A cooling and shaping device for injection-molded products before secondary processing

Abstract

This invention provides a cooling and shaping device for injection-molded products before secondary processing, comprising a base, a drive mechanism, a first transmission component, a rotating assembly, and a cooling plate disposed on the rotating assembly. The drive mechanism is disposed on the base and connected to the first transmission component. The rotating assembly includes a guide sleeve and a first rotating component movably disposed on the guide sleeve, the guide sleeve being fixed to the base. The first transmission component is movably connected to the first rotating component of the rotating assembly, and axial movement via the first transmission component drives the first rotating component movably disposed on the guide sleeve to rotate. Since the first rotating component is fixedly connected to the cooling plate, it drives the cooling plate to rotate, achieving cyclic cooling of the injection-molded product. By driving the rotating assembly to rotate via the first transmission component, the fixed plate rotates, allowing the injection-molded product to return to its original position after a certain period of cooling for the next process step. This eliminates the need for multiple positioning operations by production line robots, making operation convenient and improving efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of cooling and shaping of injection molded parts, and particularly refers to a cooling and shaping device for injection molded products before secondary processing. Background Technology

[0002] When injection-molded products and sprues are removed from the injection molding machine, the products are extremely hot due to the high temperature of the injection molding process. At this point, it is not advisable to place the products arbitrarily, as this can easily alter their shape and severely affect product quality. Generally, after being removed from the injection molding machine, the products are placed on a pre-set cooling rack to cool and set completely. However, after cooling, the injection-molded products usually require secondary processing. Currently, this is generally done manually, but this method is inefficient, time-consuming, and labor-intensive. With the automation upgrade of the entire production line, manual operation cannot meet production demands and is inconvenient for secondary processing. Therefore, there is an urgent need for an automated cooling device to meet production requirements. Summary of the Invention

[0003] The purpose of this invention is to provide a cooling and shaping device for injection molded products before secondary processing, so as to solve the problems of low efficiency and failure to meet the needs of automated production in the existing cooling methods of injection molded products in the production line and the problem of manual cooling and shaping of injection molded products for secondary processing.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A rotary cooling and shaping device for injection molded parts and sprues includes:

[0006] The base has a through hole.

[0007] A drive mechanism is fixedly disposed below the base, and the output end of the drive mechanism corresponds to the position of the first through hole;

[0008] A first transmission component is connected to the output end of the drive device, and the drive device drives the first transmission component to move axially back and forth.

[0009] A rotating assembly includes a guide sleeve and a first rotating component. The guide sleeve has a second through hole, which corresponds to the position of the first through hole. The guide sleeve is fixedly mounted on the base. One end of the first transmission component passes through the second through hole and is movably connected to the first rotating component. The first rotating component is movably mounted on the upper end of the guide sleeve. The first transmission component moves axially back and forth to drive the first rotating component to rotate around its own axis.

[0010] A cooling plate is provided with a cooling bracket. The cooling plate is fixedly connected to the first rotating component and rotates around its own axis following the first rotating component. The first transmission component, the guide sleeve, the first rotating component, and the cooling plate are all coaxially arranged.

[0011] In some embodiments, the guide sleeve is provided with a plurality of positioning grooves, each positioning groove including a first limiting surface and a first guiding surface. The first rotating member is provided with a plurality of matching limiting bosses, each limiting boss cooperating with a corresponding plurality of positioning grooves. Each limiting boss is provided with a third guiding surface. When the limiting boss disengages from the first limiting surface of the positioning groove it is currently cooperating with, the limiting boss slides down to the first limiting surface of the next positioning groove under the guidance of the first guiding surface and the third guiding surface and abuts against it.

[0012] In some embodiments, a plurality of the positioning grooves are evenly distributed around the axis of the guide sleeve on the side of the guide sleeve.

[0013] In some embodiments, the rotating assembly further includes a guide boss disposed on the first transmission member and a first guide groove disposed on the guide sleeve.

[0014] Alternatively, a first guide groove may be provided on the first transmission member and a guide boss may be provided on the guide sleeve; wherein the guide boss is adapted to the first guide groove and the guide boss is capable of moving relative to the first guide groove.

[0015] In some embodiments, the guide boss is provided with a second guide surface, the inclination angle of the second guide surface being greater than or equal to the inclination angle of the third guide surface.

[0016] In some embodiments, the tilt angle of the third guide surface is greater than or equal to the tilt angle of the first guide surface.

[0017] In some embodiments, the first rotating member is provided with a third through hole, and a connecting shaft is provided in the third through hole. The connecting shaft connects the first rotating member and the first transmission member, and the first rotating member can rotate along the connecting shaft.

[0018] In some embodiments, an elastic element is provided between the connecting shaft and the cooling plate. One end of the elastic element is connected to the cooling plate, and the other end of the elastic element is connected to one end of the connecting shaft. When the first rotating member moves away from the guide sleeve, the elastic element is in a compressed or stretched state. When the limiting boss disengages from the first limiting surface, the elastic element returns to its initial state and drives the first rotating member to rotate.

[0019] In some embodiments, a bearing is provided at one end of the first transmission member near the first rotating member, and the outer circumference of the bearing is snapped and fixed to the inner wall of the first rotating member.

[0020] In some embodiments, the first abutting surface of the positioning groove extends to the first limiting surface adjacent to the positioning groove.

[0021] The beneficial effects of this invention are as follows:

[0022] By setting the cooling bracket on the cooling tray, the cooling tray is driven to rotate periodically under the cooperation of the drive mechanism, the first transmission component and the rotating component. This not only meets the cooling and molding requirements of the injection molded parts, but also facilitates the gripping and positioning of the robotic arms in the automated production line. It provides a reasonable time interval for the injection molded parts to be placed on the cooling tray for cooling and to be removed from the cooling tray to the next process, thereby improving efficiency and meeting the needs of production line automation.

[0023] By setting evenly distributed fixing grooves on the guide sleeve and setting a matching limiting boss on the first rotating part passing through the guide sleeve, the cooling bracket can achieve accurate rotation angle, making the positioning of the cooling bracket more accurate and facilitating the gripping of the robot arm in the automated production line without the need for secondary positioning. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of a cooling and shaping device for secondary processing of injection molded products according to the present invention;

[0025] Figure 2 This is a top view of a cooling and shaping device for injection-molded products before secondary processing, according to the present invention.

[0026] Figure 3 This is a front view of a cooling and shaping device for injection-molded products before secondary processing, according to the present invention.

[0027] Figure 4 This is a schematic diagram of the first rotating component of a cooling and shaping device for secondary processing of injection molded products according to the present invention, in the state of being disengaged from the guide sleeve.

[0028] Figure 5 This is a cross-sectional view at point AA of a cooling and shaping device for secondary processing of injection molded products according to the present invention;

[0029] Figure 6 This is a three-dimensional structural diagram of a guide sleeve for a cooling and shaping device for secondary processing of injection molded products according to the present invention;

[0030] Figure 7 This is a three-dimensional structural diagram of the first rotating component of a cooling and shaping device for secondary processing of injection molded products according to the present invention.

[0031] Figure 8 This is a cross-sectional view of the first rotating component of a cooling and shaping device for secondary processing of injection molded products according to the present invention.

[0032] Figure 9 This is a three-dimensional structural diagram of the first transmission component of a cooling and shaping device for secondary processing of injection molded products according to the present invention, located at one end inside the guide sleeve.

[0033] Explanation of reference numerals in the attached drawings: base 100, drive mechanism 200, first transmission component 300, guide boss 301, second guide surface 3011, threaded hole 302, rotating assembly 400, guide sleeve 401, positioning groove 4011, first limiting surface 40111, first guide surface 40112, first guide groove 4012, second through hole 4013, first rotating component 402, limiting boss 4021, third guide surface 40211, third through hole 4022, bearing 403, cooling plate 500, cooling bracket 501, connecting shaft 502. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings. In the description of this embodiment, unless otherwise stated, the terms "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the pressure forming mold box referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0035] like Figure 1-9 As shown, this invention provides a cooling and shaping device for injection-molded products before secondary processing, which mainly includes a base 100, a drive mechanism 200, a first transmission component 300, a rotating component 400, and a cooling plate 500.

[0036] The base 100 serves as the base for mounting the entire device, and it has a through hole. The drive mechanism 200 is fixed below the base 100, and its output end corresponds to the position of the through hole, so that the output end of the drive mechanism 200 can drive the first transmission member 300 to move axially. In this embodiment, the drive mechanism 200 is a cylinder. Optionally, the drive mechanism 200 can also be a servo motor, configured as a lead screw and slider structure, which can also achieve the purpose of axial movement of the first transmission member 300. It is understood that the type of drive mechanism 200 is not limited by this invention, as long as it can drive the first transmission member 300 to move axially.

[0037] One end of the first transmission member 300 is connected to the output end of the drive mechanism 200 through the first through hole, and the other end of the first transmission member 300 passes through the guide sleeve 401 and is movably connected to the first rotating member 402. The first rotating member 402 rotates relative to the first transmission member 300.

[0038] The rotating assembly 400 includes a guide sleeve 401 and a first rotating member 402. The guide sleeve 401 is fixedly mounted on the base 100 and has a second through hole 4013, the position of which corresponds to the position of the first through hole. The first rotating member 402 is movably mounted on the guide sleeve 401, meaning it can be separated from the guide sleeve 401. The first rotating member 402 is movably connected to one end of the first transmission member 300. When the first transmission member 300 moves axially, the first rotating member 402 can rotate around the axis of the guide sleeve 401. In this embodiment, the first rotating member 402 is detachably mounted on the upper end of the guide sleeve 401, and it separates from the guide sleeve 401 when it rotates. Optionally, the first rotating member 402 passes through the inner wall of the guide sleeve 401, meaning an extended sleeve is provided on the first rotating member 402 to match the inner wall of the guide sleeve 401.

[0039] Furthermore, to ensure the smooth rotation of the first rotating member 402, an elastic element can be provided on the first rotating member 402 or the cooling plate 500. One end of the elastic element is connected to the cooling plate 500, and the other end is connected to the upper end of the shaft 502. That is, when the first rotating member 402 rises, it will compress or stretch the elastic element. After the limiting boss 4021 disengages from the first limiting surface 40111, the elastic element returns to its initial state, driving the first rotating member 402 to move downward, thus promoting the rotation of the first rotating member 402. In this embodiment, the most preferred elastic element is a spring. Optionally, the elastic element can be a sheet or a deformable elastic plastic.

[0040] The cooling tray 500 is fixedly connected to the first rotating component 402. A cooling bracket 501 is provided on the cooling tray 500 so that the injection molded product can be placed on the cooling bracket 501 for natural cooling when it is taken out of the injection molding machine. The first rotating component 402 drives the cooling tray 500 to rotate, and the injection molded product placed on the cooling bracket 501 rotates once to cool naturally and return to its initial position, so that the robot arm can grab it for the next process.

[0041] Optionally, the first rotating component 402 can also be configured as a synchronous belt pulley structure, the first transmission component 300 is a transmission belt, and the drive mechanism 200 is a servo motor or a servo motor. By setting the servo motor or servo motor and adjusting the rotation period of the synchronous belt pulley, the final goal in the above embodiments can also be achieved.

[0042] In one embodiment, the guide sleeve 401 is provided with a plurality of positioning grooves 4011, and the first rotating member 402 is provided with a plurality of limiting bosses 4021, the shape of the limiting bosses 4021 being adapted to the shape of the positioning grooves 4011. Specifically, in this application, there are 8 positioning grooves 4011, which are evenly distributed on the side wall of the guide sleeve 401; and 4 limiting bosses 4021, which are evenly distributed on the side wall of the first rotating member 402. Optionally, the number of positioning grooves 4011 and the number of limiting bosses 4021 can be other numbers, specifically designed according to actual needs, and the number of limiting bosses 4021 is not limited. As the optimal implementation, the ratio of the number of positioning grooves 4011 to the number of limiting bosses 4021 is generally an integer ratio, and the limiting bosses 4021 are evenly distributed on the first rotating member 402. The positioning groove 4011 includes a first limiting surface 40111 and a first guiding surface 40112. The first limiting surface 40111 is vertically positioned, and when the cooling plate 500 is not rotating, one side of the limiting boss 4021 abuts against the first limiting surface 40111. The first guiding surface 40112 is inclined; in this application, the first guiding surface 40112 is an inclined plane, and its inclination direction is the same as the rotation direction of the cooling plate 500. When the cooling plate 500 rotates, the lower end of the limiting boss 4021 slides on the first guiding surface 40112 until one side of the limiting boss 4021 abuts against the first limiting surface 40111 of the next adjacent positioning groove 40111. It is understood that the structural shape of the first limiting surface 40111 is not limited; the existence of the first limiting surface 40111 is to limit the limiting boss 4021 of the first rotating component 402, ensuring that the injection molded part can return to its initial position after one cycle of rotation. Optionally, the first guide surface 40112 can be an arc-shaped surface structure or a planar structure with other degrees of inclination. It is sufficient that the limiting boss 4021 can abut against the first limiting surface 40111 under its own weight or under the action of external force.

[0043] In one embodiment, to enable the first rotating member 402 to rotate around the guide sleeve 401 under the action of the first transmission member 300, the rotating assembly 400 includes a guide boss 301 disposed on the first transmission member 300 and a first guide groove 4012 disposed on the guide sleeve. Specifically, the first guide groove 4012 is disposed on the side wall of the guide sleeve 401, and the groove opening of the first guide groove 4012 divides the first guide surface 40112; the guide boss 301 is disposed on the side wall of the first transmission member 300, the guide boss 301 is engaged in the first guide groove 4012, and the guide boss 301 can move axially relative to the first guide groove 4012; the first transmission member 300 is a shaft structure, and its diameter matches the diameter of the second through hole 4013 of the guide sleeve 401, to ensure that the first transmission member 300 only moves axially and does not swing, thus ensuring the stability and accuracy of the rotation of the cooling plate 500. In this application, the number of first guide grooves 4012 matches the number of positioning grooves 4011, which is 8. The number of guide bosses 301 matches the number of first guide grooves 4012, which is also 8. Optionally, the number of guide bosses 301 and first guide grooves 4012 may be less than 8, but there must be at least 1. It is only necessary to make the guide bosses 301 push the limiting bosses 4021 of the first rotating member 402 into the current positioning groove 4011 and separate them from the current first limiting surface 40111.

[0044] Optionally, the first guide groove 4012 can be disposed on the side wall of the first transmission member 300, and the guide boss 301 can be disposed on the side wall of the guide sleeve 401, with the guide boss 301 engaging with the first guide groove 4012. In this case, the structure that drives the first rotating member 402 to move axially and disengage from the first limiting surface 40111 is the first transmission member 300, which lifts the entire first rotating member 402, causing the limiting boss 4021 to disengage from the first limiting surface 40111. It is understandable that this arrangement requires a relatively long first guide groove 4012 to satisfy this structure.

[0045] In one embodiment, the number of cooling brackets 501 matches the number of positioning slots 4011, and the cooling brackets 501 are evenly distributed along the geometric center of the cooling plate 500. Specifically, in this embodiment, the cooling plate 500 is a regular geometric disk with its geometric center as the rotation center. Eight cooling brackets 501 are evenly distributed on the cooling plate 500, meaning the included angle between two adjacent cooling brackets 501 is 45°. The cooling brackets 501 are sequentially engaged with each positioning slot 4011 by the limiting boss 4021, and also rotate sequentially at 45-degree intervals, meaning that the positions of the cooling brackets 501 remain aligned after rotation. After one full rotation, the cooled injection-molded product returns to its initial position, facilitating gripping by the robotic arm without requiring secondary positioning. Optionally, the number of cooling brackets 501 may not match the number of positioning slots 4011; the number of cooling brackets 501 may be more or less than the number of positioning slots 4011.

[0046] In one embodiment, to facilitate better sliding of the limiting boss 4021 to the first guide surface 40112 after disengaging from the first limiting surface 40111, a second guide surface 3011 is provided on the guide boss 301. Specifically, in this embodiment, the inclination direction of the second guide surface 3011 is consistent with the inclination direction of the first guide surface 40112. The second guide surface 3011 is a plane with a certain inclination angle. In practical applications, the inclination angle of the second guide surface 3011 should be greater than or equal to the inclination angle of the third guide surface 40211, so that when the limiting boss 4021 disengages from the first limiting surface 40111, it can slide more quickly to the first guide surface 40112 of the adjacent positioning groove 4011 and abut against the first limiting surface 40111 of the adjacent positioning groove, thereby causing the cooling plate 500 to rotate to a preset position. Optionally, the first guide surface 40112 can also be configured as a curved surface structure or the guide boss 301 and the limiting boss 4021 can be configured as a line-surface mating structure. To further ensure that the limiting boss 4021 can smoothly abut against the first limiting surface 40111 under the action of the first guide surface 40112 after disengaging from the guide boss 301, a third guide surface 40211 is provided at the lower end of the limiting boss 4021. The third guide surface 40211 of the limiting boss 4021 has the same inclination angle as the first guide surface 40112 of the positioning groove 4011. Specifically, the third guide surface 40211 has a sloping structure and has the same inclination angle as the first guide surface 40112 and the second guide surface 3011, respectively, increasing the contact surface during the sliding process and avoiding stress concentration that could damage the first guide surface 40112 or the second guide surface 3011. Optionally, the inclination angle of the third guide surface 40211 can also be greater than the inclination angle of the first guide surface 40112.

[0047] In one embodiment, to ensure a sliding connection between the first transmission member 300 and the first rotating member 402, and to allow the first rotating member 402 to move axially while also rotating along its own axis, a third through hole 4022 is provided on the first rotating member 402, and a connecting shaft 502 is disposed within the third through hole 4022. Specifically, a threaded hole 302 is provided at one end of the first transmission member 300, and one end of the connecting shaft 502 is configured with an external thread structure. The externally threaded connecting shaft 502 is fixed to the threaded hole 302 at one end of the first transmission member 300, and the diameter of the connecting shaft 502 matches the diameter of the third through hole 4022, allowing the connecting shaft 502 to rotate or move axially within the third through hole 4022, preventing axial oscillation of the cooling plate 500, which would cause the cooling bracket 501 to fail to overlap after rotation. Furthermore, a bearing 403 is provided between the first rotating member 402 and the first transmission member 300. By providing the bearing 403, the rotation of the cooling plate 500 driven by the first rotating member 402 is made smoother. Specifically, the inner hole of bearing 403 is engaged with one end of the first transmission member 300, and the outer periphery of bearing 403 is engaged with the inner wall of the first rotating member 402.

[0048] In one embodiment, to simplify the structure and ensure stability during rotation, the first transmission component 300, guide sleeve 401, first rotating component 402, and cooling disk 500 are coaxially arranged. Specifically, the guide sleeve 401 and the first rotating component 402 are cylindrical, the first transmission component 300 is cylindrical, and the cooling disk 500 is a regular disc structure. In this embodiment, the outer diameter of a portion of the first transmission component 300 matches the inner diameter of the guide sleeve 401, preventing radial offset during axial movement of the first transmission component 300. The first rotating component 402 is coaxially arranged with the cooling disk 500, and a third through hole 4022 is provided on the first rotating component 402. It is fixed by a connecting shaft 502 with a diameter matching the third through hole 4022, ensuring that the cooling disk 500 does not shift during rotation.

[0049] In one embodiment, to ensure that the rotation cycle of the limiting boss 4021 is uninterrupted and that it can slide from the guide boss 301 to the first guide surface 40112 without the need for external force, the first guide surface 40112 of the positioning groove 4011 extends to the first limiting surface 40111 of the adjacent positioning groove 4011. That is, when the limiting boss 4021 disengages from the first limiting surface 40111, it can slide directly to the first guide surface 40112 of the next adjacent positioning groove 4011 under the guidance of the guide boss 301.

[0050] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A cooling and shaping device for injection-molded products before secondary processing, characterized in that, include: The base has a through hole. A drive mechanism is fixedly disposed below the base, and the output end of the drive mechanism corresponds to the position of the first through hole; A first transmission component is connected to the output end of the drive mechanism, and the drive mechanism drives the first transmission component to move axially back and forth. A rotating assembly includes a guide sleeve and a first rotating component. The guide sleeve has a second through hole, which corresponds to the position of the first through hole. The guide sleeve is fixedly mounted on the base. One end of the first transmission component passes through the second through hole and is movably connected to the first rotating component. The first rotating component is movably mounted on the upper end of the guide sleeve. The first transmission component moves axially back and forth to drive the first rotating component to rotate around its own axis. A cooling tray is provided with a cooling bracket. The cooling tray is fixedly connected to the first rotating member and rotates around its own axis following the first rotating member. The first transmission member, the guide sleeve, the first rotating member, and the cooling tray are all coaxially arranged. The guide sleeve is provided with a plurality of positioning grooves, each positioning groove including a first limiting surface and a first guiding surface. The first rotating member is provided with a plurality of matching limiting bosses, each limiting boss cooperating with a corresponding plurality of positioning grooves. Each limiting boss is provided with a third guiding surface. When the limiting boss disengages from the first limiting surface of the positioning groove it is currently cooperating with, the limiting boss slides down to the first limiting surface of the next positioning groove under the guidance of the first guiding surface and the third guiding surface and abuts against it. The rotating assembly further includes a guide boss disposed on the first transmission member and a first guide groove disposed on the guide sleeve, wherein the guide boss is adapted to the first guide groove and the guide boss is capable of moving relative to the first guide groove. The guide boss is provided with a second guide surface, and the inclination angle of the second guide surface is greater than or equal to the inclination angle of the third guide surface.

2. The cooling and shaping device for injection-molded products before secondary processing according to claim 1, characterized in that, Several of the positioning grooves are evenly distributed around the axis of the guide sleeve on the side of the guide sleeve.

3. A cooling and shaping device for injection-molded products before secondary processing, as described in claim 1, characterized in that, The tilt angle of the third guide surface is greater than or equal to the tilt angle of the first guide surface.

4. A cooling and shaping device for injection-molded products before secondary processing, as described in claim 1, characterized in that, The first rotating component is provided with a third through hole, and a connecting shaft is provided in the third through hole. The connecting shaft connects the first rotating component and the first transmission component, and the first rotating component can rotate along the connecting shaft.

5. A cooling and shaping device for injection-molded products before secondary processing, as described in claim 4, characterized in that, An elastic element is provided between the connecting shaft and the cooling plate. One end of the elastic element is connected to the cooling plate, and the other end of the elastic element is connected to one end of the connecting shaft. When the first rotating member moves away from the guide sleeve, the elastic element is in a compressed or stretched state. When the limiting boss disengages from the first limiting surface, the elastic element returns to its initial state and drives the first rotating member to rotate.

6. A cooling and shaping device for injection-molded products before secondary processing, as described in claim 3, is characterized in that... The first transmission component has a bearing at one end near the first rotating component, and the outer circumference of the bearing is snapped and fixed to the inner wall of the first rotating component.

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