Toughening treatment device for injection molded part

Abstract

The utility model discloses a toughening treatment device for an injection molded part. The toughening treatment device comprises a heat treatment cylinder, an injection molding part heat treatment mechanism is rotationally connected into the heat treatment cylinder and comprises an inner cylindrical framework, and the inner cylindrical framework can be separated from the bottom of the heat treatment cylinder; a cylindrical spacer sleeve is assembled and connected to the outer side of the inner cylindrical framework, and a plurality of through hole structures are formed in the cylindrical spacer sleeve; the inner cylindrical framework comprises an upper cover seat and a lower cover seat, a plurality of framework rods which are vertically arranged are assembled and connected between the upper cover seat and the lower cover seat, and injection molding parts can be discharged from gaps between the adjacent framework rods; the upper end of the framework rod is fixedly assembled and connected with an adjusting plate, and the upper end of the cylindrical spacer sleeve is in threaded connection with a screw rod penetrating through the adjusting plate; and a plurality of through holes are formed in the adjusting plate. The device realizes heat treatment in an immersion mode. And meanwhile, in the rotating state, the injection-molded part is kept shaking and loosening, and the heat treatment effect with high-temperature water is improved. And meanwhile, after heat treatment, the cylindrical spacer sleeve is lifted, so that discharging is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat treatment of injection molded parts, and particularly relates to a toughening treatment device for injection molded parts. Background Art

[0002] Injection molded parts refer to plastic products that can be used in industry, which are formed by heating plastic particles such as polyurethane particles, polyvinyl chloride particles, etc. to form high-temperature plastic liquid, and then using mold injection molding. For example, the shell of the shock absorber air bag on the car is formed by injection molding.

[0003] Injection molded parts are not only low in cost, but also simple and quick to mold, and can be molded into various complex shapes of accessories according to production needs. Therefore, injection molded parts are widely used in the industry, especially as accessories on automobiles, such as the shock absorber air bag housing mentioned above.

[0004] After the injection molded parts are formed, in order to improve the toughness of the injection molded parts, the injection molded parts need to be heat treated. The more common heat treatment method is boiling. At present, the more common method is to put the injection molded parts into a boiling cylinder for heating. The injection molded parts are placed in the boiling cylinder, and in order to meet the requirements of processing a certain number of injection molded parts at one time, the size of the boiling cylinder is often relatively large. Therefore, the injection molded parts need to be fished out of the high-temperature water after boiling.

[0005] However, in a high-temperature water environment, firstly, a large amount of steam escapes from the barrel mouth, causing the temperature at the barrel mouth to be high and the vision to be blurred; secondly, the boiling barrel has a certain height, making it difficult to fish out the material.

[0006] Therefore, the prior art adopts a lifting method to place the injection molded parts into a net bag and put it into a water bath. However, as the net bag is heated and loaded with the injection molded parts, during the lifting process, the net bag is subjected to water resistance and the gravity of the injection molded parts (the residual water in the injection molded parts increases the weight), causing the net bag to break easily, and the injection molded parts cannot be easily fished out.

[0007] And because the injection molded parts are made of plastic, some injection molded parts with sealed structures tend to float up after being placed in the boiling water cylinder, resulting in some injection molded parts being unable to be effectively immersed in water and fully heat treated. Utility Model Content

[0008] Based on the above background, the purpose of the utility model is to provide an injection molded part toughening treatment device.

[0009] In order to achieve the above objectives, the utility model adopts the following technical solutions:

[0010] An injection molded part toughening treatment device comprises a heat treatment barrel;

[0011] An injection molding heat treatment mechanism is rotatably connected in the heat treatment cylinder, and the injection molding heat treatment mechanism includes an inner cylindrical frame, and the inner cylindrical frame can be detached from the bottom of the heat treatment cylinder;

[0012] The outer side of the inner cylindrical frame is connected with a cylindrical baffle sleeve, and the cylindrical baffle sleeve is provided with a plurality of through-hole structures;

[0013] The inner cylindrical frame includes an upper cover seat and a lower cover seat, and a plurality of vertically arranged frame rods are assembled and connected between the upper cover seat and the lower cover seat, and the gap between adjacent frame rods is larger than the size of the injection molded part, and the injection molded part can be discharged from the gap between adjacent frame rods;

[0014] The upper end of the skeleton rod is fixedly assembled and connected with an adjustment plate, and the upper end of the cylindrical baffle sleeve is threadedly connected with a screw rod penetrating the adjustment plate;

[0015] The adjusting plate is provided with a plurality of through holes spaced apart from each other and corresponding to the screw rods;

[0016] During the heat treatment process, the cylindrical baffle sleeve is supported at the top position of the lower cover seat. After the heat treatment, the inner cylindrical frame is lifted and separated from the heat treatment barrel, the screw is separated from the through hole position, the cylindrical baffle sleeve is lifted to the lower end position of the frame rod to be exposed, and the injection molded parts are discharged from the inner cylindrical frame.

[0017] Preferably, the upper cover seat and the lower cover seat both include a conical cover body portion, and an annular flange is integrally formed at the edge of the cover body portion;

[0018] The frame rods are mounted between the annular flanges.

[0019] Preferably, the bottom of the skeleton rod is fixedly connected to the annular flange of the lower cover seat, and the upper end of the skeleton rod is slidably connected to the annular flange of the upper cover seat;

[0020] The upper end of the skeleton rod is threadedly connected with a pair of nuts positioned on both sides of the annular flange.

[0021] Preferably, a central through hole is provided at the central position of the cover body of the upper cover seat;

[0022] The bottom center of the lower cover seat is fixedly connected with a lower clamping seat, and the lower clamping seat is rotatably connected to the bottom of the heat treatment cylinder.

[0023] Preferably, a rotating seat is rotatably connected to the center of the bottom of the heat treatment cylinder, and the rotating seat is clamped on the lower clamping seat;

[0024] A motor is installed at the bottom center of the heat treatment cylinder, and the output shaft of the motor is fixedly assembled at the bottom center of the rotating seat.

[0025] Preferably, a clamping protrusion is fixedly connected to the top center of the rotating seat, and a clamping groove adapted to the clamping protrusion is provided at the bottom center of the lower clamping seat.

[0026] Preferably, the engaging boss is in the shape of a regular hexagon.

[0027] Preferably, the upper end of the adjustment plate is fixedly connected with a rolling element which abuts against the upper end of the inner wall of the heat treatment cylinder;

[0028] The rolling element comprises a ball seat, on which a rolling ball is hinged, and the rolling ball rolls against the inner wall of the heat treatment cylinder.

[0029] Preferably, the lower end of the outer side wall of the heat treatment cylinder is connected with an inlet and outlet pipe, and the inlet and outlet pipe is connected with a valve.

[0030] The utility model has the following beneficial effects:

[0031] 1. During the heat treatment process, the injection molded parts are placed in the inner cylindrical frame. In the rotating state, the injection molded parts can fully interact with the high-temperature water to improve the heat treatment effect. In the traditional static heat treatment, the injection molded parts are piled together during the heat treatment process, and the injection molded parts with special-shaped structures are more likely to cause some parts of the injection molded parts to not be fully heat treated, such as the injection molded parts being nested together. By rotating the injection molded parts, the heat exchange effect with the high-temperature water is improved, thereby improving the toughening effect of the heat treatment.

[0032] 2. After the heat treatment is completed, the operator needs to lift the inner cylindrical frame to a high position during the discharge process. At this time, the lower cover seat is raised to the position of the barrel mouth. Remove the fastening nut on the screw and turn the screw until it is disengaged from the through hole on the adjustment plate. After raising the cylindrical baffle sleeve, the injection molded parts will fall from the gap between the skeleton rods. This method makes it easy to separate and release the high-temperature injection molded parts from the inner cylindrical frame formed by the skeleton rods. This method makes it easy to discharge the high-temperature materials.

[0033] 3. The device disclosed in the utility model realizes the process of heat treatment of injection molded parts by placing the injection molded parts in the inner cylindrical frame to realize immersion heat treatment. At the same time, in the rotating state, the injection molded parts are kept shaking and loose to improve the heat treatment effect with high-temperature water. At the same time, after the heat treatment, the cylindrical baffle sleeve is lifted to facilitate discharge. This method not only greatly improves the heat treatment effect and work efficiency, but also facilitates discharge, and the high-temperature thermoplastic parts can be easily discharged from the cylinder structure for easy collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] 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.

[0035] Figure 1 It is a schematic diagram of the dispersed structure in the embodiment of the utility model;

[0036] Figure 2 This is a schematic diagram of the structure of the inner cylindrical frame in the embodiment of the utility model;

[0037] Figure 3 This is a schematic diagram of the structure of a rolling element in an embodiment of the utility model;

[0038] Figure 4 For the utility model embodiment Figure 2 A schematic diagram of the structure from another perspective;

[0039] Figure 5 It is a schematic diagram of the overall structure in an embodiment of the utility model;

[0040] Figure 6 For the utility model embodiment Figure 5 Schematic diagram of the plane structure.

[0041] 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

[0042] 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.

[0043] 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.

[0044] 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.

[0045] Example 1

[0046] like Figure 1-6 As shown, an injection molding toughening treatment device includes a heat treatment barrel 1; the lower end of the outer wall of the heat treatment barrel 1 is connected with an inlet and outlet pipe, and the inlet and outlet pipe is connected with a valve. Pump and drain water into the heat treatment barrel 1 through the inlet and outlet pipe. According to the existing heating method such as electric heating, a heating resistor is installed at the bottom position of the heat treatment barrel 1 (the heating resistor is staggered with the structure such as the rotating seat described below, and does not affect the mechanical rotation).

[0047] The heat treatment cylinder 1 is rotatably connected with an injection molded part heat treatment mechanism 3 , and the injection molded part heat treatment mechanism 3 includes an inner cylindrical frame, and the inner cylindrical frame can be detached from the bottom of the heat treatment cylinder 1 .

[0048] Specifically: the inner cylindrical skeleton includes an upper cover seat 31 and a lower cover seat (the shapes of the upper cover seat 31 and the lower cover seat are: the upper cover seat 31 and the lower cover seat both include a conical cover body, and the edge position of the cover body is integrally formed with an annular flange 311), and a rotating seat is rotatably connected to the bottom center position inside the heat treatment cylinder 1 (at the same time, a motor 2 is installed at the bottom center position outside the heat treatment cylinder 1, and the output shaft of the motor 2 is fixedly assembled at the bottom center of the rotating seat. According to the existing method, a sealed bearing is installed at the center position of the bottom of the heat treatment cylinder 1, and the output shaft of the motor 2 is rotatably connected to the sealed bearing to achieve rotation and sealing), and a lower clamping seat is fixedly connected to the bottom of the lower cover seat, and the rotating seat is clamped on the lower clamping seat.

[0049] The specific method is as follows: a clamping convex seat (in the shape of a regular hexagon) is fixedly connected to the top center position of the rotating seat, and a clamping groove adapted to the clamping convex seat is opened at the bottom center position of the lower clamping seat.

[0050] Through the above method, when the inner cylindrical frame is lifted up, the engaging protrusion is separated from the lower engaging seat position, and when it is lifted down, the engaging protrusion is engaged in the engaging groove.

[0051] In the above method, during the heat treatment process, the injection molded parts are placed in the inner cylindrical frame. In the rotating state, the injection molded parts can fully interact with the high-temperature water to improve the heat treatment effect. In the traditional static heat treatment, the injection molded parts are piled together during the heat treatment process, and the injection molded parts with special-shaped structures are more likely to cause some parts of the injection molded parts to not be fully heat treated, such as the injection molded parts being nested together. By rotating the injection molded parts, the heat exchange effect with the high-temperature water is improved.

[0052] Therefore, in the actual working process, the motor 2 is designed as a forward and reverse motor 2 to achieve switching between clockwise and counterclockwise rotation, thereby fully increasing the contact effect between the high-temperature water and the injection molded part and increasing the heat treatment effect.

[0053] A plurality of vertically arranged skeleton rods 32 are assembled and connected between the upper cover seat 31 and the lower cover seat. The gap between adjacent skeleton rods 32 is larger than the size of the injection molded parts, and the injection molded parts can be discharged from the gap between adjacent skeleton rods 32. Therefore, in order to prevent the injection molded parts from being discharged from the gap between the skeleton rods 32, a cylindrical baffle sleeve 4 is assembled and connected to the outer side of the inner cylindrical frame. The cylindrical baffle sleeve 4 is provided with a plurality of through-hole structures (specifically, strip-shaped through-hole structures). The cylindrical baffle sleeve 4 is made of thin stainless steel metal.

[0054] The specific method is as follows: the bottom of the skeleton rod 32 is fixedly connected to the annular flange 311 of the lower cover seat, and the upper end of the skeleton rod 32 is slidably connected to the annular flange 311 of the upper cover seat 31 (that is, the skeleton rod 32 is installed between the annular flanges 311); the upper end of the skeleton rod 32 is threadedly connected to a pair of nuts 321 positioned on both sides of the annular flange 311. Loosening the nuts 321 can separate the upper cover seat 31, which is convenient for quick pouring. The cylindrical baffle sleeve 4 plays a baffle role.

[0055] In order to facilitate the discharge of the injection molded parts after heat treatment, the upper end of the skeleton rod 32 is fixedly assembled with an adjustment plate 33, and the upper end of the cylindrical baffle sleeve 4 is threadedly connected with a screw 41 that passes through the adjustment plate 33; the adjustment plate 33 is provided with a plurality of through holes 331 that are spaced apart from each other and correspond to the screw 41. The screw 41 passes through the through hole 331 and is threadedly connected with a fastening nut.

[0056] During the heat treatment process, the cylindrical baffle sleeve 4 is supported at the top position of the lower cover seat (specifically, the cylindrical baffle sleeve 4 is supported at the top position of the annular flange 311). After the heat treatment, the inner cylindrical frame is lifted and separated from the heat treatment cylinder 1, and the screw 41 is separated from the through hole 331, and the cylindrical baffle sleeve 4 is raised to expose the lower end position of the frame rod 32, and the injection molded part is discharged from the inner cylindrical frame. At this time, the screw 41 is passed through the through hole 331 at a high position to keep the cylindrical baffle sleeve 4 in a raised state.

[0057] The specific method is as follows: when it is necessary to discharge the material, the operator lifts the inner cylindrical frame to a high position, and the lower cover seat is raised to the position of the barrel mouth. The fastening nut on the screw rod 41 is removed and the screw rod is screwed until it is disengaged from the through hole 331 on the adjustment plate 33. After the cylindrical baffle sleeve 4 is raised, the injection molded parts are dropped from the gap between the frame rods 32. This method makes it easy to disengage and release the high-temperature injection molded parts from the inner cylindrical frame formed by the frame rods 32. Then the cylindrical baffle sleeve 4 is reset.

[0058] In the process of heat treatment of injection molded parts by the above method, the injection molded parts are placed in the inner cylindrical frame to achieve immersion heat treatment. At the same time, in the rotating state, the injection molded parts are kept shaking and loose to improve the heat treatment effect with high-temperature water. At the same time, after the heat treatment, the cylindrical baffle sleeve 4 is lifted to facilitate discharge. This method not only greatly improves the heat treatment effect and work efficiency, but also facilitates discharge, and the high-temperature thermoplastic parts can be easily discharged from the cylinder structure for easy collection.

[0059] A central through hole is provided at the center of the cover body of the upper cover seat 31 ; during the heat treatment process, the central through hole facilitates the discharge of high-temperature steam.

[0060] Example 2

[0061] like Figure 1-5 As shown, based on the structure of Example 1, in order to improve the stability of the rotation of the inner cylindrical skeleton, the upper end of the adjustment plate 33 is fixedly connected with a rolling member that abuts against the upper end of the inner wall of the heat treatment tube 1; the rolling member includes a ball seat 42, and a ball 421 is hinged on the ball seat 42 (specifically: a hinged limiting groove is provided on the ball seat 42, the ball 421 is limited in the groove and can rotate freely), and the ball 421 rolls on the inner wall of the heat treatment tube 1.

[0062] During the rotation, the upper end of the inner cylindrical frame rolls due to the surrounding friction, so the rotation stability is high. Specifically, after the injection molded part is discharged from the inner cylindrical frame, the center of gravity is unevenly distributed. Therefore, the above method is used to maintain smooth rotation.

[0063] 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 toughening treatment device for injection molded parts, characterized in that: including a heat treatment barrel; An injection molding heat treatment mechanism is rotatably connected in the heat treatment cylinder, and the injection molding heat treatment mechanism includes an inner cylindrical frame, and the inner cylindrical frame can be detached from the bottom of the heat treatment cylinder; The outer side of the inner cylindrical frame is connected with a cylindrical baffle sleeve, and the cylindrical baffle sleeve is provided with a plurality of through-hole structures; The inner cylindrical frame includes an upper cover seat and a lower cover seat, and a plurality of vertically arranged frame rods are assembled and connected between the upper cover seat and the lower cover seat, and the gap between adjacent frame rods is larger than the size of the injection molded part, and the injection molded part can be discharged from the gap between adjacent frame rods; The upper end of the skeleton rod is fixedly assembled and connected with an adjustment plate, and the upper end of the cylindrical baffle sleeve is threadedly connected with a screw rod penetrating the adjustment plate; The adjusting plate is provided with a plurality of through holes spaced apart from each other and corresponding to the screw rods; During the heat treatment process, the cylindrical baffle sleeve is supported at the top position of the lower cover seat. After the heat treatment, the inner cylindrical frame is lifted and separated from the heat treatment barrel, the screw is separated from the through hole position, the cylindrical baffle sleeve is lifted to the lower end position of the frame rod to be exposed, and the injection molded parts are discharged from the inner cylindrical frame.

2. The toughening treatment device for injection molded parts according to claim 1, characterized in that: The upper cover seat and the lower cover seat both include a conical cover body portion, and an annular flange is integrally formed at the edge of the cover body portion; The frame rods are mounted between the annular flanges.

3. The toughening treatment device for injection molded parts according to claim 2, characterized in that: The bottom of the skeleton rod is fixedly connected to the annular flange of the lower cover seat, and the upper end of the skeleton rod is slidably connected to the annular flange of the upper cover seat; The upper end of the skeleton rod is threadedly connected with a pair of nuts positioned on both sides of the annular flange.

4. The toughening treatment device for injection molded parts according to claim 2, characterized in that: A central through hole is provided at the center of the cover body of the upper cover seat; The bottom center of the lower cover seat is fixedly connected with a lower clamping seat, and the lower clamping seat is rotatably connected to the bottom of the heat treatment cylinder.

5. The toughening treatment device for injection molded parts according to claim 4, characterized in that: A rotating seat is rotatably connected to the center of the bottom of the heat treatment cylinder, and the rotating seat is clamped on the lower clamping seat; A motor is installed at the bottom center of the heat treatment cylinder, and the output shaft of the motor is fixedly assembled at the bottom center of the rotating seat.

6. The toughening treatment device for injection molded parts according to claim 5, characterized in that: A clamping convex seat is fixedly connected to the top center position of the rotating seat, and a clamping groove adapted to the clamping convex seat is opened at the bottom center position of the lower clamping seat.

7. The toughening treatment device for injection molded parts according to claim 6, characterized in that: The shape of the clamping protrusion is a regular hexagon.

8. The toughening treatment device for injection molded parts according to claim 6, characterized in that: The upper end of the adjustment plate is fixedly connected with a rolling element which abuts against the upper end of the inner wall of the heat treatment cylinder; The rolling element comprises a ball seat, on which a rolling ball is hinged, and the rolling ball rolls against the inner wall of the heat treatment cylinder.

9. The toughening treatment device for injection molded parts according to claim 1, characterized in that: The lower end of the outer wall of the heat treatment cylinder is connected with an inlet and outlet pipe, and the inlet and outlet pipe is connected with a valve.

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