms being arranged in upper and lower layers; the slow-down mechanisms comprising a plurality of annularly distributed slow-down plates, the slow-down plates being hinged with hinged seats, and the hinged seats being fixedly connected to the inner side wall of the cooling barrel;

[0012] The slow-falling plate is fixedly connected with an inclined tension spring, and the inclined tension spring is fixedly connected to the inner wall of the cooling barrel;

[0013] When the injection molded parts fall into the cooling barrel, the elastically pulled slow-drop plate flips over to release the injection molded parts and delay their falling time, thereby increasing the cooling time of the air-blowing cooling mechanism.

[0014] Preferably, a hinge tongue is fixedly connected to the slow-fall plate;

[0015] The hinge tongue is hinged on the hinge seat; the lower end of the inclined spring is fixedly connected to the top of the hinge tongue.

[0016] Preferably, the slow-fall plate is in a curved shape.

[0017] Preferably, the air-blowing cooling mechanism comprises a vertical air-cooling pipe installed on the outer side wall of the cooling barrel, the cooling barrel is connected to a plurality of branch pipes passing through the cooling barrel, and the air outlet ends of the branch pipes are connected to air blowing nozzles.

[0018] Preferably, the blowing nozzle is tilted toward the slow-fall plate;

[0019] The air blowing nozzles are arranged in upper and lower layers, and the air blowing nozzles of each layer are located above the slow-falling mechanism of each layer.

[0020] Preferably, the lower end of the cooling barrel is fixedly connected with an annular seat plate;

[0021] An air guide mechanism is installed at the bottom of the annular seat plate;

[0022] The air guide mechanism includes a plurality of air guide plates;

[0023] The wind guide plate comprises a vertical portion which is vertically fixedly connected to the bottom of the annular seat plate, and the vertical portion is integrally formed with a wind guide portion which is bent on the outside.

[0024] Preferably, a moisture shield adapted to the air guide mechanism is fixedly connected to the lower end of the cooling barrel;

[0025] During the drying process, the air-blowing and air-cooling mechanism blows away the water droplets on the injection molded parts to form water vapor. The airflow carries the water vapor and moves toward the moisture barrier hood under the guidance of the air guide plate. The water vapor is isolated and diffused in a closed manner through the moisture barrier hood.

[0026] Preferably, the bottom cross-sectional dimension of the moisture shield is larger than the top cross-sectional dimension of the moisture shield.

[0027] Preferably, the top of the moisture shield is fixedly connected with an annular top seat, and the annular top seat is fixedly installed at the top position of the annular seat plate through a plurality of connecting plates.

[0028] The utility model has the following beneficial effects:

[0029] 1. Under normal circumstances, under the pulling of the inclined spring, the slow-drop plates are kept horizontal. With the cooperation of the three slow-drop plates distributed in an annular manner, the space for the injection molded parts to pass through is small. When the injection molded parts enter, under the action of gravity, one or more slow-drop plates are pressed and flipped down to increase the passing gap (at this time, the falling speed of the injection molded parts has been reduced). In this way, the injection molded parts can pass through layer by layer, and the passing time is extended, so as to increase the time for them to pass through the cooling barrel, and then they are fully air-cooled. The cooling barrel set downward can also maintain a high injection molded part throughput to meet the batch cooling efficiency.

[0030] 2. The blowing nozzle is tilted toward the slow-drop plate; corresponding to the layered slow-drop plate, the blowing nozzle is arranged in layers, and each layer of blowing nozzle is located above each layer of slow-drop mechanism. During the falling process of the injection molded parts, the blowing nozzle blows the cooling airflow toward the injection molded parts. In this way, layer-by-layer air blowing cooling is achieved, thereby achieving sufficient cooling of the residual temperature on the injection molded parts.

[0031] 3. During the drying process, the air-blowing cooling mechanism will blow away the water droplets on the injection molded parts after the pre-spraying and cooling to form water vapor. The airflow carries the water vapor and moves toward the moisture shield under the guidance of the air guide plate. The water vapor is separated and diffused through the moisture shield. Specifically, after the water vapor and airflow hit the moisture shield, the speed of the water vapor and airflow decreases. At this time, a large amount of water vapor slides down the wall of the moisture shield. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0033] Figure 1 It is a schematic diagram of the overall structure in an embodiment of the utility model;

[0034] Figure 2 This is a structural schematic diagram of the slow-down mechanism in the embodiment of the utility model;

[0035] Figure 3 This is a schematic diagram of the structure of installing a vertical air cooling pipe in the cooling barrel in the embodiment of the utility model;

[0036] Figure 4 For the utility model embodiment Figure 1 A schematic diagram of the structure from another perspective;

[0037] Figure 5 This is a schematic diagram of the structure of the distribution mode of the slow-fall mechanism in the cooling barrel of the embodiment of the utility model.

[0038] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0042] Example 1

[0043] like Figure 1-5 As shown, a post-injection cooling device for injection molded parts comprises a vertically arranged cooling barrel 1, the top of the cooling barrel 1 is integrally formed with a conical material guide portion 11 for guiding material, so as to enable the injection molded parts to be fed from the conical material guide portion into the cooling barrel 1.

[0044] The cooling barrel 1 is equipped with a plurality of air-blowing cooling mechanisms 2 for cooling the injection molded parts. When the injection molded parts are fed into the cooling barrel 1 and fall down, they are cooled by the air-blowing cooling mechanisms 2 .

[0045] At the same time, the post-injection cooling device for injection molded parts also includes a plurality of slow-drop mechanisms 4 installed in the cooling barrel 1, and the slow-drop mechanisms 4 are arranged in layers up and down. Specifically, when the injection molded parts falling from the conveyor belt (in the actual working process, the whole device is installed at the discharge end of the conveyor belt, which is unstable, a large number of injection molded parts for transmission and transportation fall into the cooling barrel 1 to achieve batch processing).

[0046] The slow-drop mechanism 4 reduces the time for the dropped injection molded parts to pass through the cooling barrel 1, thereby ensuring sufficient time for air cooling of the injection molded parts.

[0047] Specifically, the slow-fall mechanism 4 includes a plurality of annularly distributed slow-fall plates 41 (the slow-fall plates 41 are made of stainless steel and have a curved shape, with rounded edges to avoid scratches on injection molded parts). The slow-fall plates 41 are hinged with a hinge seat, and the hinge seat is fixedly connected to the inner wall of the cooling barrel 1.

[0048] Specifically, a hinge tongue 411 is fixedly connected to the slow-fall plate 41 ; the hinge tongue 411 is hinged on the hinge seat.

[0049] At the same time, a tilted inclined spring 43 is fixedly connected to the slow-falling plate 41, and the inclined spring 43 is fixedly connected to the inner wall of the cooling barrel 1. Specifically, the lower end of the inclined spring 43 is fixedly connected to the top of the hinge tongue 411.

[0050] Under normal circumstances, under the pulling of the inclined spring 43, the slow-drop plates 41 remain horizontal. With the cooperation of the three slow-drop plates 41 distributed in an annular manner, the space for the injection molded parts to pass through is small. When the injection molded parts enter, under the action of gravity, one or more slow-drop plates 41 are pressed and flipped down to increase the passing gap (at this time, the falling speed of the injection molded parts has been reduced). In this way, the injection molded parts can pass through layer by layer, and the passing time is extended, so as to increase the time for them to pass through the cooling barrel 1, and then achieve full air cooling. The cooling barrel 1 set downward can also maintain a high injection molded part throughput to meet the batch cooling efficiency.

[0051] Example 2

[0052] like Figure 1-5 As shown, in this embodiment, based on the structure of embodiment 1, the air-blowing cooling mechanism 2 includes a vertical air-cooling pipe 22 installed on the outer wall of the cooling barrel 1 (the top of the vertical air-cooling pipe 22 is connected to a joint pipe 221, and the joint pipe 221 is connected to an exhaust pipe on a structure such as a blower in an existing manner), and the cooling barrel 1 is connected to a plurality of branch pipes 211 passing through the cooling barrel 1, and the air outlet end of the branch pipe 211 is connected to an air blowing nozzle 21 (the air blowing nozzle 21 is a conventional air blowing nozzle disclosed in the prior art, which is used to increase the gas pressure during the air blowing process).

[0053] Specifically, the air blowing nozzles 21 are inclined toward the slow-falling plate 41 ; corresponding to the layered slow-falling plate 41 , the air blowing nozzles 21 are arranged in upper and lower layers, and each layer of the air blowing nozzles 21 is located above each layer of the slow-falling mechanism 4 .

[0054] During the falling process of the injection molded part, the air blowing nozzle 21 blows the cooling airflow toward the injection molded part. In this way, layer-by-layer air blowing cooling is achieved, thereby achieving sufficient cooling of the residual temperature on the injection molded part.

[0055] Example 3

[0056] like Figure 1-5 As shown, this embodiment is based on the structure of embodiment 1. When the injection molded parts are injected and unloaded, the temperature of the injection molded parts is too high (often due to the poor cooling effect of the injection molding equipment). At this time, in order to improve its cooling effect, it is often cooled by spraying water vapor during the process of loading onto the conveyor belt and during the transportation of the conveyor belt to quickly reduce the surface heat. However, the injection molded parts cannot be cooled to room temperature, so the unloaded injection molded parts are air-cooled in the above manner.

[0057] However, during the air cooling process, a large amount of water vapor is generated (water vapor moves with the air flow). In order to avoid the diffusion of water vapor (especially when the surface temperature of the injection molded parts is high, the water vapor is more serious after spray cooling, and then the air is blown to cool down, so that a large amount of water vapor diffuses in the workshop).

[0058] The lower end of the cooling barrel 1 is fixedly connected to a ring-shaped seat plate; an air guide mechanism is installed at the bottom of the ring-shaped seat plate; the air guide mechanism includes a plurality of air guide plates 5; the air guide plate 5 includes a vertical portion vertically fixedly connected to the bottom position of the ring-shaped seat plate, and the vertical portion is integrally formed with an air guide portion with an outer side bent.

[0059] At the same time, the lower end of the cooling barrel 1 is fixedly connected with a moisture shield 32 adapted to the air guide mechanism, specifically: the top of the moisture shield 32 is fixedly connected with an annular top seat 31, and the annular top seat 31 is fixedly installed at the top position of the annular seat plate through a plurality of connecting plates 311. At the same time, the bottom cross-sectional size of the moisture shield 32 is larger than the top cross-sectional size of the moisture shield 32, and the shape is conical.

[0060] During the drying process, the air-blowing and air-cooling mechanism 2 blows away the water droplets on the injection molded parts to form water vapor, and the air flow carries the water vapor and moves toward the moisture shield 32 under the guidance of the air guide plate 5, and the water vapor is blocked and diffused by the moisture shield 32. Specifically, after the water vapor and the air flow hit the moisture shield 32, the speed of the water vapor and the air flow decreases, and at this time, a large amount of water vapor slides down along the wall of the moisture shield 32.

[0061] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A post-injection cooling device for injection molded parts, characterized in that: It comprises a vertically arranged cooling barrel, on which a plurality of air-blowing cooling mechanisms for cooling the injection molded parts are mounted and connected; When the injection molded parts are fed into the cooling barrel and fall, they are cooled by air-blowing cooling mechanism; The post-injection cooling device for injection molded parts further comprises a plurality of slow-down mechanisms installed in the cooling barrel, the slow-down mechanisms being arranged in upper and lower layers; the slow-down mechanisms comprising a plurality of annularly distributed slow-down plates, the slow-down plates being hinged with hinged seats, and the hinged seats being fixedly connected to the inner side wall of the cooling barrel; The slow-falling plate is fixedly connected with an inclined tension spring, and the inclined tension spring is fixedly connected to the inner wall of the cooling barrel; When the injection molded parts fall into the cooling barrel, the elastically pulled slow-drop plate flips over to release the injection molded parts and delay their falling time, thereby increasing the cooling time of the air-blowing cooling mechanism.

2. The post-injection cooling device for injection molded parts according to claim 1, characterized in that: A hinge tongue is fixedly connected to the slow-fall plate; The hinge tongue is hinged on the hinge seat; the lower end of the inclined spring is fixedly connected to the top of the hinge tongue.

3. The post-injection cooling device for injection molded parts according to claim 2, characterized in that: The slow-fall plate is in a curved shape.

4. The post-injection cooling device for injection molded parts according to claim 1, characterized in that: The air-blowing cooling mechanism comprises a vertical air-cooling pipe installed on the outer wall of the cooling barrel. The cooling barrel is connected to a plurality of branch pipes penetrating the cooling barrel, and the air outlet end of the branch pipe is connected to an air blowing nozzle.

5. The post-injection cooling device for injection molded parts according to claim 4, characterized in that: The air blowing nozzle is tilted toward the slow-fall plate; The air blowing nozzles are arranged in upper and lower layers, and the air blowing nozzles of each layer are located above the slow-falling mechanism of each layer.

6. The post-injection cooling device for injection molded parts according to claim 1, characterized in that: The lower end of the cooling barrel is fixedly connected with an annular seat plate; An air guide mechanism is installed at the bottom of the annular seat plate; The air guide mechanism includes a plurality of air guide plates; The wind guide plate comprises a vertical portion which is vertically fixedly connected to the bottom of the annular seat plate, and the vertical portion is integrally formed with a wind guide portion which is bent on the outside.

7. The post-injection cooling device for injection molded parts according to claim 6, characterized in that: The lower end of the cooling barrel is fixedly connected with a moisture shield adapted to the air guide mechanism; During the drying process, the air-blowing and air-cooling mechanism blows away the water droplets on the injection molded parts to form water vapor. The airflow carries the water vapor and moves toward the moisture barrier hood under the guidance of the air guide plate. The water vapor is isolated and diffused in a closed manner through the moisture barrier hood.

8. The post-injection cooling device for injection molded parts according to claim 7, characterized in that: The bottom cross-sectional dimension of the moisture shield is greater than the top cross-sectional dimension of the moisture shield.

9. The post-injection cooling device for injection molded parts according to claim 8, characterized in that: The top of the moisture shield is fixedly connected with an annular top seat, and the annular top seat is fixedly installed on the top position of the annular seat plate through a plurality of connecting plates.

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