Vibration weighing device for small part production

Abstract

The utility model relates to the field of weighing devices, in particular to a vibration weighing device for small part production. Comprising a material supply unit, a feeding unit and a weighing unit. Wherein the feeding unit is provided with a first feeding mechanism and a second feeding mechanism, and the discharging end of the first feeding mechanism corresponds to the feeding end of the second feeding mechanism; the feeding unit is arranged corresponding to the discharging end of the second feeding mechanism and provided with a first feeding groove and a second feeding groove. The weighing unit is arranged corresponding to the discharging end of the feeding unit and provided with a hopper for containing parts, and the bottom end of the hopper is connected with a weight sensor. The first feeding mechanism, the second feeding mechanism and the feeding unit are arranged in series, and the problem that the feeding amount is difficult to control due to the fact that a large number of parts are fed at a time is solved.

Description

Technical Field

[0001] The utility model relates to the field of weighing devices, in particular to a vibration weighing device used for the production of small parts. Background Art

[0002] Small parts are metal or plastic parts with a volume less than 30*30mm. The characteristics of these parts are small size and light weight. Manual operation requires a lot of energy, and mechanical operation is easy to rush out due to inertia or splash out when falling;

[0003] During the production process, small parts need to be packaged according to a set weight. However, small parts are small in size, and manual weighing and packaging is not only labor-intensive but also prone to errors. The traditional method of weighing with a conveying device and a weighing device is that the traditional conveying device is a transmission belt or a vibration device, which cannot accurately control small parts such as small parts with small size and light weight. Due to inertia, the small parts are easily conveyed to the weighing device when the weighing device has reached the preset value. Too many small parts fall into the packaging device, which not only causes waste, but also too many small parts easily damage the packaging, causing the packaging to be damaged. Utility Model Content

[0004] The utility model aims to provide a vibration weighing device for small parts production, so as to solve the problem that the conveying device in the prior art cannot accurately control the amount of small parts delivered.

[0005] The technical solution of the utility model is: a vibration weighing device for small parts production, comprising:

[0006] A feeding unit, comprising a first feeding mechanism and a second feeding mechanism, wherein the discharge end of the first feeding mechanism is arranged corresponding to the feed end of the second feeding mechanism;

[0007] A feeding unit, arranged corresponding to the discharge end of the second feeding mechanism, having a first feeding trough and a second feeding trough;

[0008] The weighing unit is arranged corresponding to the discharging end of the feeding unit and has a hopper for accommodating parts, and a weight sensor is connected to the bottom end of the hopper.

[0009] Preferably, a flow limiter is hinged in the first feeding trough, one end of the flow limiter abuts against an inner wall of the first feeding trough, and the other end is set as the feeding end and corresponds to the discharge end of the first feeding trough, and the space formed by the feeding end and the other inner wall of the first feeding trough is constructed as the discharge end of the first feeding trough.

[0010] Preferably, a bucket cover is provided at the bottom end of the hopper, the bucket cover is hinged to the hopper and connected to a driving device for controlling the opening and closing of the bucket cover, and the execution end of the driving device is connected to the bucket cover via a weight sensor.

[0011] Preferably, the first feeding mechanism and the second feeding mechanism respectively have a first material trough and a second material trough, and a first vibrator and a second vibrator respectively connected to the first material trough and the second material trough, and the first feeding trough and the second feeding trough are respectively connected to a third vibrator and a fourth vibrator.

[0012] Preferably, the actual reading A of the weight sensor and the increasing preset values ​​A1, A2, A3 are set;

[0013] When A2>A≥A1, the first vibrator and the fourth vibrator stop working;

[0014] When A3>A≥A2, the second vibrator stops working.

[0015] Preferably, baffles are fixed to the discharge ends of the first trough and the second trough.

[0016] Compared with the prior art, the advantages of the utility model are:

[0017] (1) In the present application, the first feeding mechanism, the second feeding mechanism and the feeding unit are arranged in series, thereby avoiding the problem of a large number of parts being put in at one time, resulting in the difficulty in controlling the amount of parts put in.

[0018] (2) A flow limiter is provided in the first feeding trough so that the parts in the first feeding trough can be delivered one by one from the discharge end of the first feeding trough, further improving the accuracy of part delivery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 This is a structural diagram of a vibration weighing device for small parts production described in the utility model;

[0021] Figure 2 This is a structural diagram of a vibration weighing device for small parts production described in the utility model;

[0022] Figure 3 This is a side view of the weighing unit of the utility model;

[0023] Wherein: 1. feeding unit, 11. first feeding mechanism, 111. first material trough, 112. first vibrator, 12. second feeding mechanism, 121. second material trough, 122. second vibrator, 2. feeding unit, 21. first feeding trough, 22. second feeding trough, 23. third vibrator, 24. fourth vibrator, 25. current limiter, 3. weighing unit, 31. hopper, 32. hopper cover, 33. driving device, 4. baffle. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0025] like Figure 1 - Figure 3 As shown, a vibration weighing device for small parts production includes a feeding unit 1, a feeding unit 2 and a weighing unit 3. The parts are put into the feeding unit 2 from the feeding unit 1 and then sent into the weighing unit 3 for weighing.

[0026] The feeding unit 1 includes a first feeding mechanism 11 and a second feeding mechanism 12. The first feeding mechanism 11 is arranged above the second feeding mechanism 12, and the discharge end of the first feeding mechanism 11 is arranged corresponding to the feed end of the second feeding mechanism 12. The first feeding mechanism 11 includes a first trough 111 and a first vibrator 112 fixed below, and the second feeding mechanism 12 includes a second trough 121 and a second vibrator 122 fixed below. The parts enter the first trough 111 from the funnel above the first trough 111, enter the second trough 121 under the action of the first vibrator 112, and enter the feeding unit 2 under the action of the second vibrator 122. In addition, a baffle 4 is fixed above the discharge ends of the first trough 111 and the second trough 121 to stop the parts when they are put into the first trough 111 and the second trough 121 to prevent the parts from flying.

[0027] The feeding unit 2 includes a first feeding trough 21 and a second feeding trough 22. The feeding ends of the first feeding trough 21 and the second feeding trough 22 are arranged corresponding to the discharging end of the second feeding mechanism 12. The third vibrator 23 and the fourth vibrator 24 are connected to the lower parts of the first feeding trough 21 and the second feeding trough 22, respectively. A flow restrictor 25 is hingedly connected to the first feeding trough 21 through a connecting rod. One end of the flow restrictor 25 abuts against an inner wall of the first feeding trough 21, and the other end extends to the discharging end of the first feeding trough 21, and maintains a part-sized spacing with the other inner wall of the first feeding trough 21. In this way, the parts in the first feeding trough 21 move along the wall surface of the flow restrictor 25, and are discharged one by one from the discharging end of the first feeding trough 21.

[0028] The weighing unit 3 is arranged corresponding to the discharge end of the feeding unit 2, and includes a hopper 31, which is arranged vertically, with an opening at the top for receiving parts, and a hopper cover 32 at the bottom. One end of the hopper cover 32 is hinged to the hopper 31, and is connected to a driving device 33 to drive it to rotate around the hinged end to realize the opening and closing of the hopper cover 32. A weight sensor is installed at the execution end of the driving device 33 to detect the weight of the parts in the hopper 31 when the hopper cover 32 is closed. The driving device 33 can be a motor or a cylinder.

[0029] The actual reading A of the weight sensor is set, and the preset values ​​are A1, A2, and A3. In this embodiment, A1=0.9A3, and A2 is set to any value from A1 to A3.

[0030] When A2>A≥A1, the first vibrator 112 and the fourth vibrator 24 stop working, and the second vibrator 122 drives the remaining parts in the second trough 121 to be put into the first feeding trough 21 and the second feeding trough 22.

[0031] When A3>A≥A2, the second vibrator 122 also stops working, and the remaining third vibrator 23 drives the parts in the first feeding trough 21 to pass through the discharge end of the first feeding trough 21 along the limiter 25 in sequence until the actual reading A of the weight sensor reaches the preset value A3.

[0032] When working:

[0033] The parts are first put into the first trough 111, and the first vibrator 112, the second vibrator 122, the third vibrator 23, and the fourth vibrator 24 are started. The parts fall from the first trough 111 into the second trough 121 through vibration, and then continue to fall from the second trough 121 into the first feeding trough 21 and the second feeding trough 22 in the feeding unit 2, and continue to fall into the hopper 31 of the weighing unit 3.

[0034] During this process, when the weight sensor reading A of the weighing unit 3 reaches the system preset value A1, the first vibrator 112 and the fourth vibrator 24 stop working, and the second trough 121 and the first feeding trough 21 continue to operate for precise compensation. When the weight sensor reading A reaches the preset value A2, the second vibrator 122 also stops working, leaving only the third vibrator 23 to drive the parts in the first feeding trough 21 to fall into the hopper 31 one by one.

[0035] When the weight of the parts in the hopper 31 reaches A3, the driving device 33 drives the hopper cover 32 to open, and the parts that meet the weight standard are sent to the next process.

[0036] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.

Claims

1. A vibrating weighing device for small parts production, characterized in that: include: A feeding unit, comprising a first feeding mechanism and a second feeding mechanism, wherein the discharge end of the first feeding mechanism is arranged corresponding to the feed end of the second feeding mechanism; A feeding unit, arranged corresponding to the discharge end of the second feeding mechanism, having a first feeding trough and a second feeding trough; The weighing unit is arranged corresponding to the discharging end of the feeding unit and has a hopper for accommodating parts, and a weight sensor is connected to the bottom end of the hopper.

2. A vibrating weighing device for small parts production according to claim 1, characterized in that: A flow limiter is hinged in the first feeding trough, one end of the flow limiter abuts against an inner wall of the first feeding trough, and the other end is set as a feeding end and is corresponding to the discharge end of the first feeding trough, and the space formed by the feeding end and the other inner wall of the first feeding trough is constructed as the discharge end of the first feeding trough.

3. A vibrating weighing device for small parts production according to claim 2, characterized in that: A bucket cover is arranged at the bottom end of the hopper, the bucket cover is hinged to the hopper and is connected to a driving device for controlling the opening and closing of the bucket cover, and the execution end of the driving device is connected to the bucket cover through a weight sensor.

4. A vibrating weighing device for small parts production according to claim 3, characterized in that: The first feeding mechanism and the second feeding mechanism respectively have a first feeding trough and a second feeding trough, and a first vibrator and a second vibrator respectively connected to the first feeding trough and the second feeding trough, and the first feeding trough and the second feeding trough are respectively connected to a third vibrator and a fourth vibrator.

5. A vibrating weighing device for small parts production according to claim 4, characterized in that: Set the actual reading A of the weight sensor and the increasing preset values ​​A1, A2, A3; When A2>A≥A1, the first vibrator and the fourth vibrator stop working; When A3>A≥A2, the second vibrator stops working.

6. A vibrating weighing device for small parts production according to claim 4, characterized in that: Baffles are fixed at the discharge ends of the first trough and the second trough.

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