Primary and secondary foaming device for PU foaming shock-proof handle of badminton racket

Abstract

The invention discloses a badminton racket PU foaming shock-proof handle primary and secondary foaming device which comprises a rack, stirring equipment and a foaming mold are arranged on the rack, the output end of the stirring equipment is provided with a first communicating pipe, and the input end of the foaming mold is provided with a second communicating pipe. A metering pump is mounted between the first communicating pipe and the second communicating pipe; the stirring equipment comprises a kettle body, the kettle body is communicated with a feeding pipe and a discharging pipe, a first motor is mounted at the upper end of the kettle body, a mounting shaft is mounted at the output end of the first motor, and the tail end of the mounting shaft extends into the kettle body and is provided with a rotating disc. The stirring device has the advantages that the structure is ingenious, the design is reasonable, materials at different positions in the kettle body can be fully stirred, the stirring efficiency and uniformity can be improved, the materials at different positions in the kettle body can be fully stirred, the stirring efficiency and uniformity are improved, the uniformity of foaming materials is ensured, and the foaming quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of badminton racket production equipment, in particular to a primary and secondary foaming device for a PU foaming shock-absorbing handle of a badminton racket. Background Art

[0002] Traditional badminton racket handles are usually made of materials such as rubber, which have limited shock absorption effect. During intense badminton sports, the hands will feel large vibrations, and long-term use may cause damage to the hands and affect the accuracy and stability of hitting the ball.

[0003] In order to improve the shock-absorbing performance of the handle of a badminton racket, PU foaming technology has gradually been applied to the production of the handle. However, there are some problems with the existing badminton racket PU foaming shock-absorbing handle production device. On the one hand, the stirring effect of the stirring equipment is not good, and it is difficult to fully mix the raw materials, resulting in unstable quality of the handle after foaming. For example, some stirring equipment can only perform simple rotation stirring, and cannot fully stir the raw materials at different positions, which is prone to insufficient mixing of local raw materials. On the other hand, the structure and performance of the foaming mold also need to be improved. The existing foaming mold has deficiencies in mold closing accuracy, heating uniformity, etc., which affects the foaming effect and shape accuracy of the handle. For example, the mold closing process of some foaming molds is not accurate enough, which easily leads to uneven foaming space, resulting in inconsistent thickness of the handle; and the heating device of some foaming molds cannot evenly heat the handle, resulting in uneven temperature distribution during the foaming process, affecting the foaming quality.

[0004] In addition, the existing equipment has a low degree of automation in the production process and requires a lot of manual intervention, which not only increases production costs but also reduces production efficiency. For example, manual operation is often required in the process of conveying and measuring raw materials, which is prone to errors; manual operation is also required in the process of opening and closing the mold and taking and placing the product, which is not only time-consuming and labor-intensive, but also poses certain safety hazards.

[0005] Therefore, we propose a badminton racket PU foaming shock-absorbing handle primary and secondary foaming device to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the problems in the prior art and to propose a primary and secondary foaming device for a PU foaming shock-absorbing handle of a badminton racket.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A primary and secondary foaming device for a PU foaming shock-absorbing handle of a badminton racket, comprising a frame, a stirring device and a foaming mold on the frame, a first connecting pipe being installed at the output end of the stirring device, a second connecting pipe being installed at the input end of the foaming mold, and a metering pump being installed between the first connecting pipe and the second connecting pipe;

[0009] The stirring device includes a kettle body, which is connected with a feed pipe and a discharge pipe, and a solenoid valve is installed on the feed pipe, and the first connecting pipe is connected with the discharge pipe, a first motor is installed on the upper end of the kettle body, and a mounting shaft is installed on the output end of the first motor, the end of the mounting shaft extends into the kettle body and is installed with a turntable, two limit columns are symmetrically installed on the inner bottom wall of the kettle body, and the two limit columns are slidably connected with a mounting plate, a wedge-shaped groove is opened in the mounting plate, and a second motor is installed in the wedge-shaped groove, a ball screw is installed on the output shaft of the second motor, a wedge-shaped seat is installed on the ball screw, and a stirring assembly is installed between the wedge seat and the turntable.

[0010] In the above-mentioned badminton racket PU foaming shock-absorbing handle primary and secondary foaming device, the stirring assembly includes a lower fixed seat, and the lower fixed seat is fixedly installed on the upper end surface of the wedge-shaped seat, the turntable is installed with an upper fixed seat, and a stirring shaft is commonly installed between the upper fixed seat and the lower fixed seat, and a plurality of stirring rods are evenly installed on the outer surface of the stirring shaft.

[0011] In the above-mentioned primary and secondary foaming device of the PU foaming shock-absorbing handle of the badminton racket, a lower rotating ball is clamped on the lower fixed seat, an upper rotating ball is clamped on the upper fixed seat, and the stirring shaft is fixedly connected to the lower rotating ball and the upper rotating ball.

[0012] In the above-mentioned badminton racket PU foaming shock-absorbing handle primary and secondary foaming device, the lower fixed seat is provided with a first spherical groove, and the lower rotating ball is clamped in the first spherical groove, and the depth of the first spherical groove is greater than the radius of the lower rotating ball;

[0013] The upper fixed seat is provided with a second spherical groove, and the upper rotating ball is clamped in the second spherical groove, and the depth of the second spherical groove is greater than the radius of the upper rotating ball.

[0014] In the above-mentioned primary and secondary foaming devices of the PU foaming shock-absorbing handle of the badminton racket, elastic barrier sheets are installed between both side walls of the wedge-shaped seat and the inner side walls of the wedge-shaped groove.

[0015] In the above-mentioned primary and secondary foaming devices for the PU foaming shock-absorbing handle of a badminton racket, the axis of the upper fixing seat does not coincide with the axis of the mounting shaft.

[0016] In the above-mentioned primary and secondary foaming device of the PU foaming shock-absorbing handle of the badminton racket, the foaming mold includes a lower mold base, and the lower mold base is installed on the upper end surface of the frame by a locking screw, and two guide pillars are symmetrically installed on the frame, and the upper end surfaces of the two guide pillars are commonly fixedly connected to a fixing frame, and a cylinder is fixedly connected to the fixing frame, and the output end of the cylinder passes through the fixing frame and is installed with an upper mold base, and the upper mold base is slidably connected to the two guide pillars.

[0017] In the above-mentioned badminton racket PU foaming shock-absorbing handle primary and secondary foaming device, a racket groove and a handle lower groove are provided on the lower mold base, an handle upper groove and a club groove are provided on the lower end surface of the upper mold base, a feed port is provided at one end of the handle lower groove away from the racket groove, an injection pipe is provided on the feed port, and the injection pipe is connected to the second connecting pipe.

[0018] In the above-mentioned badminton racket PU foaming shock-absorbing handle primary and secondary foaming device, a first arc-shaped cavity is opened on the lower mold base, and the center line of the first arc-shaped cavity coincides with the center line of the lower groove of the handle, and a first heater is installed in the first arc-shaped cavity. A second arc-shaped cavity is opened on the lower end surface of the upper mold base, and a second heater is installed in the second arc-shaped cavity, and the center line of the second arc-shaped cavity coincides with the center line of the upper groove of the handle.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The first motor drives the turntable, the upper fixed seat and the stirring shaft to rotate, and the mounting plate can move up and down along the limit column. In addition, the second motor drives the wedge-shaped seat to adjust the position of the stirring component, which greatly increases the complexity of stirring, can fully stir the materials at different positions inside the kettle, and improve the stirring efficiency and uniformity.

[0021] 2. The setting of the metering pump can accurately control the amount of raw materials output from the mixing equipment to the foaming mold, ensuring the consistency of the foaming amount of each handle and improving the stability of product quality.

[0022] 3. The cylinder pushes the upper die seat to move along the guide column, ensuring the mold closing accuracy of the upper die seat and the lower die seat, so that the upper groove of the handle and the lower groove of the handle as well as the club groove and the racket groove can be accurately matched to form a complete foaming space, ensuring the accurate foaming shape of the handle and racket parts.

[0023] 4. The first heater and the second heater heat the lower groove of the handle and the upper groove of the handle respectively, so that the foaming raw materials undergo foaming reaction at a uniform temperature, thereby improving the foaming quality and consistency of the product.

[0024] To sum up, the present invention has an ingenious structure and a reasonable design, and can fully stir the materials at different positions inside the kettle body, thereby improving the stirring efficiency and uniformity. It can fully stir the materials at different positions inside the kettle body, thereby improving the stirring efficiency and uniformity, thereby ensuring the uniformity of the foaming material and improving the foaming quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of the primary and secondary foaming devices of the PU foaming shock-absorbing handle of a badminton racket proposed by the present invention;

[0026] Figure 2 A schematic diagram of the internal structure of the kettle body of the primary and secondary foaming device of the PU foaming shock-absorbing handle of a badminton racket proposed by the present invention;

[0027] Figure 3 This is an enlarged view of the stirring rod structure in the primary and secondary foaming devices of the PU foaming shock-absorbing handle of a badminton racket proposed by the present invention;

[0028] Figure 4 This is an enlarged view of the wedge-shaped seat structure in the primary and secondary foaming devices of the PU foaming shock-absorbing handle of a badminton racket proposed by the present invention;

[0029] Figure 5 This is an enlarged view of the elastic barrier structure of the primary and secondary foaming devices of the PU foam shock-absorbing handle of a badminton racket proposed by the present invention.

[0030] Figure 6 This is an enlarged view of the structure of the foaming mold part in the primary and secondary foaming devices of the PU foaming shock-absorbing handle of a badminton racket proposed by the present invention;

[0031] Figure 7 This is an enlarged view of the lower mold base structure of the primary and secondary foaming devices of the PU foaming shock-absorbing handle of a badminton racket proposed by the present invention;

[0032] Figure 8 This is an enlarged view of the structure of the upper mold base part in the primary and secondary foaming devices of the PU foaming shock-absorbing handle of a badminton racket proposed by the present invention.

[0033] In the figure: 1 frame, 2 kettle body, 3 feed pipe, 4 first heater, 5 first motor, 6 metering pump, 7 discharge pipe, 8 second connecting pipe, 9 first connecting pipe, 10 cylinder, 11 fixed frame, 12 guide column, 13 upper die seat, 14 lower die seat, 15 mounting shaft, 16 injection pipe, 17 racket groove, 18 handle upper groove, 19 first arc cavity, 20 handle lower groove, 21 second heater, 22 second arc cavity, 23 ball screw, 24 turntable, 25 limit column, 26 mounting plate, 27 elastic barrier, 28 wedge seat, 29 lower fixed seat, 30 stirring rod, 31 wedge groove, 32 lower rotating ball, 33 upper rotating ball, 34 upper fixed seat. DETAILED DESCRIPTION

[0034] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0035] Example

[0036] Reference Figure 1-8 A primary and secondary foaming device for a PU foaming shock-absorbing handle of a badminton racket, comprising a frame 1, a stirring device and a foaming mold on the frame 1, a first connecting pipe 9 is installed at the output end of the stirring device, a second connecting pipe 8 is installed at the input end of the foaming mold, and a metering pump 6 is installed between the first connecting pipe 9 and the second connecting pipe 8;

[0037] The stirring device includes a kettle body 2, which is connected with a feed pipe 3 and a discharge pipe 7, and a solenoid valve is installed on the feed pipe 3, which can accurately control the opening and closing of the feed to ensure the accurate addition of the raw materials and avoid too much or too little raw materials from entering the kettle body, which affects the stirring effect and the subsequent foaming process, and the first connecting pipe 9 is connected with the discharge pipe 7, and a first motor 5 is installed at the upper end of the kettle body 2, and a mounting shaft 15 is installed at the output end of the first motor 5, and the end of the mounting shaft 15 extends into the kettle body 2 and is installed with a turntable 24, and the turntable 24 rotates under the drive of the first motor 5, driving the upper fixed seat 34 and the stirring shaft to move, so that the stirring rod 30 can perform a circular motion in the kettle body 2, thereby expanding the stirring range and improving the stirring efficiency, and two limiting columns 25 are symmetrically installed on the inner bottom wall of the kettle body 2, and the two limiting columns 25 are slidably connected with the mounting plate 26, and the limiting columns 25 are symmetrically connected with the mounting plate 26. 25 provides guidance for the up and down movement of the mounting plate 26, ensuring that the mounting plate 26 moves stably in the vertical direction, changes its position, and makes the stirring more comprehensive. A wedge-shaped groove 31 is provided in the mounting plate 26, and the wedge-shaped groove 31 provides installation space for the second motor and the ball screw 23. The second motor drives the ball screw 23 to rotate, so that the wedge-shaped seat 28 slides in the wedge-shaped groove, thereby adjusting the position of the stirring component, and can stir the raw materials at different positions in the kettle body 2 to improve the uniformity of stirring. A second motor is installed in the wedge-shaped groove 31, and a ball screw 23 is installed on the output shaft of the second motor. A wedge-shaped seat 28 is installed on the ball screw 23. Elastic barrier sheets 27 are installed between the two side walls of the wedge-shaped seat 28 and the inner side walls of the wedge-shaped groove 31. The elastic barrier sheets 27 prevent the raw materials from entering the wedge-shaped groove 31 and affecting the movement of the wedge-shaped seat 28, thereby ensuring the normal operation of the stirring component.

[0038] A stirring assembly is installed between the wedge-shaped seat 28 and the turntable 24. The stirring assembly includes a lower fixed seat 29, and the lower fixed seat 29 is fixedly installed on the upper end surface of the wedge-shaped seat 28. An upper fixed seat 34 is installed on the turntable 24. The axis of the upper fixed seat 34 does not coincide with the axis of the installation shaft 15. A stirring shaft is installed between the upper fixed seat 34 and the lower fixed seat 29. A plurality of stirring rods 30 are evenly installed on the outer surface of the stirring shaft. A lower rotating ball 32 is clamped on the lower fixed seat 29, and an upper rotating ball 33 is clamped on the upper fixed seat 34. The stirring shaft It is fixedly connected to the lower rotating ball 32 and the upper rotating ball 33. The lower fixed seat 29 is provided with a first spherical groove, and the lower rotating ball 32 is clamped in the first spherical groove, and the depth of the first spherical groove is greater than the radius of the lower rotating ball 32. The upper fixed seat 34 is provided with a second spherical groove, and the upper rotating ball 33 is clamped in the second spherical groove, and the depth of the second spherical groove is greater than the radius of the upper rotating ball 33. The lower rotating ball 32 and the upper rotating ball 33 enable the stirring shaft to rotate flexibly to adapt to various movements during the stirring process, thereby further improving the stirring effect.

[0039] The foaming mold includes a lower mold base 14, and the lower mold base 14 is installed on the upper end surface of the frame 1 through locking screws. Two guide pillars 12 are symmetrically installed on the frame 1. The upper end surfaces of the two guide pillars 12 are commonly fixedly connected with a fixing frame 11. The fixing frame 11 is fixedly connected with a cylinder 10. The output end of the cylinder 10 passes through the fixing frame 11 and is installed with an upper mold base 13. The upper mold base 13 is slidably connected to the two guide pillars 12. A racket groove 17 and a handle lower groove 20 are opened on the lower mold base 14. A handle upper groove 18 and a club groove are opened on the lower end surface of the upper mold base 13. A feed port is provided at one end of the lower groove 20 of the handle away from the racket groove 17, and an injection tube 16 is provided on the feed port, and the injection tube 16 is connected to the second connecting tube 8. A first arc-shaped cavity 19 is provided on the lower mold base 14, and the center line of the first arc-shaped cavity 19 coincides with the center line of the lower groove 20 of the handle, and a first heater 4 is installed in the first arc-shaped cavity 19. A second arc-shaped cavity 22 is provided on the lower end surface of the upper mold base 13, and a second heater 21 is installed in the second arc-shaped cavity 22, and the center line of the second arc-shaped cavity 22 coincides with the center line of the upper groove 18 of the handle.

[0040] The raw materials enter the kettle body 2 through the feed pipe 3, and the solenoid valve controls the opening and closing of the feed. The first motor 5 is started, and the first motor 5 drives the turntable 24 to rotate through the mounting shaft 15. During the rotation of the turntable 24, the upper fixed seat 34 and the upper rotating ball 33 are driven to rotate around the axis of the mounting shaft 15, and then the stirring shaft drives the stirring rod 30 to fully stir the raw materials in the kettle body 2. During the rotation of the stirring shaft and the stirring rod 30, the positions of the upper fixed seat 34 and the upper rotating ball 33 move, so that the mounting plate 26 is driven to move up and down along the limiting column 25 in the kettle body 2; the second motor installed in the wedge-shaped groove 31 is started, driving the ball screw 23 to rotate, so that the wedge-shaped seat 28 slides in the wedge-shaped groove 31, and the movement of the wedge-shaped seat 28 drives the lower fixed support 29 and the lower rotating ball 33 to move, so that the position of the entire stirring assembly can be adjusted to ensure that the stirring assembly stirs the materials at different positions in the kettle body 2. The elastic barrier sheet 27 prevents the raw materials from entering the wedge-shaped groove 31 and affecting the movement of the wedge-shaped seat 28, further increasing the complexity and uniformity of stirring.

[0041] A badminton racket is placed in the racket groove 17, and the evenly stirred raw materials pass through the discharge pipe 7, the first connecting pipe 9, the metering pump 6 and the second connecting pipe 8, and finally enter the foaming mold through the injection pipe 16. The cylinder 10 is started to push the upper mold base 13 to move downward along the guide column 12, so that the upper mold base 13 and the lower mold base 14 are molded together. At this time, the handle upper groove 18 on the lower end surface of the upper mold base 13 and the handle lower groove 20 on the lower mold base 14 together form the foaming space of the handle, and the club groove and the racket groove 17 form the space of the racket part. The first heater 4 and the second heater 21 heat the handle lower groove 20 and the handle upper groove 18 respectively, so that the injected raw materials undergo foaming reaction at a certain temperature. After the foaming is completed, the cylinder 10 drives the upper mold base 13 to rise, the mold is opened, and the foamed badminton racket PU foam shock-absorbing handle is taken out.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A primary and secondary foaming device for a PU foaming shock-absorbing handle of a badminton racket, comprising a frame (1), Features: The frame (1) is provided with a stirring device and a foaming mold, wherein the output end of the stirring device is provided with a first connecting pipe (9), the input end of the foaming mold is provided with a second connecting pipe (8), and a metering pump (6) is installed between the first connecting pipe (9) and the second connecting pipe (8); The stirring device comprises a kettle (2), the kettle (2) is connected with a feed pipe (3) and a discharge pipe (7), the feed pipe (3) is provided with a solenoid valve, and a first connecting pipe (9) is connected with the discharge pipe (7), a first motor (5) is provided at the upper end of the kettle (2), a mounting shaft (15) is provided at the output end of the first motor (5), a distal end of the mounting shaft (15) extends into the kettle (2) and is provided with a rotating disk (24), and the kettle (2) Two limiting columns (25) are symmetrically mounted on the inner bottom wall, and a mounting plate (26) is slidably connected to the two limiting columns (25). A wedge-shaped groove (31) is provided in the mounting plate (26), and a second motor is mounted in the wedge-shaped groove (31). A ball screw (23) is mounted on the output shaft of the second motor, and a wedge-shaped seat (28) is mounted on the ball screw (23). A stirring assembly is mounted between the wedge-shaped seat (28) and the rotating disk (24).

2. A badminton racket PU foaming shock-absorbing handle primary and secondary foaming device according to claim 1, Features: The stirring assembly comprises a lower fixed seat (29), and the lower fixed seat (29) is fixedly mounted on the upper end surface of the wedge-shaped seat (28); an upper fixed seat (34) is mounted on the turntable (24); a stirring shaft is mounted between the upper fixed seat (34) and the lower fixed seat (29); and a plurality of stirring rods (30) are evenly mounted on the outer surface of the stirring shaft.

3. A primary and secondary foaming device for a PU foaming shock-absorbing handle of a badminton racket according to claim 2, Features: A lower rotating ball (32) is clamped on the lower fixed seat (29), an upper rotating ball (33) is clamped on the upper fixed seat (34), and the stirring shaft is fixedly connected to the lower rotating ball (32) and the upper rotating ball (33).

4. A primary and secondary foaming device for a PU foaming shock-absorbing handle of a badminton racket according to claim 3, Features: The lower fixed seat (29) is provided with a first spherical groove, and the lower rotating ball (32) is clamped in the first spherical groove, and the depth of the first spherical groove is greater than the radius of the lower rotating ball (32); The upper fixed seat (34) is provided with a second spherical groove, and the upper rotating ball (33) is clamped in the second spherical groove, and the depth of the second spherical groove is greater than the radius of the upper rotating ball (33).

5. A badminton racket PU foaming shock-absorbing handle primary and secondary foaming device according to claim 2, Features: Elastic barrier sheets (27) are installed between both side walls of the wedge-shaped seat (28) and the inner side wall of the wedge-shaped groove (31).

6. A badminton racket PU foaming shock-absorbing handle primary and secondary foaming device according to claim 2, Features: The axis of the upper fixing seat (34) does not coincide with the axis of the mounting shaft (15).

7. A badminton racket PU foaming shock-absorbing handle primary and secondary foaming device according to claim 1, Features: The foaming mold comprises a lower mold base (14), and the lower mold base (14) is mounted on the upper end surface of a frame (1) by means of locking screws. Two guide pillars (12) are symmetrically mounted on the frame (1). The upper end surfaces of the two guide pillars (12) are commonly fixedly connected to a fixing frame (11). The fixing frame (11) is fixedly connected to a cylinder (10). The output end of the cylinder (10) passes through the fixing frame (11) and is mounted with an upper mold base (13). The upper mold base (13) is slidably connected to the two guide pillars (12).

8. A primary and secondary foaming device for a PU foaming shock-absorbing handle of a badminton racket according to claim 7, Features: The lower die seat (14) is provided with a racket groove (17) and a handle lower groove (20), the lower end surface of the upper die seat (13) is provided with a handle upper groove (18) and a club groove, the handle lower groove (20) is provided with a feed port at one end away from the racket groove (17), the feed port is plugged with an injection pipe (16), and the injection pipe (16) is connected to the second connecting pipe (8).

9. A primary and secondary foaming device for a PU foaming shock-absorbing handle of a badminton racket according to claim 8, Features: The lower die base (14) is provided with a first arc-shaped cavity (19), and the center line of the first arc-shaped cavity (19) coincides with the center line of the lower groove (20) of the handle, and a first heater (4) is installed in the first arc-shaped cavity (19). The lower end surface of the upper die base (13) is provided with a second arc-shaped cavity (22), and a second heater (21) is installed in the second arc-shaped cavity (22), and the center line of the second arc-shaped cavity (22) coincides with the center line of the upper groove (18) of the handle.

Images