Tire screw tightening machine convenient to adjust

Abstract

The utility model relates to the technical field of tire screw installation, in particular to a tire screw tightening machine convenient to adjust, which comprises a base, a driving motor is fixedly installed in the base, a load-bearing rotating shaft is fixedly installed at the output end of the driving motor, and a load-bearing truss is integrally connected to the load-bearing rotating shaft. And a limiting mechanism which is in transmission connection with the bearing rotating shaft to limit and fix the tire is arranged on the base. According to the utility model, the bearing rotating shaft driven by the driving motor to rotate is arranged in the base with the hollow structure, and the bearing truss is used for guiding and limiting the hoisting bracket on the opening and closing bracket, so that the screwing end on the hoisting bracket can horizontally deflect and adjust the height position; and a ball screw in transmission connection with the bearing rotating shaft is arranged in the base, limiting bolts which are distributed at equal intervals in the circumferential direction are pulled through nuts on the ball screw, and therefore the tires located in the conveying grooves are limited in an abutting mode.

Description

Technical Field

[0001] The utility model relates to the technical field of tire screw installation, in particular to a tire screw tightening machine which is easy to adjust. Background Art

[0002] In recent years, the automobile industry has developed rapidly. There are many types of automobiles on the market with different specifications. Take tires as an example. There are many sizes and models. At present, tire screw tightening machines have been widely used by large domestic and foreign automobile manufacturers. The previous manual tire screw tightening machines have been replaced by tire screw tightening machines, which use electric tightening equipment for tightening. It has the advantages of high precision, fast speed, high efficiency and low noise. At this stage, in order to save costs and improve production efficiency, the main factories will assemble tires of different models on the same line. However, the number of screws of the tires is not consistent, and the number of shafts of the existing tire tightening machines is generally fixed, which means that the tire screw tightening machine cannot be applied to two models with different numbers of screws at the same time. Frequent specification adjustments are very likely to cause quality problems such as missed tightening.

[0003] At present, a tire screw tightening machine and its use method that are easy to adjust are disclosed by the publication number CN115026560A. The tire screw tightening machine is mainly composed of a frame part, a lifting device, a tightening device and a vehicle type switching device. The frame part is used to fix various components, and the lifting device mainly includes a single-rod locking cylinder, a pressure reducing valve and an electric handle. The tire screw tightening machine suitable for the production of multiple vehicle types mainly utilizes the telescopic movement of the single-rod locking cylinder to realize the movement of the tightening machine, and the angle adjustment of the reaction rod is realized by the separation and attraction of the turntable and the electromagnetic brake, and the screw tightening of tires of different vehicle types is realized by the vehicle type switching device. However, in order to realize the adjustment of multiple angles, a large number of driving devices and connecting joints are set, which makes the overall structure of the screw tightening machine complicated, greatly increases the difficulty and preparation cost of manufacturing and controlling the screw tightening machine, and at the same time makes it necessary to perform multi-level angle, height and position adjustment according to the tire needs. Although automatic control is realized, there are still deficiencies in efficiency and accuracy. Utility Model Content

[0004] The utility model aims to solve the problem of inconvenient installation of tire screws of various vehicle models in the prior art, and proposes a tire screw tightening machine which is easy to adjust.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A tire screw tightening machine that is easy to adjust, comprising a base, a driving motor is fixedly installed in the base, and a load-bearing shaft is fixedly installed at the output end of the driving motor, a load-bearing truss is integrally connected to the load-bearing shaft, a driving mechanism for installing a screwing end is jointly provided on the load-bearing shaft and the load-bearing truss, and a limiting mechanism is provided on the base that is transmission-connected with the load-bearing shaft to limit and fix the tire;

[0007] The driving mechanism includes a first guide groove provided in the load-bearing shaft, and a hydraulic cylinder and a guide block directly driven by the hydraulic cylinder are arranged in the first guide groove, a pin shaft on the load-bearing shaft is installed with an opening and closing bracket, and a first connecting rod is connected between the guide block and the opening and closing bracket, a hanging bracket is installed with a pin shaft on the opening and closing bracket, and a strong spring is welded in the hanging bracket, and a telescopic rod is welded on the strong spring, a second guide groove for slidingly sleeved the telescopic rod is provided in the load-bearing truss, and a cylinder fixedly connected to the screwing end is fixedly installed on the hanging bracket;

[0008] The limiting mechanism includes a feeding groove opened on the base, a pin in the feeding groove is installed with a limiting bolt for limiting and supporting the inner circle of the tire, a ball screw driven by a load-bearing shaft is rotatably installed in the base, and a nut is matched with the ball screw, and a second connecting rod is connected between the nut and the limiting bolt.

[0009] Preferably, the load-bearing shaft is longitudinally rotatably mounted on the base via a bearing, and the load-bearing truss is horizontally connected to the top end of the load-bearing shaft extending out of the base.

[0010] Preferably, the hydraulic cylinder is fixedly installed, and the guide block is slidably mounted in the first guide groove, and the two ends of the first connecting rod are respectively connected to the guide block and the opening and closing bracket pin.

[0011] Preferably, a transmission belt is connected between the load-bearing rotating shaft and the ball screw, and two ends of the second connecting rod are respectively connected to the nut and the limit bolt pin.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. The utility model provides a load-bearing rotating shaft driven to rotate by a driving motor in a hollow structure base, and integrally connects a load-bearing truss to the load-bearing rotating shaft. By providing a first connecting rod and an opening and closing bracket connected to each other on the load-bearing rotating shaft, and using the load-bearing truss to guide and limit the hanging bracket on the opening and closing bracket, the screwing end on the hanging bracket can be horizontally deflected and the height position adjusted.

[0014] 2. The utility model sets a ball screw in the base which is transmission-connected with the load-bearing shaft, and uses the nut on the ball screw to pull the limit bolts which are equally spaced in the circumferential direction, so as to limit the tire located in the feeding groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a tire screw tightening machine that is easy to adjust proposed by the utility model;

[0016] Figure 2 This is an enlarged schematic diagram of the structure of part A of a tire screw tightening machine that is easy to adjust proposed by the utility model;

[0017] Figure 3 A cross-sectional view of a tire screw tightening machine that is easy to adjust proposed by the utility model;

[0018] Figure 4 This is an enlarged schematic diagram of the B part structure of a tire screw tightening machine that is easy to adjust proposed by the utility model.

[0019] In the figure: 1. base; 2. driving motor; 3. load-bearing shaft; 4. load-bearing truss; 5. first guide groove; 6. hydraulic cylinder; 7. guide block; 8. opening and closing bracket; 9. first connecting rod; 10. lifting bracket; 11. strong spring; 12. telescopic rod; 13. second guide groove; 14. cylinder; 15. screw end; 16. ball screw; 17. transmission belt; 18. nut; 19. limit bolt; 20. second connecting rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-Figure 4 A tire screw tightening machine that is easy to adjust includes a base 1, a driving motor 2 is fixedly installed in the base 1, the driving motor 2 adopts a servo motor of model HC-MFS13B, and a load-bearing shaft 3 is fixedly installed at the output end of the driving motor 2. Under the driving action of the driving motor 2, the load-bearing shaft 3 can drive the screwing end 15 to deflect horizontally to an angular position corresponding to the tire, and the load-bearing shaft 3 is integrally connected with a load-bearing truss 4. The load-bearing shaft 3 and the load-bearing truss 4 are jointly provided with a driving mechanism for installing the screwing end 15. It should be noted that the screwing end 15 adopts automated equipment, which can drive the screws on the tire, and the base 1 is provided with a limiting mechanism that is transmission-connected to the load-bearing shaft 3 to limit and fix the tire.

[0022] Further explanation:

[0023] First, the driving mechanism includes a first guide groove 5 opened in the load-bearing rotating shaft 3, and a hydraulic cylinder 6 and a guide block 7 directly driven by the hydraulic cylinder 6 are arranged in the first guide groove 5. The hydraulic cylinder 6 adopts a hydraulic driving device with a model of YGS70*30*520. A tensioning bracket 8 is installed on the pin shaft of the load-bearing rotating shaft 3, and a first connecting rod 9 is connected between the guide block 7 and the tensioning bracket 8. A lifting bracket 10 is installed on the pin shaft of the tensioning bracket 8. Under the driving action of the hydraulic cylinder 6, the tensioning bracket 8 can be tensioned and deflected with the load-bearing rotating shaft 3 as the base point to adjust the rotation. The horizontal position of the screw terminal 15 is adjusted, and a strong spring 11 is welded in the hanging bracket 10, and a telescopic rod 12 is welded on the strong spring 11. A second guide groove 13 for slidingly sleeve the telescopic rod 12 is opened in the load-bearing truss 4. Under the horizontal limit of the second guide groove 13, the hanging bracket 10 can always move horizontally in a vertical state. A cylinder 14 fixedly connected to the screw terminal 15 is fixedly installed on the hanging bracket 10. The cylinder 14 adopts a RM-WPLA wide platform servo push rod to adjust the height position of the screw terminal 15;

[0024] Second, the limiting mechanism includes a feeding groove opened on the base 1, and a pin in the feeding groove is installed with a limiting bolt 19 for limiting the inner circle of the tire. Figure 1 The number of limit bolts 19 is a multiple of three, and they are equidistantly distributed in the circumferential direction, so as to provide limit support for the inner circle of the tire in the open state to ensure that the position of the tire is fixed. A ball screw 16 driven by the load-bearing shaft 3 is rotatably installed in the base 1, and a nut 18 is installed on the ball screw 16. A second connecting rod 20 is connected between the nut 18 and the limit bolt 19.

[0025] Based on the above method:

[0026] First, the load-bearing shaft 3 is longitudinally rotatably installed on the base 1 through a bearing, and the load-bearing truss 4 is horizontally connected to the top end of the load-bearing shaft 3 extending out of the base 1. The driving motor 2 is used to make the load-bearing shaft 3 and the load-bearing truss 4 perform a 360° horizontal rotation movement, so as to facilitate the angle adjustment on the base 1 according to the tire position.

[0027] Secondly, the hydraulic cylinder 6 is fixedly installed, and the guide block 7 is slidably mounted in the first guide groove 5. The two ends of the first connecting rod 9 are respectively connected to the guide block 7 and the opening and closing bracket 8 with pins. Under the traction of the first connecting rod 9, the horizontal position of the screwing end 15 can be adjusted according to the size of the tire.

[0028] Finally, a transmission belt 17 is connected between the load-bearing shaft 3 and the ball screw 16 , and both ends of the second connecting rod 20 are respectively connected to the nut 18 and the limit bolt 19 pin shaft to control the opening and closing of the limit bolt 19 .

[0029] The functional principle of the utility model can be explained through the following operation modes:

[0030] The tire is transported to a suitable position through the feeding groove, and the driving motor 2 is controlled to start;

[0031] The output end of the driving motor 2 drives the load-bearing shaft 3 to rotate, and the load-bearing shaft 3 drives the load-bearing truss 4 to rotate synchronously, so that the screwing end 15 on the lifting bracket 10 deflects to an angle position corresponding to the tire;

[0032] At the same time, the load-bearing shaft 3 drives the ball screw 16 to rotate through the transmission belt 17, so that the nut 18 moves upward, and the nut 18 supports the limit bolt 19 to open through the second connecting rod 20, so as to limit the tire in the feeding groove;

[0033] The hydraulic cylinder 6 is controlled to be opened on the load-bearing rotating shaft 3, so that the guide block 7 moves up and down in the first guide groove 5, and the opening and closing bracket 8 is pulled by the first connecting rod 9, so that the opening and closing bracket 8 drives the lifting bracket 10 to move horizontally, and the load-bearing truss 4 has a limiting effect on the lifting bracket 10, so that the telescopic rod 12 moves telescopically in the lifting bracket 10 due to the strong spring 11, and moves horizontally along the second guide groove 13, ensuring the vertical state of the lifting bracket 10, until the lifting bracket 10 drives the screwing end 15 to move to the position above the tire;

[0034] The control cylinder 14 is opened, so that the cylinder 14 drives the screwing end 15 to move up and down, and the screwing end 15 is used to screw and fix the threaded nails on the tire.

[0035] 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 within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tire screw tightening machine that is easy to adjust, comprising a base (1), characterized in that: A driving motor (2) is fixedly installed in the base (1), and a load-bearing rotating shaft (3) is fixedly installed at the output end of the driving motor (2); a load-bearing truss (4) is integrally connected to the load-bearing rotating shaft (3); a driving mechanism for installing a screwing end (15) is provided on the load-bearing rotating shaft (3) and the load-bearing truss (4); and a limiting mechanism is provided on the base (1) and is transmission-connected to the load-bearing rotating shaft (3) to limit and fix the tire; The driving mechanism comprises a first guide groove (5) provided in the load-bearing rotating shaft (3), and a hydraulic cylinder (6) and a guide block (7) directly driven by the hydraulic cylinder (6) are provided in the first guide groove (5), a pin shaft on the load-bearing rotating shaft (3) is installed with an opening and closing bracket (8), and a first connecting rod (9) is connected between the guide block (7) and the opening and closing bracket (8), a hanging bracket (10) is installed with a pin shaft on the opening and closing bracket (8), and a strong spring (11) is welded inside the hanging bracket (10), and a telescopic rod (12) is welded to the strong spring (11), a second guide groove (13) on which the telescopic rod (12) is slidably mounted is provided in the load-bearing truss (4), and a cylinder (14) fixedly connected to a screwing end (15) is fixedly installed on the hanging bracket (10); The limiting mechanism comprises a feeding groove formed on a base (1), a limiting bolt (19) for limiting and supporting the inner circumference of a tire is installed on a pin shaft in the feeding groove, a ball screw (16) driven by a load-bearing shaft (3) is rotatably installed in the base (1), a nut (18) is matched with the ball screw (16), and a second connecting rod (20) is connected between the nut (18) and the limiting bolt (19).

2. The tire screw tightening machine that is easy to adjust according to claim 1, characterized in that: The load-bearing rotating shaft (3) is longitudinally rotatably mounted on the base (1) via a bearing, and the load-bearing truss (4) is horizontally connected to the top end of the load-bearing rotating shaft (3) extending outside the base (1).

3. The tire screw tightening machine that is easy to adjust according to claim 2, characterized in that: The hydraulic cylinder (6) is fixedly installed, and the guide block (7) is slidably mounted in the first guide groove (5), and the two ends of the first connecting rod (9) are respectively connected to the guide block (7) and the opening and closing bracket (8) by pins.

4. The tire screw tightening machine that is easy to adjust according to claim 3, characterized in that: A transmission belt (17) is connected between the load-bearing rotating shaft (3) and the ball screw (16), and two ends of the second connecting rod (20) are respectively connected to the nut (18) and the limit bolt (19) pin.

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