Plastic part press-fitting mechanism

Abstract

The utility model discloses a plastic part press fitting mechanism which is characterized in that the plastic part press fitting mechanism comprises a support, a rotating disc, a driving part and a material pressing part, and the driving part drives the rotating disc to rotate through a rotating shaft; a plurality of material receiving grooves are formed in the outer edge of the top face of the rotary disc, a plurality of blocking assemblies matched with the material receiving grooves are further arranged on the bottom face of the rotary disc, and each blocking assembly is arranged below the corresponding material receiving groove. The material pressing part comprises a pressing rod and a vertical air cylinder, the pressing rod is parallel to the rotating shaft, the vertical air cylinder is installed on the support, and the top of the pressing rod is connected with an output shaft at the bottom of the vertical air cylinder; the driving part drives the turntable to rotate and enables any one of the material receiving grooves to be arranged right opposite to the pressing rod; the vertical air cylinder drives the pressing rod to move vertically. According to the utility model, the press-fitting efficiency is improved, and the labor intensity of operators is reduced.

Description

Technical Field

[0001] This utility model relates to the field of plastic parts manufacturing and processing, and more particularly to a plastic parts pressing mechanism. Background Technology

[0002] Automobiles are a common mode of transportation, and they contain many plastic parts, most of which are manufactured using injection molding. Some plastic modules are assembled from multiple parts; some are connected by bolts, while others are assembled using press fitting. In conventional press fitting processes, the plastic parts are mostly placed manually in their designated positions, then the part to be pressed is placed on the pressing area, and finally, a cylinder drives a pressure rod to press down, achieving the pressing effect. This press fitting method is inefficient and involves high labor intensity for operators. Therefore, improving press fitting efficiency and reducing operator labor intensity is a direction that those skilled in the art need to explore. Summary of the Invention

[0003] The purpose of this invention is to provide a plastic part pressing mechanism, which improves pressing efficiency and reduces the labor intensity of operators.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a plastic part pressing mechanism, including a bracket, a turntable, a driving unit and a pressing unit, wherein the center of the top surface of the turntable is rotatably connected to the bracket via a rotating shaft, and the driving unit drives the turntable to rotate via the rotating shaft;

[0005] The turntable is provided with a plurality of material receiving grooves at the outer edge of its top surface, and a plurality of blocking components matching the material receiving grooves are provided on the bottom surface of the turntable, with each blocking component being disposed below one of the material receiving grooves.

[0006] The pressing part includes a pressing rod and a vertical cylinder. The pressing rod is arranged parallel to the rotating shaft, and the vertical cylinder is mounted on the bracket. The top of the pressing rod is connected to the output shaft at the bottom of the vertical cylinder.

[0007] The drive unit drives the turntable to rotate and arranges any of the receiving slots to be directly opposite the pressure rod.

[0008] The vertical cylinder drives the pressure rod to move vertically, so that the bottom of the pressure rod passes through one of the receiving grooves below and is positioned directly below the blocking assembly, or so that the pressure rod moves upward to above the turntable.

[0009] In the above technical solution, multiple vertical notches are arranged around the outer edge of the turntable, and the top and bottom of the vertical notches are respectively connected to the top and bottom surfaces of the turntable; multiple positioning components corresponding to the vertical notches are installed on the outer edge of the turntable, and the positioning components include U-shaped plates. The U-shaped plates are provided with U-shaped grooves that open towards the axis of the turntable. The inner end of the U-shaped plate is installed on the top surface of the turntable, and the vertical notches are set opposite to the U-shaped grooves. The inner wall of the U-shaped grooves and the vertical notches form the receiving groove.

[0010] In the above technical solution, an inner baffle is installed on the bottom surface of the turntable below each vertical notch. The outer side of the inner baffle is flush with the inner wall of the vertical notch. The bottom outer side of the U-shaped plate is provided with a downward extending outer baffle. The inner surface of the outer baffle is flush with the inner wall of the U-shaped groove. The outer baffle is positioned directly opposite the inner baffle.

[0011] In the above technical solution, each of the blocking components is installed on the bottom surface of the turntable at the inner end of one of the inner baffles. The blocking component includes a mounting block and two rotating plates symmetrically installed on the outer end face of the mounting block. The tops of the two rotating plates are rotatably connected to the outer end face of the mounting block via a connecting shaft. A limiting wheel is rotatably installed on the outer end face of the bottom of the rotating plate. The limiting wheel is located directly below the receiving groove, and the limiting wheels on the two rotating plates are respectively located on both sides of the inner baffle.

[0012] In the above technical solution, an arc-shaped groove is provided on each side of the inner baffle, and each arc-shaped groove is positioned opposite a limiting wheel;

[0013] It also includes a reset component that drives the rotating plate to rotate. The reset component drives the rotating plate to rotate and causes the outer surface of the limiting wheel to abut against the inner wall of the arc-shaped groove of the inner baffle.

[0014] In the above technical solution, the reset component consists of two torsion springs, with one torsion spring mounted on each of the connecting shafts. One end of the torsion spring abuts against the bottom surface of the turntable, and the other end of the torsion spring abuts against the side wall of the rotating plate.

[0015] Alternatively, the reset element is a tension spring, and the torsion spring is disposed on the inner side of the inner baffle, with both ends of the tension spring connected to the two rotating plates respectively.

[0016] In the above technical solution, the rotating plate is a V-shaped structure with an opening facing the inner baffle.

[0017] In the above technical solution, the driving unit is a motor assembly, and the output shaft at the bottom of the motor assembly is connected to the top of the rotating shaft.

[0018] In the above technical solution, the cylinder is located on the front side of the drive unit, and the middle part of the pressure rod is vertically connected to the bracket.

[0019] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0020] 1. In this utility model, a rotatable turntable is set up with multiple receiving slots on the turntable and a blocking component is set below the receiving slots. The product can be fed into the receiving slots one by one by the feeding device, and the blocking component limits the product to prevent it from falling. Then, the rotating turntable rotates the receiving slot containing the product to the bottom of the pressure rod. The pressure rod presses down to directly press the product onto another product that needs to be assembled below, realizing fast and automated pressing of the product, effectively reducing the labor intensity of the operator and improving the pressing efficiency.

[0021] 2. In this utility model, the blocking component can prevent the product from falling downwards, and after the product is subjected to the pressure of the pressure bar, the product can push the blocking component away and allow the product to pass normally, ensuring the pressing effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure in Embodiment 1 of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the blocking component and U-shaped plate installed on the turntable in Embodiment 1 of this utility model;

[0024] Figure 3 This is a schematic diagram of a set of blocking components and a U-shaped plate installed on a turntable in Embodiment 1 of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of a set of blocking components and the connection between the U-shaped plate and the turntable in Embodiment 1 of this utility model;

[0026] Figure 5 This is a three-dimensional structural diagram of the blocking component in Embodiment 1 of this utility model (with an inner baffle installed);

[0027] Figure 6 This is a schematic diagram of the end face structure of the blocking component in Embodiment 1 of this utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the U-shaped plate and the outer baffle in Embodiment 1 of this utility model.

[0029] The components are: 1. bracket; 2. turntable; 3. drive unit; 4. rotating shaft; 5. receiving groove; 6. blocking assembly; 7. pressure rod; 8. vertical cylinder; 9. vertical notch; 10. U-shaped plate; 11. U-shaped groove; 12. inner baffle; 13. outer baffle; 14. mounting block; 15. rotating plate; 16. connecting shaft; 17. limit wheel; 18. arc groove; 19. reset component. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0031] Example 1: See Figure 1-7 As shown, a plastic part pressing mechanism includes a bracket 1, a turntable 2, a drive unit 3, and a pressing unit. The top surface of the turntable 2 is rotatably connected to the bracket 1 via a rotating shaft 4. The drive unit 3 drives the rotating shaft 4 to rotate, and the rotating shaft 4 drives the turntable 2 to rotate.

[0032] The turntable 2 is provided with a plurality of material receiving grooves 5 at the outer edge of the top surface, and the turntable 2 is also provided with a plurality of blocking components 6 that match the material receiving grooves 5 on the bottom surface, with each blocking component 6 being disposed below one of the material receiving grooves 5.

[0033] The pressing part includes a pressing rod 7 and a vertical cylinder 8. The pressing rod 7 is arranged parallel to the rotating shaft 4, and the vertical cylinder 8 is mounted on the bracket 1. The top of the pressing rod 7 is connected to the output shaft at the bottom of the vertical cylinder 8.

[0034] The drive unit 3 drives the turntable 2 to rotate, and causes any of the receiving grooves 5 to rotate to below the pressure rod 7 and be positioned directly opposite the pressure rod 7;

[0035] The vertical cylinder 8 drives the pressure rod 7 to move vertically, so that the bottom of the pressure rod 7 passes through one of the receiving grooves 5 below and is positioned directly below the blocking assembly 6, or so that the pressure rod 7 moves upward to above the turntable 2.

[0036] In this embodiment, taking the grille of an automotive air conditioning vent as an example, the grille consists of two side plates and multiple grille panels disposed between the two side plates. The ends of the grille panels are inserted into corresponding slots on the side plates. During assembly, a vibrating feeding plate is used to feed the grille panels. The vibrating feeding plate automatically sorts and feeds the materials, which are then conveyed through a feeding chute. The discharge end of the feeding chute is located directly above a receiving groove, and this discharge end is beside the pressure bar. A conveying mechanism is set below the turntable below the pressure bar for conveying the side plates. When the side plates are conveyed to the turntable directly below the pressure bar, the conveying mechanism pauses. After each product (grille panel) is conveyed by the feeding chute, it falls into the receiving groove, where its bottom is limited by a blocking component. Multiple receiving grooves are arranged around the turntable. Each time the drive unit rotates by an angle, the receiving trough rotates by an angle, moving it to the position of the side receiving trough. This cycle repeats, so each time the turntable rotates by an angle, the side receiving trough with the product rotates to directly below the pressure rod. Then, the output shaft of the vertical cylinder extends, driving the push rod to press down. The push rod presses against the top of the product and pushes the product down to assemble with the side plate's snap-fit. After assembly, the top of the product is directly below the blocking component. Then, the output shaft of the vertical cylinder retracts, driving the pressure rod to move upward and to directly above the turntable. At this point, the turntable rotates an angle, and another receiving trough carrying the product rotates to directly below the pressure bar. Meanwhile, the receiving trough from which the product was delivered rotates to directly below the discharge end of the feeding chute. The discharge end of the feeding chute releases another product into the empty receiving trough. The conveyor line below then moves a distance so that another latch on the side plate faces the receiving trough (or moves to the next assembly station, where the next pressing mechanism presses the next product onto the side plate). This process continues until the next product is pressed, and so on. This method offers high pressing efficiency and low operator workload. In this embodiment, only the air outlet grille is used as an example; this pressing method is also used for other similar products requiring pressing.

[0037] See Figure 3 , 4 As shown, the outer edge of the turntable 2 has multiple vertical notches 9 arranged around it. The top and bottom of the vertical notches 9 are connected to the top and bottom surfaces of the turntable 2, respectively. Multiple positioning components corresponding to the vertical notches 9 are installed on the outer edge of the turntable 2. The positioning components include U-shaped plates 10. The U-shaped plates 10 are provided with U-shaped grooves 11 that open towards the axis of the turntable 2. The inner end of the U-shaped plates 10 is installed on the top surface of the turntable 2. The vertical notches 9 are positioned opposite the U-shaped grooves 11. The inner wall of the U-shaped grooves 11 and the vertical notches 9 form the receiving groove 5.

[0038] In this embodiment, a receiving groove is directly constructed using a vertical notch and a positioning component with a U-shaped groove. In this method, the vertical notch is directly machined on the outer edge of the turntable, which is more convenient. Subsequently, the positioning component is locked to the top of the turntable using bolts. This structure facilitates installation, disassembly, and maintenance. At the same time, it is also convenient to adjust the distance between the U-shaped groove and the vertical notch. By replacing the positioning component with a U-shaped notch of different sizes, it can be applied to receiving and positioning products within a certain size range, thus having a wider range of applications and lower costs.

[0039] See Figure 3-7 As shown, an inner baffle 12 is installed on the bottom surface of the turntable 2 below each vertical notch 9. The outer side of the inner baffle 12 is flush with the inner wall of the vertical notch 9. An outer baffle 13 extending downward is provided on the outer side of the bottom of the U-shaped plate 10. The inner surface of the outer baffle 13 is flush with the inner wall of the U-shaped groove 11. The outer baffle 13 is positioned directly opposite the inner baffle 12.

[0040] To reduce costs, the turntable is made relatively thin. To ensure stable product positioning and prevent the product from falling or shaking during the pressing process by the pressure rod, thus guaranteeing accurate product assembly, inner and outer baffles are installed to limit the product's inner and outer sides. The other two sides are limited by the sides of the U-shaped groove, making the receiving groove a long strip structure that fits the product. This ensures the vertical movement of the product during the pressing process by the pressure rod, guaranteeing assembly effect and quality.

[0041] See Figure 4-7 As shown, each of the blocking components 6 is installed on the bottom surface of the turntable 2 at the inner end of one of the inner baffles 12. The blocking component 6 includes a mounting block 14 and two rotating plates 15 symmetrically installed on the outer end face of the mounting block 14. The tops of the two rotating plates 15 are rotatably connected to the outer end face of the mounting block 14 via a connecting shaft 16. A limiting wheel 17 is rotatably installed on the outer end face of the bottom of the rotating plate 15. The limiting wheel 17 is located directly below the receiving groove 5, and the limiting wheels 17 on the two rotating plates 15 are respectively located on both sides of the inner baffle 12. The plane of the outer end of the limiting wheel is located outside the plane of the outer end of the inner baffle, that is, the outer end of the limiting wheel is directly opposite the distance between the inner baffle and the outer baffle.

[0042] An arc-shaped groove 18 is provided on each side of the inner baffle 12, and each arc-shaped groove 18 is positioned opposite a limiting wheel 17.

[0043] The system also includes a reset member 19 that drives the rotating plate 15 to rotate. The reset member 19 drives the rotating plate 15 to rotate and causes the outer surface of the limiting wheel 17 to abut against the inner wall of the arc groove 18 of the inner baffle 12.

[0044] In this embodiment, after the product falls into the receiving trough from above, it automatically moves downwards under its own weight. Due to the presence of the reset component, the bottom of the rotating plate moves towards the inner baffle, causing the limiting wheel to abut against the inner wall of the arc-shaped groove. At this time, the distance between the two limiting wheels is less than the width of the product. Thus, after the product falls into the receiving trough, its bottom is limited by the two limiting wheels, preventing it from falling downwards. When the pressure rod applies downward pressure to the product, the product exerts a thrust on the outer surface of the limiting wheel, causing it to move to the side. This deforms the reset component and causes the rotating plate to rotate, simultaneously moving the limiting wheel away from the inner baffle. After the product has completely passed through the two limiting wheels, the reset component pulls the rotating plate to rotate, causing the limiting wheel to abut against the side wall of the push rod. When the push rod moves upwards and disengages from the limiting wheel, the reset component continues to drive the rotating plate to rotate, causing the limiting wheel to abut against the inner wall of the arc-shaped groove, thus limiting the next product.

[0045] Among them, the reset component has a variety of structures. In this utility model, there are two types. The first type is that the reset component consists of two torsion springs. Each of the connecting shafts is equipped with a torsion spring. One end of the torsion spring abuts against the bottom surface of the turntable, and the other end of the torsion spring abuts against the side wall of the rotating plate.

[0046] The second method involves a tension spring as the reset component, with the torsion spring positioned inside the inner side of the inner baffle. Both ends of the tension spring are connected to the two rotating plates respectively. In this embodiment, the tension spring serves as the reset component, offering a simple structure and facilitating maintenance and replacement.

[0047] See Figure 5 , 6 As shown, the rotating plate 15 has a V-shaped structure with an opening towards the inner baffle 12. This structure reduces the space occupied by the mounting block in the height area, reduces the material used for the mounting block, and lowers costs.

[0048] See Figure 1 As shown, the drive unit 3 is a motor assembly, and the output shaft at the bottom of the motor assembly is connected to the top of the rotating shaft. The motor assembly can be a single motor or a combination of a motor and a reducer. In this embodiment, a single motor, specifically a stepper motor, is used to intermittently and stably drive the turntable to a predetermined angle.

[0049] The cylinder is located at the front of the drive unit, and the middle part of the pressure rod is vertically connected to the support. The vibrating feed plate is located on the left or right side of the cylinder. The installation of the cylinder and motor assembly will not cause interference, ensuring that both can work independently and in conjunction normally.

Claims

1. A plastic part pressing mechanism, characterized in that: It includes a support, a turntable, a drive unit, and a pressing unit. The center of the top surface of the turntable is rotatably connected to the support via a rotating shaft, and the drive unit drives the turntable to rotate via the rotating shaft. The turntable is provided with a plurality of material receiving grooves at the outer edge of its top surface, and a plurality of blocking components matching the material receiving grooves are provided on the bottom surface of the turntable, with each blocking component being disposed below one of the material receiving grooves. The pressing part includes a pressing rod and a vertical cylinder. The pressing rod is arranged parallel to the rotating shaft, and the vertical cylinder is mounted on the bracket. The top of the pressing rod is connected to the output shaft at the bottom of the vertical cylinder. The drive unit drives the turntable to rotate and arranges any of the receiving slots to be directly opposite the pressure rod. The vertical cylinder drives the pressure rod to move vertically, so that the bottom of the pressure rod passes through one of the receiving grooves below and is positioned directly below the blocking assembly, or so that the pressure rod moves upward to above the turntable.

2. The plastic part pressing mechanism according to claim 1, characterized in that: The outer edge of the turntable has multiple vertical notches arranged around it, and the top and bottom of the vertical notches are connected to the top and bottom surfaces of the turntable, respectively. Multiple positioning components corresponding to the vertical notches are installed on the outer edge of the turntable. Each positioning component includes a U-shaped plate with a U-shaped groove opening towards the axis of the turntable. The inner end of the U-shaped plate is installed on the top surface of the turntable. The vertical notches are positioned opposite the U-shaped grooves, and the inner wall of the U-shaped grooves and the vertical notches form the receiving groove.

3. The plastic part pressing mechanism according to claim 2, characterized in that: An inner baffle is installed on the bottom surface of the turntable below each vertical notch. The outer side of the inner baffle is flush with the inner wall of the vertical notch. An outer baffle extending downward is provided on the bottom outer side of the U-shaped plate. The inner surface of the outer baffle is flush with the inner wall of the U-shaped groove. The outer baffle is positioned directly opposite the inner baffle.

4. The plastic part pressing mechanism according to claim 3, characterized in that: Each of the aforementioned blocking components is mounted on the bottom surface of a turntable at the inner end of one of the inner baffles. The blocking component includes a mounting block and two rotating plates symmetrically mounted on the outer end face of the mounting block. The tops of the two rotating plates are rotatably connected to the outer end face of the mounting block via a connecting shaft. A limiting wheel is rotatably mounted on the outer end face of the bottom of each rotating plate. The limiting wheel is located directly below the receiving groove, and the limiting wheels on the two rotating plates are respectively located on both sides of the inner baffle.

5. The plastic part pressing mechanism according to claim 4, characterized in that: The inner baffle is provided with an arc-shaped groove on each side, and each arc-shaped groove is positioned opposite a limiting wheel. It also includes a reset component that drives the rotating plate to rotate. The reset component drives the rotating plate to rotate and causes the outer surface of the limiting wheel to abut against the inner wall of the arc-shaped groove of the inner baffle.

6. The plastic part pressing mechanism according to claim 5, characterized in that: The reset component consists of two torsion springs, with one torsion spring mounted on each of the connecting shafts. One end of the torsion spring rests against the bottom surface of the turntable, and the other end of the torsion spring rests against the side wall of the rotating plate. Alternatively, the reset element is a tension spring, and the torsion spring is disposed on the inner side of the inner baffle, with both ends of the tension spring connected to the two rotating plates respectively.

7. The plastic part pressing mechanism according to claim 4, characterized in that: The rotating plate has a V-shaped structure that opens towards the inner baffle.

8. The plastic part pressing mechanism according to claim 1, characterized in that: The drive unit is a motor assembly, and the output shaft at the bottom of the motor assembly is connected to the top of the rotating shaft.

9. The plastic part pressing mechanism according to claim 1, characterized in that: The cylinder is located on the front side of the drive unit, and the middle part of the pressure rod is vertically connected to the bracket.

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