A unidirectional pendulum device for counting bars

Abstract

This utility model relates to a unidirectional pendulum device for counting bars, including a base and a pendulum rod rotatably connected to the base via a rotating shaft. The rotating shaft is located between the upper and lower ends of the pendulum rod, and the axis of the rotating shaft extends laterally. A baffle is fixed to the front side of the lower end of the pendulum rod. When the lower end of the pendulum rod contacts the baffle, the upper end of the pendulum rod is located in front of the bar to be counted. This utility model has a simple structure and is easy to install. By setting the baffle, the upper end of the pendulum rod can only rotate forward from a vertical position, forming a unidirectional pendulum rod, which blocks the retracting bar. From a mechanical structure perspective, it effectively prevents repeated counting caused by the bar bouncing back, thus improving the accuracy of counting.

Description

Technical Field

[0001] This utility model relates to the technical field of bar production equipment, and in particular to bar counting, specifically a unidirectional swing arm device for bar counting. Background Technology

[0002] In the bar production process, after the bars are rolled, they need to be collected and counted by a counting and sorting device in order to achieve quantitative packaging and production statistics.

[0003] However, in the existing counting process, the bar is counted once when it passes through the counting device. When the bar passes through the steel separating device, it is subjected to the pushing force of the separating mechanism. This causes some bars to rebound due to uneven force or material properties. This rebound causes the counting device to count again, resulting in duplicate counting, which seriously affects the accuracy of the counting, and consequently impacts subsequent packaging efficiency and the reliability of production data. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing a unidirectional swing arm device for counting bars, which avoids the bars from retracting and ensures the accuracy of counting.

[0005] This utility model is achieved through the following technical solution: a unidirectional pendulum device for counting bars is provided, including a base and a pendulum rod rotatably connected to the base via a rotating shaft. The rotating shaft is located between the upper end and the lower end of the pendulum rod, and the axis of the rotating shaft extends laterally. A baffle is fixedly provided on the front side of the lower end of the pendulum rod. When the lower end of the pendulum rod contacts the baffle, the upper end of the pendulum rod is located in front of the bar to be counted.

[0006] This design uses a swing arm to form a lever structure. When the bar moves forward, it pushes the upper end of the swing arm to rotate forward and the lower end to rotate backward. After the bar passes the swing arm, the swing arm returns to its original position under its own weight. A baffle blocks the lower end of the swing arm, preventing it from rotating further after returning to its initial position. If a bar rebounds and moves backward, the upper end of the swing arm blocks its passage, preventing the rebounding bar from being counted by the counting device again.

[0007] As an optimization, a counterweight is fixed to the lower end of the pendulum rod, and the baffle is located on the movement trajectory of the counterweight. This optimization scheme improves the reliability of pendulum rod reset and shortens the reset time by setting a counterweight.

[0008] As an optimization, the counterweight includes a counterweight shaft, an inner sleeve, a middle sleeve, and an outer sleeve arranged sequentially from the inside out. The counterweight shaft is threadedly connected to the inner sleeve, the inner sleeve is threadedly connected to the middle sleeve, and the middle sleeve is threadedly connected to the outer sleeve. This optimized solution sets the counterweight into four detachable parts, allowing the weight of the counterweight to be adjusted according to the mass of the bar, ensuring that the bar can be smoothly pushed and passed through the upper end of the swing arm.

[0009] As an optimization, the end faces of the counterweight shaft, inner sleeve, and middle sleeve are each provided with two radially arranged slots. This optimization scheme, by providing slots on the end faces of the counterweight shaft, inner sleeve, and middle sleeve, facilitates the rotation operation of the counterweight shaft, inner sleeve, and middle sleeve, thereby improving the efficiency of adjusting the weight of the counterweight.

[0010] As an optimization, a through hole adapted to the swing arm is provided inside the rotating shaft, and the through hole extends radially along the rotating shaft. This optimized solution fixes the swing arm through and onto the rotating shaft, resulting in a simple structure and convenient installation.

[0011] As an optimization, an adjusting nut is threaded onto the swing arm and located above the rotating shaft, with the adjusting nut supporting the top of the rotating shaft. This optimization improves the reliability of the rotating shaft's support for the swing arm by adding the adjusting nut, and the height of the swing arm can be adjusted by turning the adjusting nut, accommodating bars of more diameters.

[0012] As an optimization, the base includes a base plate and two side plates fixed to both ends of the base plate. Two seated bearings are mounted on the base plate, and both ends of the rotating shaft are connected to the two seated bearings respectively. The rocker arm is located between the two seated bearings. This optimized base structure is simple, provides support for the seated bearings through the base, facilitates the installation of the seated bearings, and improves the flexibility of the rocker arm and rotating shaft rotation through the seated bearings.

[0013] As an optimization, the baffle is located below the base plate and is welded and fixed to the base plate and side plate, with the lower edge of the baffle flush with the lower edge of the side plate. This optimized baffle not only provides a blocking limit for the swing arm, preventing the rod from shifting back and re-counting, but also acts as a reinforcing rib, improving the structural strength of the base.

[0014] The beneficial effects of this utility model are: simple structure and convenient installation. By setting a baffle, the upper end of the swing rod can only rotate forward from the vertical position, forming a one-way swing rod, which blocks the retracting bar. From a mechanical structure perspective, it effectively prevents the bar from rebounding and retracting, thus improving the accuracy of counting. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 Sectional view of AA;

[0017] Figure 3 This is a schematic diagram showing the state of the lever when it is in the low position.

[0018] As shown in the figure:

[0019] 1. Swing rod, 2. Shaft, 3. Bearing with seat, 4. Baffle, 5. Counterweight, 6. Base plate, 7. Side plate, 8. Bar, 9. Adjusting nut. Detailed Implementation

[0020] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0021] like Figure 1 The diagram illustrates a unidirectional pendulum device for counting bars, comprising a base and a pendulum rod 1 rotatably connected to the base via a pivot 2. The pivot 2 is located between the upper and lower ends of the pendulum rod, and its axis extends horizontally. A baffle 4 is fixed to the front side of the lower end of the pendulum rod. When the lower end of the pendulum rod contacts the baffle 4, the pendulum rod 1 is in a vertical state, and the upper end of the pendulum rod is located in front of the bar 8 to be counted. Due to the baffle, the upper end of the pendulum rod can only rotate forward from a vertical position and cannot rotate backward from a vertical position, thus forming a unidirectional pendulum rod structure.

[0022] The base includes a horizontally positioned base plate 6 and two side plates 7 fixed to the left and right ends of the base plate, respectively. Two seated bearings 3 are mounted on the base plate, and both ends of the rotating shaft 2 are connected to the two seated bearings 3. The rotating shaft is mounted on the base plate through the seated bearings, and the swing arm 1 is located between the two seated bearings 3. By using seated bearings, the resistance during the rotation of the swing arm is reduced, and the flexibility of the swing arm is improved.

[0023] In this embodiment, the baffle 4 is located below the base plate 6, and the baffle 4 is fixed to the base plate 6 and the side plate 7 by welding, which improves the structural strength of the base. The lower edge of the baffle is flush with the lower edge of the side plate.

[0024] A counterweight 5 is fixedly mounted on the lower end of the pendulum rod 1. A baffle 4 is located on the movement trajectory of the counterweight 5. In this embodiment, the pendulum rod and the counterweight are welded together. Specifically, the counterweight 5 includes a counterweight shaft, an inner sleeve, a middle sleeve, and an outer sleeve arranged sequentially from the inside out. The counterweight shaft is threadedly connected to the inner sleeve, the inner sleeve is threadedly connected to the middle sleeve, and the middle sleeve is threadedly connected to the outer sleeve. The outer wall of the outer sleeve is welded to the lower end of the pendulum rod. When the counterweight needs adjustment, one or more of the counterweight shaft, inner sleeve, and middle sleeve are installed as needed to achieve the required weight.

[0025] To facilitate the rotation of the counterweight shaft, inner sleeve, and middle sleeve, this embodiment provides two radially arranged slots on the end faces of the counterweight shaft, inner sleeve, and middle sleeve, respectively. That is, the two slots are in the same diameter direction. When using tools such as calipers, the two legs can be inserted into the slots for rotation.

[0026] The rotating shaft 2 has a through hole adapted to the rocker arm 1, and the through hole extends radially through the rotating shaft 2. An adjusting nut 9 located above the rotating shaft 2 is threaded onto the rocker arm 1. The adjusting nut 9 is supported on the top of the rotating shaft, and the height of the rocker arm can be adjusted by turning the adjusting nut to meet the requirements of bars of different diameters.

[0027] In actual production, the swing arm device of this embodiment is used in conjunction with the existing bar counting device. One side plate can be fixed to the chain frame on site. The specific working process is as follows:

[0028] Initial state: The pendulum is in a vertical state under its own weight and the counterweight, and the upper end of the pendulum extends to the front of the bar's running direction;

[0029] When the bar passes through: the bar moves forward in the running direction. Due to the large speed and mass of the bar, the front end of the bar is pushed to rotate forward. At the same time, the counting device counts.

[0030] After the bar stock passes through:

[0031] When the bar completely detaches from the pendulum, the pendulum rotates back to its initial vertical position under its own weight and the counterweight. If the bar rebounds and retracts due to the action of the steel separating device, the lower end of the pendulum is blocked by the baffle, preventing the pendulum from rotating along the force of the retracting bar. This forms a mechanical block on the retracting bar, preventing it from retracting to the counting device and thus avoiding repeated counting by the counting device.

[0032] After the device in this embodiment is fully assembled, it is painted blue, which not only meets the requirements for unified equipment identification, but also facilitates quick identification and maintenance by on-site maintenance personnel.

[0033] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A unidirectional pendulum device for counting bars, characterized in that: It includes a base and a swing rod (1) rotatably connected to the base via a pivot (2). The pivot is located between the upper end and the lower end of the swing rod. The axis of the pivot (2) extends laterally. A baffle (4) is fixed to the front side of the lower end of the swing rod. When the lower end of the swing rod contacts the baffle (4), the upper end of the swing rod is located in front of the bar (8) to be counted.

2. The unidirectional pendulum device for counting bars according to claim 1, characterized in that: The lower end of the swing arm (1) is fixed with a counterweight (5), and the baffle (4) is located on the movement trajectory of the counterweight (5).

3. A unidirectional pendulum device for counting bars according to claim 2, characterized in that: The counterweight (5) includes a counterweight shaft, an inner sleeve, a middle sleeve and an outer sleeve arranged sequentially from the inside to the outside. The counterweight shaft is threaded to the inner sleeve, the inner sleeve is threaded to the middle sleeve, and the middle sleeve is threaded to the outer sleeve.

4. A unidirectional pendulum device for counting bars according to claim 3, characterized in that: The end faces of the counterweight shaft, inner sleeve, and middle sleeve are each provided with two radially arranged grooves.

5. A unidirectional pendulum device for counting bars according to claim 1, characterized in that: The rotating shaft (2) has a through hole adapted to the swing rod (1), and the through hole extends radially through the rotating shaft (2).

6. A unidirectional pendulum device for counting bars according to claim 5, characterized in that: An adjusting nut (9) located above the rotating shaft (2) is threadedly connected to the swing arm (1), and the adjusting nut (9) is supported on the top of the rotating shaft.

7. A unidirectional pendulum device for counting bars according to claim 1, characterized in that: The base includes a base plate (6) and two side plates (7) fixed to both ends of the base plate. Two seated bearings (3) are installed on the base plate. The two ends of the rotating shaft (2) are connected to the two seated bearings (3) respectively. The swing rod (1) is located between the two seated bearings (3).

8. A unidirectional pendulum device for counting bars according to claim 7, characterized in that: The baffle (4) is located below the bottom plate (6), and the baffle (4) is welded and fixed to the bottom plate (6) and the side plate (7). The lower edge of the baffle is flush with the lower edge of the side plate.

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