A rotating arm for rotational molding machine production

Abstract

The present invention discloses a rotating arm for rotomolding machine production, and relates to the technical field of rotomolding machine rotating arms. The rotating arm for rotomolding machine production comprises a frame, a shaft sleeve is fixedly installed on the top of the frame, a drive shaft is movably installed inside the shaft sleeve, a drive assembly is provided on the outside of the drive shaft, and a rotating arm is fixedly installed on one end of the drive shaft. The rotating arm for rotomolding machine production is achieved by pulling a sleeve outward along the outside of a positioning rod, rotating a positioning pin at one end of the sleeve close to the positioning rod to engage with a positioning hole on the top surface of the positioning rod, thereby positioning the sleeve, thereby being able to adjust different lengths to adapt to molds of different sizes, thereby increasing the applicability of the rotomolding machine, and driving the bidirectional screw to rotate by rotating the turntable, and the bidirectional screw drives the slider to move along the outside of the bidirectional screw, which is mainly used to drive the movement of the splint, thereby clamping the mold, and can clamp and fix molds of different widths.

Description

Technical Field

[0001] The invention relates to the technical field of rotational molding machine rotating arms, in particular to a rotational molding machine production rotating arm. Background Art

[0002] Roto-molding machine is a kind of plastic equipment that uses plastic powder to make hollow plastic products. It mainly drives the rotational molding mold after uniform heating to rotate through a working arm. The rotational molding arm has "L" shape, straight arm, etc. Its main function is to make the molten plastic powder in the rotational molding mold evenly coated and adhered to the entire inner surface of the rotational molding mold under the action of gravity, so that the rotational molding product is formed. After cooling and shaping, the mold can be opened to remove the finished product. The mold often needs to be fixed before high-temperature baking.

[0003] However, the existing rotational molding machine arm has a single function and can only fix molds of one size. Especially when baking molds with larger lengths and widths, larger equipment is usually required for fixing. When fixing the mold, the operation is relatively cumbersome, and the existing rotation arm size is fixed and difficult to adjust, resulting in a small scope of application and increased production costs. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In view of the shortcomings of the existing technology, the present invention provides a rotating arm for rotational molding machine production, which solves the problems that the traditional rotating arm has a single size, no adjustment function, low applicability, and cumbersome and inconvenient mold fixing.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A rotating arm for a rotational molding machine, comprising a frame, a shaft sleeve 1 fixedly mounted on the top of the frame, a drive shaft movably mounted inside the shaft sleeve 1, a drive assembly provided on the outside of the drive shaft, a rotating arm fixedly mounted on one end of the drive shaft, a positioning rod symmetrically provided on one end of the rotating arm, a sleeve sleeved on the outside of the positioning rod, and a telescopic rod inserted into the inside of the sleeve;

[0008] A transmission component 1 is provided in the middle of the sleeve, a rotating box is provided at one end of the telescopic rod, a transmission component 2 is provided in the middle of the rotating box, a positioning component is provided on the outside of the sleeve, a connecting column is provided on the inside of the rotating box, a mold frame is fixedly installed on one end of the connecting column, and a clamping component is provided on the inner wall of the mold frame.

[0009] Furthermore, the drive assembly includes a second sleeve, a connecting ring, and a motor. The second sleeve is movably mounted on the outside of the drive shaft, the connecting ring is fixedly mounted on the outside of the second sleeve, and the motor is fixedly mounted on the inside of the connecting ring.

[0010] Furthermore, the transmission component 1 includes a positioning transmission rod, a rotating shaft 1, and a rotating shaft 2. The positioning transmission rod is movably installed on the inner wall of the sleeve. The rotating shaft 1 is inserted into one end of the positioning transmission rod, and the rotating shaft 2 is inserted into the other end of the positioning transmission rod.

[0011] Furthermore, the second transmission component includes a bevel gear and a shaft seat, the shaft seat is movably mounted on the inner wall of the rotating box, and the bevel gear is fixedly mounted on the top of the shaft seat.

[0012] Furthermore, the positioning assembly includes a positioning hole and a positioning pin. The positioning hole is opened on the surface of the positioning rod and the sleeve, and the positioning pin is movably connected to one side surface of the sleeve.

[0013] Furthermore, the clamping assembly includes a movable groove, a bidirectional screw rod, and a turntable. The movable groove is opened on the inner wall surface of the mold frame, the bidirectional screw rod is movably installed on the inner wall of the movable groove, and the turntable is fixedly installed on one end of the bidirectional screw rod.

[0014] Furthermore, the clamping assembly also includes a slider and a clamping plate. The slider is movably connected to the outside of the bidirectional screw rod, and the clamping plate is fixedly installed on the top of the slider.

[0015] Furthermore, a bevel gear is also fixedly installed on the end of the rotating shaft 2 close to the rotating box, wherein the bevel gear at one end of the rotating shaft 2 is engaged with the bevel gear on the top of the shaft seat, wherein the rotating shaft 2 and the shaft seat are both connected by a positioning sleeve and fixedly connected to the inner wall of the rotating box, wherein the bottom end of the shaft seat is provided with a slot adapted to the connecting column, wherein the top end of the connecting column is plugged into the slot.

[0016] Furthermore, the size of the positioning transmission rod is smaller than that of the sleeve, and telescopic holes are provided at both ends of the positioning transmission rod, wherein the side walls of the telescopic holes are provided with limiting grooves, and the limiting grooves are respectively engaged with the protrusions at the inner ends of the rotating shaft one and the rotating shaft two.

[0017] Furthermore, the two sets of threads on the outside of the bidirectional screw are in opposite directions, and a through hole is opened on one side of the two sliders, and the inner wall of the through hole is opened with a thread groove adapted to the outer thread of the bidirectional screw, and the outer side of the slider is clamped with the inner wall of the movable groove.

[0018] (3) Beneficial effects

[0019] The present invention has the following beneficial effects:

[0020] 1. The rotating arm of the rotational molding machine is used to position the sleeve by pulling the sleeve outward along the outside of the positioning rod and rotating the positioning pin at one end of the sleeve close to the positioning rod to engage with the positioning hole on the top surface of the positioning rod. This allows the sleeve to be adjusted to different lengths to adapt to molds of different sizes, thereby increasing the applicability of the rotational molding machine.

[0021] 2. The rotating arm of the rotational molding machine drives the bidirectional screw to rotate by rotating the turntable. The bidirectional screw drives the slider to move along the outside of the bidirectional screw. It is mainly used to drive the movement of the splint to clamp the mold, and can clamp and fix molds of different widths.

[0022] 3. The rotating arm of the rotational molding machine is mainly used to drive the positioning transmission rod to rotate by setting the rotating shaft 1, and the positioning transmission rod drives the rotating shaft 2 to rotate. The rotating shaft 1 and the rotating shaft 2 can move telescopically along the inner wall of the positioning transmission rod, and then be used in conjunction with the positioning rod and the sleeve. The rotating shaft 2 drives two mutually meshing bevel gears to convert the horizontal rotation transmission into a vertical rotation transmission, so that the connecting column and the mold frame rotate to drive the mold to be evenly heated and baked.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of a rotating arm for production of a rotational molding machine according to the present invention;

[0025] Figure 2 This is a schematic diagram of the frame structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the sleeve structure of the present invention;

[0027] Figure 4 This is a schematic structural diagram of the mold frame of the present invention;

[0028] Figure 5 A half-section schematic diagram of the sleeve structure of the present invention;

[0029] Figure 6 Schematic diagram of the cross-section of the sleeve structure of the present invention;

[0030] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure of part A in the middle;

[0031] Figure 8 For the present invention Figure 6 Enlarged schematic diagram of the structure of part B in the middle.

[0032] In the figure, 1. frame; 2. bushing 1; 3. drive shaft; 4. bushing 2; 5. connecting ring; 6. motor; 7. rotating shaft 1; 8. rotating arm; 9. positioning rod; 10. sleeve; 11. movable groove; 12. telescopic rod; 13. mold frame; 14. rotating box; 15. positioning hole; 16. positioning pin; 17. connecting column; 18. turntable; 19. two-way screw; 20. slider; 21. splint; 22. rotating shaft 2; 23. bevel gear; 24. shaft seat; 25. positioning transmission rod. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] See also Figure 1-8 The embodiment of the present invention provides a technical solution: a rotating arm for a rotational molding machine, comprising a frame 1, a shaft sleeve 2 fixedly mounted on the top of the frame 1, a drive shaft 3 movably mounted inside the shaft sleeve 2, a drive assembly disposed on the outside of the drive shaft 3, a rotating arm 8 fixedly mounted on one end of the drive shaft 3, a positioning rod 9 symmetrically disposed on one end of the rotating arm 8, a sleeve 10 sleeved on the outside of the positioning rod 9, a telescopic rod 12 inserted into the inside of the sleeve 10;

[0036] A transmission component 1 is provided in the middle of the sleeve 10, a rotating box 14 is provided at one end of the telescopic rod 12, a transmission component 2 is provided in the middle of the rotating box 14, a positioning component is provided on the outside of the sleeve 10, a connecting column 17 is provided on the inside of the rotating box 14, a mold frame 13 is fixedly installed on one end of the connecting column 17, and a clamping component is provided on the inner wall of the mold frame 13.

[0037] Specifically, the drive assembly includes a second sleeve 4, a connecting ring 5, and a motor 6. The second sleeve 4 is movably mounted on the outside of the drive shaft 3, the connecting ring 5 is fixedly mounted on the outside of the second sleeve 4, and the motor 6 is fixedly mounted on the inside of the connecting ring 5.

[0038] In this embodiment, the shaft sleeve 2 4 is provided to mainly play a supporting role, wherein the connecting ring 5 is sleeved on the outside of the shaft sleeve 2 4, and mainly plays a traction role. When the drive shaft 3 rotates, it will drive the shaft sleeve 2 4 to rotate, and will also drive the rotating arm 8 to perform a circular motion. At this time, the motor 6 revolves along the outside of the shaft sleeve 2 4, wherein the motor 6 is mainly used to drive the rotating shaft 1 7 to perform self-rotation motion.

[0039] Specifically, the transmission component 1 includes a positioning transmission rod 25, a rotating shaft 1 7, and a rotating shaft 2 22. The positioning transmission rod 25 is movably mounted on the inner wall of the sleeve 10, the rotating shaft 1 7 is inserted into one end of the positioning transmission rod 25, and the rotating shaft 2 22 is inserted into the other end of the positioning transmission rod 25.

[0040] In this embodiment, the rotating shaft 1 7 is mainly used to drive the positioning transmission rod 25 to rotate, and the positioning transmission rod 25 drives the rotating shaft 2 22 to rotate, wherein the rotating shaft 1 7 and the rotating shaft 2 22 can perform telescopic movement along the inner wall of the positioning transmission rod 25.

[0041] Specifically, the second transmission assembly includes a bevel gear 23 and a shaft seat 24 . The shaft seat 24 is movably mounted on the inner wall of the rotating box 14 , and the bevel gear 23 is fixedly mounted on the top of the shaft seat 24 .

[0042] In this embodiment, the bevel gear 23 drives the shaft seat 24 to rotate, thereby driving the mold frame 13 to rotate. A limit block is provided on the outer side of the shaft seat 24 and is movably connected to the inner wall of the rotating box 14.

[0043] Specifically, the positioning assembly includes a positioning hole 15 and a positioning pin 16 . The positioning hole 15 is opened on the surface of the positioning rod 9 and the sleeve 10 . The positioning pin 16 is movably connected to one side surface of the sleeve 10 .

[0044] In this embodiment, the positioning hole 15 and the positioning pin 16 are provided mainly to adjust the length of the positioning hole 15, thereby achieving fixation of molds of different sizes, wherein the sleeve 10 is pulled to move on the outside of the positioning rod 9, and the positioning hole 15 is pulled to extend and retract on the inner wall of the sleeve 10, thereby achieving adjustment.

[0045] Specifically, the clamping assembly includes a movable groove 11, a bidirectional screw rod 19, and a turntable 18. The movable groove 11 is opened on the inner wall surface of the mold frame 13, the bidirectional screw rod 19 is movably installed on the inner wall of the movable groove 11, and the turntable 18 is fixedly installed at one end of the bidirectional screw rod 19.

[0046] In this embodiment, the movable groove 11 is mainly used to install the bidirectional screw rod 19, wherein rod holes adapted to the bidirectional screw rod 19 are opened at both ends of the mold frame 13, and the bidirectional screw rod 19 is driven to rotate by rotating the turntable 18, thereby achieving the purpose of adjustment.

[0047] Specifically, the clamping assembly further includes a slider 20 and a clamping plate 21 . The slider 20 is movably connected to the outside of the bidirectional screw rod 19 , and the clamping plate 21 is fixedly installed on the top of the slider 20 .

[0048] In this embodiment, the slider 20 is mainly used to drive the movement of the clamping plate 21, so that the clamping plate 21 outside the bidirectional screw 19 can clamp the mold. The slider 20 is mainly used to adjust the position of the clamping plate 21, so that molds of different widths can be clamped and fixed.

[0049] Specifically, a bevel gear 23 is also fixedly installed on the end of the rotating shaft 22 close to the rotating box 14, wherein the bevel gear 23 at one end of the rotating shaft 22 is engaged with the bevel gear 23 on the top of the shaft seat 24, wherein the rotating shaft 22 and the shaft seat 24 are both connected by a positioning sleeve and fixedly connected to the inner wall of the rotating box 14, wherein the bottom end of the shaft seat 24 is provided with a slot adapted to the connecting column 17, wherein the top end of the connecting column 17 is plugged into the slot.

[0050] In this embodiment, two mutually meshing bevel gears 23 are used to convert the horizontal rotation transmission into vertical rotation transmission, thereby enabling the connecting column 17 plugged into one end of the shaft seat 24 to rotate.

[0051] Specifically, the size of the positioning transmission rod 25 is smaller than that of the sleeve 10, and telescopic holes are provided at both ends of the positioning transmission rod 25, wherein the side walls of the telescopic holes are provided with limiting grooves, and the limiting grooves are respectively engaged with the protrusions at the inner ends of the rotating shaft 1 7 and the rotating shaft 2 22.

[0052] In this embodiment, when the length of the positioning hole 15 and the sleeve 10 is adjusted, the rotating shaft 1 7 and the rotating shaft 2 22 at both ends of the positioning transmission rod 25 will move along the telescopic hole respectively, thereby realizing transmission.

[0053] Specifically, the two sets of threads on the outside of the bidirectional screw 19 are in opposite directions, and a through hole is opened on one side of the two sliders 20, and the inner wall of the through hole is opened with a thread groove adapted to the outer thread of the bidirectional screw 19, and the outer side of the slider 20 is clamped with the inner wall of the movable groove 11.

[0054] In this embodiment, the bidirectional screw rod 19 is driven to rotate by rotating the turntable 18. At this time, the sliders 20 outside the bidirectional screw rod 19 make a linear motion approaching each other under the action of the outer threads of the bidirectional screw rod 19.

[0055] When the cam 12 is in the working state, the cam 12 is rotated to move the cam 10 outwards along the inner wall of the cam 10, and the cam 12 is moved outwards along the inner wall of the cam 10. At this time, the cam 12 is positioned in the working state by rotating the cam 10 so as to complete the adjustment of the cam 12 and the cam 10. The mold is then placed on the inner wall of the mold frame 13, and the two-way screw rod 19 is driven to rotate by rotating the turntable 18. At this time, the two-way screw rod 19 is driven The slider 20 on the outside of 19 moves toward the middle along the thread on the outside of the two-way screw rod 19, thereby driving the clamping plate 21 to clamp and fix the mold, and then the mold is reinforced by external auxiliary connecting parts. When the mold is fixed, the drive shaft 3 is driven by an external driving source to rotate. At this time, the drive shaft 3 drives the rotating arm 8 to make a circular motion and drives the mold frame 13 to rotate. Then, the motor 6 is energized to drive the rotating shaft 17 to rotate, and the rotating shaft 17 drives the positioning transmission rod 25 to rotate. The positioning transmission rod 25 drives the rotating shaft 22 to rotate. The rotating shaft 22 drives two mutually meshing bevel gears 23 to convert the horizontal rotation transmission into a vertical rotation transmission, thereby enabling the connecting column 17 plugged into one end of the shaft seat 24 to rotate, thereby driving the mold frame 13 to rotate, wherein the rotation of the mold frame 13 is perpendicular to the rotation of the turntable 18, thereby causing the mold to rotate continuously along the two vertical axes to make the mold heated more evenly.

[0056] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0057] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A rotating arm for a rotational molding machine, comprising a frame (1), characterized in that: A shaft sleeve (2) is fixedly mounted on the top of the frame (1), a driving shaft (3) is movably mounted inside the shaft sleeve (2), a driving assembly is arranged on the outside of the driving shaft (3), a rotating arm (8) is fixedly mounted on one end of the driving shaft (3), a positioning rod (9) is symmetrically arranged on one end of the rotating arm (8), a sleeve (10) is sleeved on the outside of the positioning rod (9), and a telescopic rod (12) is inserted into the inside of the sleeve (10); A transmission component 1 is provided in the middle of the sleeve (10), a rotating box (14) is provided at one end of the telescopic rod (12), a transmission component 2 is provided in the middle of the rotating box (14), a positioning component is provided on the outside of the sleeve (10), a connecting column (17) is provided on the inside of the rotating box (14), a mold frame (13) is fixedly mounted on one end of the connecting column (17), and a clamping component is provided on the inner wall of the mold frame (13); The driving assembly comprises a second shaft sleeve (4), a connecting ring (5), and a motor (6); the second shaft sleeve (4) is movably mounted on the outside of the driving shaft (3); the connecting ring (5) is fixedly mounted on the outside of the second shaft sleeve (4); and the motor (6) is fixedly mounted on the inside of the connecting ring (5); The transmission assembly 1 includes a positioning transmission rod (25), a rotating shaft 1 (7), and a rotating shaft 2 (22). The positioning transmission rod (25) is movably mounted on the inner wall of the sleeve (10). The rotating shaft 1 (7) is plugged into one end of the positioning transmission rod (25), and the rotating shaft 2 (22) is plugged into the other end of the positioning transmission rod (25). The positioning assembly comprises a positioning hole (15) and a positioning pin (16), wherein the positioning hole (15) is formed on the surface of the positioning rod (9) and the sleeve (10), and the positioning pin (16) is movably connected to a side surface of the sleeve (10); The clamping assembly comprises a movable groove (11), a bidirectional screw rod (19), and a turntable (18); the movable groove (11) is opened on the inner wall surface of the mold frame (13); the bidirectional screw rod (19) is movably mounted on the inner wall of the movable groove (11); and the turntable (18) is fixedly mounted on one end of the bidirectional screw rod (19).

2. A rotary arm for rotational molding machine production according to claim 1, characterized in that: The second transmission component comprises a bevel gear (23) and a shaft seat (24). The shaft seat (24) is movably mounted on the inner wall of the rotating box (14), and the bevel gear (23) is fixedly mounted on the top end of the shaft seat (24).

3. A rotary arm for rotational molding according to claim 2, characterized in that: The clamping assembly further comprises a slider (20) and a clamping plate (21), wherein the slider (20) is movably connected to the outside of the bidirectional screw rod (19), and the clamping plate (21) is fixedly mounted on the top of the slider (20).

4. A rotary arm for rotational molding machine production according to claim 3, characterized in that: The second rotating shaft (22) is also fixedly mounted with a bevel gear (23) at one end close to the rotating box (14), wherein the bevel gear (23) at one end of the second rotating shaft (22) is meshed with the bevel gear (23) at the top of the shaft seat (24), wherein the second rotating shaft (22) and the shaft seat (24) are both sleeved via a positioning sleeve and fixedly connected to the inner wall of the rotating box (14), wherein the bottom end of the shaft seat (24) is provided with a slot adapted to the connecting column (17), wherein the top end of the connecting column (17) is plugged into the slot.

5. The rotary arm for rotational molding machine according to claim 3, characterized in that: The size of the positioning transmission rod (25) is smaller than the size of the sleeve (10), wherein both ends of the positioning transmission rod (25) are provided with telescopic holes, wherein the side walls of the telescopic holes are provided with limiting grooves, and the limiting grooves are respectively engaged with the protrusions at the inner ends of the rotating shaft (7) and the rotating shaft (22).

6. A rotary arm for rotational molding machine production according to claim 5, characterized in that: The two sets of threads on the outside of the bidirectional screw (19) are in opposite directions, and a through hole is opened on one side of the two sliders (20), and a thread groove adapted to the outer thread of the bidirectional screw (19) is opened on the inner wall of the through hole, and the outer side of the slider (20) is clamped with the inner wall of the movable groove (11).

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