U-shaped arm of rotational molding machine

Abstract

The utility model discloses a U-shaped arm of a rotational molding machine, which comprises a main beam, secondary beams are arranged on the outer sides of the two ends of the main beam through screws, the two secondary beams have the same structure, the two secondary beams and the main beam form a U shape, and the U-shaped arm further comprises a secondary shaft disc tooth II and a secondary shaft disc tooth I which are respectively arranged at the outer ends of the two secondary beams through screws, the second auxiliary shaft disc tooth and the first auxiliary shaft disc tooth are symmetrically arranged about the vertical center line of the main beam, and the inner end of the second auxiliary shaft disc tooth and the inner end of the first auxiliary shaft disc tooth are connected with an inner frame. According to the U-shaped arm of the rotational molding machine, the auxiliary shaft gear drive is installed at the outer end of the main beam in the penetrating mode, then the U-shaped arm gear drive is installed at the outer end of the main beam in the penetrating mode, and the first transmission shaft and the second transmission shaft can be driven to rotate through chain transmission while the auxiliary shaft gear drive and the U-shaped arm gear drive rotate at the same time; at the moment, the force of the main beam can be dispersed to the two auxiliary beams, so that the torque of the main beam can be increased, and the optimal working effect can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of roto-molding machines, in particular to a U-shaped arm of a roto-molding machine. Background Art

[0002] Roto-molding machine is a kind of plastic processing equipment, which is mainly used to produce various plastic products, such as buckets, basins, cans, boxes, etc. Its working principle is to put the plastic raw materials into the mold of the machine, and then through rotation and heating, etc., the plastic raw materials are gradually melted and evenly coated on the mold surface, and finally the required plastic products are formed. When the roto-molding machine is used for production and processing, a U-shaped arm is needed to assist the roto-molding machine in production and processing;

[0003] In the "A Rotational Molding Machine Rotating Arm" with the patent publication CN213353237U, a rotating rod is included, the end of the rotating rod is fixedly connected to a fixed frame, the two ends of the fixed frame are vertically fixedly connected to transmission rods, the fixed frame and the transmission rod form a "U"-shaped structure, one end of the transmission rod is fixedly connected to the fixed frame, and the other end is hinged to a mold bracket, and the two ends of the transmission rod are respectively provided with a first reinforcement end and a second reinforcement end; the utility model can keep the rotating arm firm and not damaged during long-term use;

[0004] When the existing U-shaped arm of the rotational molding machine is in use, it basically directly drives the two secondary shafts to rotate through the main shaft. However, the force in this rotation mode is directly attached to the main shaft, which will cause the torque of the main shaft to become smaller and fail to achieve the best working effect, which will affect the stable processing and use of the subsequent rotational molding machine.

[0005] Therefore, we proposed that the U-shaped arm of the rotational molding machine can solve the above problems well. Utility Model Content

[0006] The purpose of the utility model is to provide a U-shaped arm for a rotomolding machine to solve the problem raised by the above-mentioned background technology that the U-shaped arms of the rotomolding machines currently on the market basically directly drive the two secondary shafts to rotate through the main shaft when in use, but the forces in this rotation mode are directly attached to the main shaft, which will cause the torque of the main shaft to become smaller, and cannot achieve the best working effect, which will affect the stable processing and use of the rotomolding machine in the later stage.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a U-shaped arm of a rotational molding machine, comprising a main beam, and sub-beams are installed on the outer sides of both ends of the main beam by screws, and the two sub-beams have the same structure, and the two sub-beams and the main beam form a "U" shape, and the front and rear upper and lower ends of the main beam are symmetrically screwed with chain tensioning devices;

[0008] It also includes: the outer ends of the two sub-beams are respectively installed with secondary shaft disc gear 2 and secondary shaft disc gear 1 by screws, and the secondary shaft disc gear 2 and the secondary shaft disc gear 1 are symmetrically arranged with respect to the vertical center line of the main beam, and the inner ends of the secondary shaft disc gear 2 and the secondary shaft disc gear 1 are connected with an inner frame, and the inner frame is arranged on the inner side of the two sub-beams, and the outer end of the main beam is provided with a transmission assembly, which can be used to drive the transmission shaft 1 and the transmission shaft 2 to rotate at the same time, so that the force of the main beam can be dispersed to the two sub-beams, thereby increasing the torque of the main beam.

[0009] Preferably, the transmission assembly includes a U-arm gear drive, wherein the U-arm gear drive is installed at the left end of the main beam, and the outer end of the U-arm gear drive corresponds to the secondary shaft gear drive, and the secondary shaft gear drive is installed at the left end of the main beam. The transmission assembly also includes a chain drive, wherein the interiors of the two secondary beams are respectively grooved and rotatably installed with a transmission shaft one and a transmission shaft two, and the structures of the transmission shaft one and the transmission shaft two are the same, and the left ends of the transmission shaft one and the transmission shaft two are connected to the output end of the U-arm gear drive through a chain drive, which can disperse the force of the main beam to the two secondary beams, thereby increasing the torque of the main beam.

[0010] Preferably, the right ends of the transmission shaft one and the transmission shaft two are respectively connected to the secondary shaft disc gear two and the secondary shaft disc gear one, and the inner frame can be connected through the secondary shaft disc gear two and the secondary shaft disc gear one when the transmission shaft one and the transmission shaft two rotate at the same time, which can drive the inner frame to flip and swing on the inner side of the two secondary beams.

[0011] Preferably, a central air inlet pipe is installed through the inner groove on the left side of the main beam, and the right end of the central air inlet pipe is connected to a central air outlet pipe, and the central air outlet pipe is installed inside the inner frame, and a row of air heads are evenly spaced above the central air outlet pipe. The mold inside the inner frame can be quickly cooled and molded through a row of central air outlet pipes, thereby improving the processing efficiency of the rotational molding machine.

[0012] Preferably, a reinforcing plate is installed on the left end of the main beam by screws, and the outer end of the reinforcing plate is connected to a U-arm gear drive by screws, reinforcing ribs are installed on both ends of the inner side of the main beam by screws, and the two reinforcing ribs are triangular in shape, and the outer sides of the two reinforcing ribs are connected to sub-beams by screws. The reinforcing plate and the two reinforcing ribs can improve the stability between the two sub-beams and the main beam, thereby avoiding deformation and damage between the main beam and the two sub-beams due to unstable force.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] (1) By installing a countershaft gear drive through the outer end of the main beam, and then installing a U-arm gear drive through the outer end of the main beam, the countershaft gear drive and the U-arm gear drive can be used to rotate simultaneously, and at the same time, the transmission shaft 1 and the transmission shaft 2 can be driven to rotate through the chain drive. At this time, the force of the main beam can be dispersed to the two sub-beams, thereby increasing the torque of the main beam and achieving the best working effect;

[0015] (2) Furthermore, by connecting the outer ends of the transmission shaft 1 and the transmission shaft 2 with the secondary shaft disc gear 2 and the secondary shaft disc gear 1 respectively, and then connecting the inner ends of the secondary shaft disc gear 2 and the secondary shaft disc gear 1 to the outer wall of the inner frame, the secondary shaft disc gear 2 and the secondary shaft disc gear 1 can be rotated while the inner frame is driven to flip and swing, thereby improving the processing efficiency of the rotational molding machine;

[0016] (3) A central air inlet pipe is installed through the outer end of the main beam, and then the central air inlet pipe is connected to the central air outlet pipe slotted inside the inner frame. The central air outlet pipe then transports the transported gas to a circle of air outlet heads for exhaust. Then, the mold formed inside the inner frame can be quickly cooled and dissipated, thereby improving the processing of the rotational molding machine.

[0017] (4) By connecting the U-arm gear drive to the outer end of the main beam through a reinforcing plate, the overall force effect of the main beam can be increased through the reinforcing plate, and then the sub-beams are connected to the inner ends of the main beam through reinforcing rib screws. This can improve the stability between the two sub-beams and the main beam and avoid deformation and damage between the main beam and the two sub-beams due to unstable force. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the partial three-dimensional structure of the main beam and the auxiliary beam of the utility model;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the main beam and the auxiliary beam of the utility model from a side view;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the main beam and the auxiliary beam of the utility model from a top view;

[0022] Figure 5 It is a schematic diagram of the structure of the utility model.

[0023] In the figure: 1. main beam; 2. sub-beam; 3. inner frame; 4. countershaft gear drive; 5. U-arm gear drive; 6. center air inlet pipe; 7. chain drive; 8. transmission shaft one; 9. transmission shaft two; 10. countershaft disc gear two; 11. center air outlet pipe; 12. air outlet head; 13. reinforcing ribs; 14. reinforcing plate; 15. countershaft disc gear one; 16. chain tensioning device. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] This utility provides the following technical solutions:

[0026] Embodiment 1, in order to solve the problem of uneven force between the U-shaped arm main beam 1 and the two auxiliary beams 2 of the existing rotational molding machine, discloses:

[0027] The main beam 1 has sub-beams 2 installed on the outer sides of both ends by screws, and the two sub-beams 2 have the same structure, and the two sub-beams 2 form a "U" shape with the main beam 1, and the front and rear ends of the main beam 1 are symmetrically screwed with chain tensioning devices 16;

[0028] It also includes: the outer ends of the two sub-beams 2 are respectively installed with a secondary shaft disc gear 2 10 and a secondary shaft disc gear 1 15 by screws, and the secondary shaft disc gear 2 10 and the secondary shaft disc gear 1 15 are symmetrically arranged about the vertical center line of the main beam 1, and the inner ends of the secondary shaft disc gear 2 10 and the secondary shaft disc gear 1 15 are connected with an inner frame 3, and the inner frame 3 is arranged on the inner side of the two sub-beams 2, and the outer end of the main beam 1 is provided with a transmission assembly, which can drive the transmission shaft 1 8 and the transmission shaft 2 9 to rotate at the same time, so that the force of the main beam 1 can be dispersed to the two sub-beams 2, thereby increasing the torque of the main beam 1.

[0029] The transmission assembly includes a U-arm gear drive 5, wherein the U-arm gear drive 5 is installed at the left end of the main beam 1, and the outer end of the U-arm gear drive 5 corresponds to the countershaft gear drive 4, and the countershaft gear drive 4 is installed at the left end of the main beam 1. The transmission assembly also includes a chain drive 7, wherein the interiors of the two sub-beams 2 are respectively grooved and rotatably installed with a transmission shaft 1 8 and a transmission shaft 2 9, and the transmission shaft 1 8 and the transmission shaft 2 9 have the same structure, and the left ends of the transmission shaft 1 8 and the transmission shaft 2 9 are connected to the output end of the U-arm gear drive 5 through the chain drive 7, and the right ends of the transmission shaft 1 8 and the transmission shaft 2 9 are respectively connected to the countershaft disc gear 2 10 and the countershaft disc gear 1 15, and the inner frame 3 can be connected through the countershaft disc gear 2 10 and the countershaft disc gear 1 15 while the transmission shaft 1 8 and the transmission shaft 2 9 rotate at the same time, and the inner frame 3 can be driven to flip and swing on the inner side of the two sub-beams 2.

[0030] like Figure 1-Figure 4 As shown, during the production and processing of the rotational molding machine, the secondary shaft gear drive 4 and the U-arm gear drive 5 can simultaneously drive the transmission shaft 1 8 and the transmission shaft 2 9 to rotate through the chain transmission 7. At this time, the force of the main beam 1 can be dispersed to the two secondary beams 2, so that the torque of the main beam 1 can be increased, so as to achieve the best working effect and avoid the main beam 1 being subjected to excessive force and affecting the stable use of the rotational molding machine in the later stage. Then, while the transmission shaft 1 8 and the transmission shaft 2 9 are rotating, the secondary shaft disc gear 2 10 and the secondary shaft disc gear 1 15 can be driven to drive the inner frame 3 connected to the inner side to rotate, and then the processing efficiency of the rotational molding machine can be improved.

[0031] Embodiment 2 is different from Embodiment 1 in that when the rotational molding machine is used, a row of molds formed inside the inner frame 3 can be used for rapid cooling and heat dissipation, and the following is disclosed:

[0032] A central air inlet pipe 6 is installed through the inner groove on the left side of the main beam 1, and the right end of the central air inlet pipe 6 is connected to a central air outlet pipe 11, and the central air outlet pipe 11 is installed inside the inner frame 3, and a row of air outlet heads 12 are evenly spaced above the central air outlet pipe 11.

[0033] like Figure 1 and Figure 2 As shown, after the mold is formed inside the inner frame 3, the external air pump is started to transport the gas through the central air inlet pipe 6 to the central air outlet pipe 11, and then the gas inside the central air outlet pipe 11 is dispersed and blown to the outside of the inner frame 3 through an exhaust head 12. At this time, the mold inside the inner frame 3 can be quickly cooled and formed by the blown air, thereby improving the processing efficiency of the rotational molding machine.

[0034] Embodiment 3 is different from Embodiment 2 in that the stability between the main beam 1 and the two auxiliary beams 2 can be improved when the rotational molding machine is used, and the following is disclosed:

[0035] A reinforcing plate 14 is installed at the left end of the main beam 1 by screws, and the outer end of the reinforcing plate 14 is connected to the U-arm gear drive 5 by screws, and reinforcing ribs 13 are installed at both ends of the inner side of the main beam 1 by screws, and the two reinforcing ribs 13 are both triangular in shape, and the outer sides of the two reinforcing ribs 13 are connected to the sub-beam 2 by screws.

[0036] like Figure 1-Figure 5 As shown, when the rotational molding machine is used for production and processing, the main beam 1 is connected to the U-arm gear drive 5 through the reinforcing plate 14, and the reinforcing plate 14 can be used to increase the overall force effect of the main beam 1. Then, the main beam 1 is connected to the two sub-beams 2 through the reinforcing ribs 13, which can improve the stability between the two sub-beams 2 and the main beam 1, and avoid deformation and damage between the main beam 1 and the two sub-beams 2 due to unstable force.

[0037] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the present invention is described in detail with reference to the aforementioned embodiments, it is still possible for technical personnel in the field to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A U-shaped arm of a rotational molding machine, comprising a main beam (1), with sub-beams (2) mounted on the outer sides of both ends thereof by screws, and the two sub-beams (2) have the same structure, and the two sub-beams (2) and the main beam (1) form a "U" shape, and the front and rear ends of the main beam (1) are symmetrically screwed with chain tensioning devices (16); It is characterized in that Also includes: The outer ends of the two auxiliary beams (2) are respectively mounted with auxiliary shaft disc gear 2 (10) and auxiliary shaft disc gear 1 (15) by screws, and the auxiliary shaft disc gear 2 (10) and the auxiliary shaft disc gear 1 (15) are symmetrically arranged with respect to the vertical center line of the main beam (1), and the inner ends of the auxiliary shaft disc gear 2 (10) and the auxiliary shaft disc gear 1 (15) are connected with an inner frame (3), and the inner frame (3) is arranged on the inner side of the two auxiliary beams (2); The outer end of the main beam (1) is provided with a transmission assembly, which can be used to simultaneously drive the first transmission shaft (8) and the second transmission shaft (9) to rotate. At this time, the force of the main beam (1) can be dispersed to the two sub-beams (2), thereby increasing the torque of the main beam (1).

2. The U-shaped arm of the rotational molding machine according to claim 1, characterized in that: The transmission assembly comprises a U-arm gear drive (5), wherein the U-arm gear drive (5) is mounted on the left end of the main beam (1), and the outer end of the U-arm gear drive (5) corresponds to a countershaft gear drive (4), and the countershaft gear drive (4) is mounted on the left end of the main beam (1).

3. The U-shaped arm of the rotational molding machine according to claim 2, characterized in that: The transmission assembly also includes a chain drive (7), wherein the two sub-beams (2) are respectively grooved inside and rotatably mounted with a transmission shaft 1 (8) and a transmission shaft 2 (9), and the transmission shaft 1 (8) and the transmission shaft 2 (9) have the same structure, and the left ends of the transmission shaft 1 (8) and the transmission shaft 2 (9) are connected to the output end of the U-arm gear drive (5) through the chain drive (7).

4. The U-shaped arm of the rotational molding machine according to claim 3, characterized in that: The right ends of the transmission shaft 1 (8) and the transmission shaft 2 (9) are respectively connected to the secondary shaft disc gear 2 (10) and the secondary shaft disc gear 1 (15). When the transmission shaft 1 (8) and the transmission shaft 2 (9) rotate simultaneously, the secondary shaft disc gear 2 (10) and the secondary shaft disc gear 1 (15) are connected to the inner frame (3), so that the inner frame (3) can be driven to flip and swing on the inner sides of the two secondary beams (2).

5. The U-shaped arm of the rotational molding machine according to claim 1, characterized in that: A central air inlet pipe (6) is installed through the inner groove on the left side of the main beam (1), and the right end of the central air inlet pipe (6) is connected to a central air outlet pipe (11), and the central air outlet pipe (11) is installed inside the inner frame (3), and an air outlet head (12) is installed above the central air outlet pipe (11) at an even interval.

6. The U-shaped arm of the rotational molding machine according to claim 1, characterized in that: A reinforcing plate (14) is mounted on the left end of the main beam (1) via screws, and an outer end of the reinforcing plate (14) is connected to a U-arm gear drive (5) via screws.

7. The U-shaped arm of the rotational molding machine according to claim 1, characterized in that: Both ends of the inner side of the main beam (1) are mounted with reinforcing ribs (13) by means of screws, and the two reinforcing ribs (13) are both triangular in shape, and the outer sides of the two reinforcing ribs (13) are connected to the secondary beam (2) by means of screws.

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