Swing arm type counting device

Abstract

The invention discloses a swing arm type counting device which comprises a lifting mechanism, a counting component and a swing arm assembly arranged on the lifting mechanism. The swing arm assembly comprises a swing arm and a rotating rod, the swing arm is detachably fixed to the rotating rod, the rotating rod is rotatably arranged on the lifting mechanism, and the swing arm assembly can be driven by the lifting mechanism to vertically ascend and descend; the counting component is in transmission fit with the rotating rod, and the swing arm rotates to drive the rotating rod to rotate and transmit a rotating signal to the counting component. According to the automatic counting device, counting of products is achieved through a simple mechanical structure, the cost is low, the requirements for installation and the environment are low, counting is conducted only when the products pass through and collide with the swing arm, the anti-interference capacity is high, and counting detection data are accurate; by arranging the lifting mechanism, lifting adjustment of the swing arm assembly is achieved, so that the height of the swing arm assembly can be correspondingly adjusted according to the size specifications of products on a production line, and the application range of the swing arm assembly is effectively widened.

Description

Technical Field

[0001] The invention relates to the technical field of production line automation equipment, in particular to a swing-arm type counting device. Background Art

[0002] In the production line of bottled products, it is necessary to count the packaging bottles. Currently, the commonly used counting methods include optical sensor counting, visual recognition counting and combined counting; optical sensor counting uses photoelectric signals such as optical fiber, photoelectric, and laser sensor detection to count the passing packaging bottles; visual recognition counting uses a camera to collect real-time images of the products and identifies the number of packaging bottles through image processing algorithms. It is suitable for scenarios where multiple packaging bottles pass through at the same time or plastic bottles are arranged irregularly.

[0003] The above counting methods all have their own disadvantages. For example, photoelectric sensor counting has the following disadvantages: 1. The counting accuracy is limited. The photoelectric sensor can only detect whether the object blocks the light source, but cannot identify the specific characteristics of the object. Therefore, for objects of similar shape or size, the technical accuracy may be affected; 2. Sensitive to distance and position. The photoelectric sensor needs to be installed in a specific position and maintain a certain sensing distance to accurately count. Improper installation position or irregular object size may affect the accuracy of counting; 3. It is difficult to distinguish dense objects. In dense and continuous product flow, the photoelectric sensor may not be able to clearly distinguish each independent object, and it is easy to miss or miscount; 4. It is easily affected by dust. The optical components of the photoelectric sensor are easily affected by dust or impurities, which leads to a decrease in sensitivity and requires regular cleaning and maintenance. For example, visual recognition counting has the following disadvantages: 1. High production cost. The equipment purchase and installation cost of the visual recognition system is high, especially in scenarios that require high-resolution cameras and professional lighting equipment; 2. High complexity. The visual recognition system requires professional debugging and maintenance work, and has high requirements for ambient light, product shape and color, otherwise it will easily affect the recognition effect; 3. Sensitivity limitation. For products that are too large or too small, have a single color or have a high degree of shape similarity, the recognition accuracy may be limited. First, additional algorithms are required for optimization; 4. High dependence on the environment. Light changes, dust or lens dirt will affect the effect of visual recognition. The production environment requires good lighting conditions and regular cleaning; 5. High data processing requirements. High-frequency image acquisition and processing require high data processing capabilities and require high-performance processors or hardware support. For example, the combination counting method has the following disadvantages: 1. High system complexity. The combination counting method involves a variety of technologies and equipment. The system design and integration are relatively complex and require professional personnel for maintenance and management. 2. High cost. Real-time combination counting usually requires the purchase of a variety of equipment and sensors. The initial investment cost is high, which is a heavy burden on smaller-scale enterprises. 3. High maintenance requirements. Different equipment requires regular calibration and maintenance, which increases management difficulty and maintenance costs, and requires professional technicians to operate. 4. There is a delay in response time. The data processing of multiple sensors may lead to an increase in the corresponding time, especially in situations where real-time counting requirements are high, which may affect the overall production efficiency. 5. High space requirements. The combination counting method requires more space to install and layout different sensor equipment, which is easily restricted in the production environment. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a swing-arm type counting device with simple structure, low cost and accurate technology.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a swing-arm type counting device, including a lifting mechanism, a counting component, and a swing-arm assembly arranged on the lifting mechanism; the swing-arm assembly includes a swing arm and a rotating rod, the swing arm is detachably fixed on the rotating rod, the rotating rod is rotatably arranged on the lifting mechanism, and the swing-arm assembly can be vertically lifted under the drive of the lifting mechanism; the counting component is in transmission cooperation with the rotating rod, and the rotation of the swing arm drives the rotating rod to rotate and transmits the rotation signal to the counting component.

[0006] As an improvement of the above solution: the swing arm is detachably connected to the rotating rod through a swing-arm clamping block, and the swing-arm clamping block is locked by screws.

[0007] As an improvement of the above solution: the lifting mechanism includes a lifting motor, a lead screw, a guide rod, and a connecting part; the lifting motor is in transmission connection with the lead screw, and the connecting part is in threaded cooperation with the lead screw and sleeved and cooperated with at least one fixedly arranged guide rod sleeve; the rotating rod is rotatably cooperated with the connecting part.

[0008] As an improvement of the above solution: a trapezoidal nut is fixed in the middle of the connecting part, the trapezoidal nut is fixed on the connecting part through a trapezoidal nut mounting seat, the trapezoidal nut is sleeved on the lead screw and in threaded cooperation with the lead screw; the number of the guide rods is two, and linear bearings are fixedly arranged at both ends of the connecting part through linear bearing mounting seats, and the linear bearings correspond to the guide rods one by one and are sleeved on the corresponding guide rods to form a sliding fit.

[0009] As an improvement of the above solution: the lifting mechanism further includes a support rod, the support rod is fixedly connected with the connecting part; mounting plates are fixedly connected to both ends of the support rod, and both ends of the rotating rod form a rotational fit with the two mounting plates through bearings, and one end of the rotating rod forms a transmission fit with the counting component through a coupling.

[0010] As an improvement of the above solution: the lifting mechanism further includes a lifting motor mounting seat and a lifting motor mounting plate; the lifting motor is fixedly arranged on the lifting motor mounting plate through the lifting motor mounting seat, and the guide rod is fixedly connected with the lifting motor mounting plate.

[0011] As an improvement of the above solution: the rotation direction of the swing arm is horizontal or vertical, and at least one limiting stop rod is further arranged on the rotation path of the swing arm; the limiting stop rod is fixedly connected with the mounting plate.

[0012] As an improvement of the above solution: the number of the limiting stop rods is two, and the two limiting stop rods are respectively arranged on the rotation paths of different directions of the swing arm.

[0013] As an improvement of the above solution: a buffer pad is fixed on the limiting stop rod, and the buffer pad is arranged at the part where the limiting stop rod contacts the swing arm.

[0014] As an improvement of the above solution: the counting component includes a low-inertia servo motor or an encoder.

[0015] The beneficial effects of the present invention are as follows: the present invention counts the products passing through by setting a swing arm assembly, and the rotatable swing arm in the swing arm assembly is arranged on the moving path of the product. When the product passes through the swing arm, it hits the swing arm to rotate the swing arm, thereby transmitting a rotation signal to the counting component connected thereto, and after the product passes through, the swing arm can be rotated back to its original position to wait for the next product to pass. The present invention realizes the counting of products through a simple mechanical structure, and its own cost is low, and the requirements for installation and environment are low. Moreover, the product is counted only when it passes through and hits the swing arm, and it has strong anti-interference ability and accurate counting and detection data. The present invention realizes the liftable adjustment of the swing arm assembly by setting a lifting mechanism, so that the height of the swing arm assembly can be adjusted accordingly according to the size specifications of the products on the production line, effectively improving the scope of application of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the present invention during the process of counting products;

[0017] Figure 2 It is a side view of the present invention during the process of counting products;

[0018] Figure 3 It is a schematic diagram of the assembly structure of the rotating rod and the counting component;

[0019] Figure 4 It is a front view of an embodiment in which the swing arm rotates in a horizontal direction during the process of counting products;

[0020] Figure 5 This is a side view of an embodiment in which the swing arm rotates in the horizontal direction during the process of counting products.

[0021] Marked in the figure: 100-lifting mechanism, 110-lifting motor, 120-screw, 130-guide rod, 140-connecting part, 141-trapezoidal nut, 142-trapezoidal nut mounting seat, 143-linear bearing mounting seat, 144-linear bearing, 150-support rod, 160-mounting plate, 170-coupling, 180-lifting motor mounting seat, 190-lifting motor mounting plate, 200-counting component, 300-swing arm assembly, 310-swing arm, 320-rotating rod, 330-swing arm clamp, 340-limit stop rod, 341-buffer pad, 400-bottled product DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0023] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “front”, “rear”, “left”, “right”, “up”, “down”, and “inside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of description. They do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0024] like Figure 1 and Figure 2 As shown, the swing-arm type counting device disclosed in the present invention is composed of a lifting mechanism 100, a counting component 200 and a swing-arm assembly 300; the lifting mechanism 100 serves as the basic component of the entire swing-arm type counting device, and can drive the swing-arm assembly 300 to rise and fall in the vertical direction; the counting component 200 is used to cooperate with the swing-arm assembly 300, and generates a signal driven by the action of the swing-arm assembly 300 to realize the counting of the bottled product 400; the swing-arm assembly 300 contacts the conveyed bottled product 400 through the rotatable swing arm 310, rotates under the impact of the bottled product 400, and transmits the signal to the counting component 200 through mechanical movement.

[0025] Specifically, Figure 1 and Figure 2 As shown, the swing arm assembly 300 in the present invention includes a swing arm 310 and a rotating rod 320; the structure of the swing arm 310 is not limited, and a flat plate structure can be conventionally adopted to facilitate matching with the bottled product 400, and the swing arm 310 is fixed to the rotating rod 320 in a detachable connection manner; the rotating rod 320 is installed on the lifting mechanism 100, and the lifting mechanism 100 can drive the rotating rod 320 to rise and fall vertically to drive the entire swing arm assembly 300 to rise and fall vertically, and the connection relationship between the rotating rod 320 and the lifting mechanism 100 is a rotatable connection, so that the swing arm 310 can drive the rotating rod 320 to rotate as a whole when it is impacted by the conveyed bottled product 400. The rotating rod 320 is in transmission cooperation with the counting component 200. When the swing arm 310 rotates and drives the rotating rod 320 to rotate synchronously, the rotating rod 320 can generate a corresponding signal for the counting component 200 through its own mechanical rotation, thereby realizing the counting of each rotation of the swing arm 310, and the number of bottled products 400 that have passed can be obtained according to the counting information; after the bottled product 400 passes through the swing arm 310, the swing arm 310 can rotate back to its original position under the action of its own gravity, waiting for the counting of the next bottled product 400. Since the swing arm 310 in the present invention will rotate only when it is hit by the bottled product 400, that is, the movement of the swing arm 310 is only affected by the bottled product 400, the work of the present invention is not easily affected by the external environment, and will not be triggered by mistake, thereby effectively improving the accuracy of the counting work.

[0026] Furthermore, in the present invention, a swing arm clamp 330 is provided to realize a rotatable connection between the swing arm 310 and the rotating rod 320; Figure 1 As shown, two swing arm clamps 330 are fixed at one end of the swing arm 310 that cooperates with the rotating rod 320. One end of the swing arm clamp 330 is fixedly connected to the swing arm 310 by screws, and the other end of the swing arm clamp 330 is clamped on the rotating rod 320, and the swing arm clamp 330 is locked on the rotating rod 320 by screws.

[0027] Specifically, Figure 1 and Figure 2 As shown, the lifting mechanism 100 used in the present invention includes a lifting motor 110, a screw rod 120, a guide rod 130 and a connecting portion 140. The output end of the lifting motor 110 is vertically arranged downward, and the output end of the lifting motor 110 is in transmission cooperation with the screw rod 120, which is also vertically arranged. The lifting motor 110 drives the screw rod 120 to rotate when it works. The connecting part 140 serves as the connecting part between the swing arm assembly 300 and the lifting mechanism 100, and the rotating rod 320 and the connecting part 140 can be rotatably matched; the connecting part 140 and the screw rod 120 are rotatably matched, and a trapezoidal nut mounting seat 142 is fixedly provided in the middle of the connecting part 140, and a trapezoidal nut 141 is installed in the trapezoidal nut mounting seat 142. The trapezoidal nut 141 is sleeved on the screw rod 120 and forms a threaded match with the screw rod 120; at the same time, a linear bearing mounting seat 143 is fixedly provided at the end of the connecting part 140, and a linear bearing 144 is installed in the linear bearing mounting seat 143. The linear bearing 144 is sleeved on the guide rod 130, and the guide rod 130 is vertically arranged and fixed. The linear bearing 144 and the guide rod 130 are clearance matched so that the support bearing 144 can slide in the vertical direction along the guide rod 130. When the lead screw 120 rotates under the drive of the lifting motor 110, since the connecting part 140 is guided and limited by the guide rod 130, and the lead screw 120 and the lifting motor 110 are fixed as a whole, relative lifting and lowering will occur between the lead screw 120 and the connecting part 140, and the connecting part 140 will be vertically lifted and lowered along the guide rod 130, thereby driving the swing arm assembly 300 connected to the connecting part 140 to be vertically lifted and lowered as a whole. Accordingly, the vertical height of the swing arm 310 can be adjusted, so that the swing arm 310 can be suitable for counting bottled products 400 of different height specifications.

[0028] Specifically, Figure 1 and Figure 2 As shown, the installation of the lifting mechanism 100 in the present invention is realized by the lifting motor mounting seat 180 and the lifting motor mounting plate 190. The top end of the guide rod 130 is fixedly connected to the lifting motor mounting plate 190, the lifting motor mounting seat 180 is fixedly arranged on the lifting motor mounting plate 190, and the lifting motor 110 is fixed to the lifting motor mounting plate 190 through the lifting motor mounting seat 180.

[0029] Furthermore, in order to improve the stability of the lifting action of the entire swing arm assembly 300, as Figure 2 As shown, two guide rods 130 are used in the present invention, and correspondingly, the number of linear bearings 144 is also two; a linear bearing mounting seat 143 is fixedly provided at both ends of the connecting portion 140, and the two linear bearings 144 are respectively installed at the two ends of the connecting portion 140 through the corresponding linear bearing mounting seats 143, and are respectively sleeved on the corresponding guide rods 130 to form a sliding fit.

[0030] Furthermore, the connection between the swing arm assembly 300 and the connecting portion 140 in the present invention is achieved by the support rod 150. Figures 1 to 3 As shown, the support rod 150 is fixed on the connecting part 140, and a mounting plate 160 is fixed at both ends of the support rod 150 respectively. The two mounting plates 160 are arranged in parallel and spaced apart, and the rotating rod 320 is installed between the two mounting plates 160; the two ends of the rotating rod 320 form a rotatable fit with the two mounting plates 160 through bearings respectively, and in order to realize the transmission fit between the rotating rod 320 and the counting component 200, one end of the rotating rod 320 can be passed through the corresponding mounting plate 160, and then this end of the rotating rod 320 forms a transmission fit with the counting component 200 through the coupling 170.

[0031] In the present invention, the swing arm 310 can be rotated in a horizontal direction or in a vertical direction. Figure 1 and Figure 2 As shown, in this embodiment, the rotation direction of the swing arm 310 is vertical; Figure 4 and Figure 5 As shown, in this embodiment, the swing arm 310 rotates in a horizontal direction. The above two rotation modes can be selected according to actual production needs, and both can realize the counting of bottled products 400. However, since bottled products 400 of different specifications are conveyed at different speeds on the production line, when the conveying speed of the bottled products 400 is too fast, the swing arm 310 is subjected to a large impact kinetic energy of the bottled products 400, and it is easy to over-rotate. In order to avoid the above situation, the present invention sets a limit stop rod 340 on the rotation path of the swing arm 310 to limit the rotation angle of the swing arm 310. Figure 1As shown, the limit stopper 340 is arranged on the rotation path of the swing arm 310 and fixed on the mounting plate 160. After the swing arm 310 is hit by the bottled product 400 and rotates to contact the limit stopper 340, it will stop rotating under the limiting action of the limit stopper 340 and rotate in the opposite direction to return to its original position. The number of the limit stopper 340 is preferably two, and the two limit stopper rods 340 are respectively arranged on the rotation path of the swing arm 310 in different directions; for example, when the swing arm 310 rotates vertically, the two limit stopper rods 340 are respectively located at the front and rear of the swing arm 310 in the vertical direction; for example, when the swing arm 310 rotates horizontally, the two limit stopper rods 340 are respectively located at the front and rear of the swing arm 310 in the horizontal direction.

[0032] Furthermore, in order to reduce the relative force between the swing arm 310 and the limit stopper 340, so as to prevent the swing arm 310 from rebounding significantly after being blocked by the limit stopper 340, the present invention fixes a buffer pad 341 on the limit stopper 340, and the buffer pad 341 is arranged at the contact position between the limit stopper 340 and the swing arm 310. The buffer pad 341 can be made of a flexible material with good energy absorption effect, such as sponge, silica gel, foam, etc.

[0033] The counting component 200 used in the present invention can adopt a low-inertia servo motor or an encoder. When a low-inertia servo motor is adopted, when the bottled product 400 being transported hits the swing arm 310, the swing arm 310 drives the rotating shaft of the low-inertia servo motor to rotate through the rotating rod 320, so that the low-inertia servo motor generates a signal to realize the technology of counting the bottled product 400; when the bottled product 400 passes through the swing arm 310, the low-inertia servo motor can generate torque to cause the swing arm 310 to rotate and reset; at the same time, it can also cooperate with the limit stopper 340. Since the swing arm 310 needs to send a signal to the low-inertia servo motor to stop releasing the torque during the resetting process, the limit stopper 340 can provide the low-inertia servo motor with a signal to stop releasing the torque by blocking the swing arm 310. When an encoder is used, the swing arm 310 can return to its original position after rotation by its own gravity, or a torsion spring or a spring-like elastic member can be provided to cause the swing arm 310 to return to its original position. The encoder can also generate a signal driven by the rotation of the rotating rod 320 and analyze the signal to count the bottled product 400.

Claims

1. Swing arm type counting device, characterized in that: The invention comprises a lifting mechanism (100), a counting component (200), and a swing arm assembly (300) arranged on the lifting mechanism (100); the swing arm assembly (300) comprises a swing arm (310) and a rotating rod (320); the swing arm (310) is detachably fixed on the rotating rod (320); the rotating rod (320) is rotatably arranged on the lifting mechanism (100); the swing arm assembly (300) can be vertically lifted or lowered under the drive of the lifting mechanism (100); the counting component (200) is in transmission cooperation with the rotating rod (320); the swing arm (310) rotates to drive the rotating rod (320) to rotate and transmits the rotation signal to the counting component (200).

2. The swing-arm counting device according to claim 1, characterized in that: The swing arm (310) is detachably connected to the rotating rod (320) via a swing arm clamp (330), and the swing arm clamp (330) is locked by a screw.

3. The swing-arm counting device according to claim 1, characterized in that: The lifting mechanism (100) comprises a lifting motor (110), a screw rod (120), a guide rod (130) and a connecting portion (140); the lifting motor (110) is transmission-connected to the screw rod (120); the connecting portion (140) is threadedly engaged with the screw rod (120) and sleeve-engaged with at least one fixed guide rod (130); the rotating rod (320) is rotatably engaged with the connecting portion (140).

4. The swing-arm counting device according to claim 3, characterized in that: A trapezoidal nut (141) is fixed in the middle of the connecting portion (140), the trapezoidal nut (141) is fixed to the connecting portion (140) via a trapezoidal nut mounting seat (142), the trapezoidal nut (141) is sleeved on the screw rod (120) and threadedly matched with the screw rod (120); the number of the guide rods (130) is two, and linear bearings (144) are fixedly provided at both ends of the connecting portion (140) via linear bearing mounting seats (143), the linear bearings (144) correspond to the guide rods (130) one by one and are sleeved on the corresponding guide rods (130) to form a sliding fit.

5. The swing-arm counting device according to claim 3, characterized in that: The lifting mechanism (100) further comprises a support rod (150), wherein the support rod (150) is fixedly connected to the connecting portion (140); both ends of the support rod (150) are fixedly connected to mounting plates (160); both ends of the rotating rod (320) are in rotational cooperation with the two mounting plates (160) via bearings; and one end of the rotating rod (320) is in transmission cooperation with the counting component (200) via a coupling (170).

6. The swing-arm counting device according to claim 3, characterized in that: The lifting mechanism (100) further comprises a lifting motor mounting seat (180) and a lifting motor mounting plate (190); the lifting motor (110) is fixedly arranged on the lifting motor mounting plate (190) via the lifting motor mounting seat (180), and the guide rod (130) is fixedly connected to the lifting motor mounting plate (190).

7. The swing-arm counting device according to claim 5, characterized in that: The rotation direction of the swing arm (310) is horizontal or vertical, and at least one limiting stop rod (340) is provided on the rotation path of the swing arm (310); the limiting stop rod (340) is fixedly connected to the mounting plate (160).

8. The swing-arm counting device according to claim 7, characterized in that: There are two limit bars (340), and the two limit bars (340) are respectively arranged on the rotation paths of the swing arm (310) in different directions.

9. The swing-arm counting device according to claim 7, characterized in that: A buffer pad (341) is fixed on the position-limiting blocking rod (340), and the buffer pad (341) is arranged at the position where the position-limiting blocking rod (340) contacts the swing arm (310).

10. The swing-arm counting device according to claim 1, characterized in that: The counting component (200) comprises a low-inertia servo motor or an encoder.

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