Material quantitative weighing assembly and material quantitative weighing method

Abstract

The invention discloses a material quantitative weighing assembly and a material quantitative weighing method. The material quantitative weighing assembly comprises a weighing conveying line, wherein the weighing conveying line is provided with a first weighing module; the weight supplementing conveying line is in butt joint with the weighing conveying line; the plurality of prepared material placing devices are arranged beside the weight supplementing conveying line; each prepared material placing device is provided with a second weighing module; the weight supplementing carrying device is used for carrying the materials of the prepared material placing device into the containers on the weight supplementing conveying line; and the weight compensation control module is used for controlling the weight compensation carrying device. The material quantitative weighing method comprises the following steps: preparing a preparation material; the first weighing module returns to zero; the first weighing module accumulates the weight of the materials; when the accumulated weight reaches a set value, the container is conveyed to a weight supplementing conveying line; the weight compensation control module selects the weight combination of the prepared materials and controls the weight compensation carrying device to pick up the corresponding materials; and the weight supplementing carrying device carries the materials into a container on the weight supplementing conveying line.

Description

Technical Field

[0001] The invention relates to the technical field of cartoning machines, in particular to a material quantitative weighing component and a material quantitative weighing method. Background Art

[0002] Some materials need to be quantitatively weighed and packaged before they can be sold. The existing weighing method is to transport the container (i.e., packaging box) to the quantitative weighing device through a conveying device, the quantitative weighing device is reset to zero, and then the material is moved by a sorting robot and other equipment to move the material into the container until the weight in the container exceeds the target weight, then the boxing work stops and the container with the material is transported to the next process.

[0003] The above method can only ensure that the weight in the container is not less than a certain value, but cannot ensure the difference between the cumulative weight of the material in the container and the target weight, which often leads to the problem that the cumulative weight of the material in the container exceeds the target weight too much, resulting in reduced profits for the factory. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a material quantitative weighing component to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0005] The solution of the present invention to solve its technical problem is:

[0006] The material quantitative weighing component has a first direction and includes:

[0007] A weighing conveyor line, wherein the weighing conveyor line is provided with a first weighing module;

[0008] A reweighting conveyor line, wherein the weighing conveyor line and the reweighting conveyor line are arranged along a first direction, the reweighting conveyor line is butted against an end of the weighing conveyor line, and the conveying directions of the reweighting conveyor line and the weighing conveyor line are both parallel to the first direction;

[0009] A preparation material placement device, the preparation material placement device is arranged beside the replenishing weight conveying line, and the preparation material placement device is provided with a plurality of preparation material placement devices; the preparation material placement device is provided with a second weighing module, and the preparation material placement device is used to support and weigh a single material;

[0010] A re-weight transport device, which is used to transport the materials of the preparation material placement device to the container on the re-weight conveying line;

[0011] A re-weighting control module controls the re-weighting transport device so that the re-weighting transport device selectively transports materials in a plurality of the preparatory material placement devices to containers on the re-weighting conveying line.

[0012] As a further improvement of the above technical solution, there are at least two weight-replenishing and transporting devices.

[0013] As a further improvement of the above technical solution, the weight-adding and transporting device comprises:

[0014] Weight-replenishing suction cup structure;

[0015] a first supplementary weight driving member, wherein the first supplementary weight driving member drives the supplementary weight suction cup structure to move along the first direction;

[0016] a second weight-adding driving member, the second weight-adding driving member driving the weight-adding suction cup structure to move up and down;

[0017] A third weight-adding driving member drives the weight-adding suction cup structure to move back and forth between the preparatory material placement device and the weight-adding conveying line.

[0018] As a further improvement of the above technical solution, the second supplementary weight driving component and the third supplementary weight driving component are both pneumatic linear driving devices.

[0019] As a further improvement of the above technical solution, the weight-adding suction cup structure is a vacuum suction cup.

[0020] As a further improvement of the above technical solution, six of the prepared material placement devices are provided, and the plurality of prepared material placement devices are arranged along the first direction.

[0021] As a further improvement of the above technical solution, the reweighting conveyor line and the weighing conveyor line operate independently.

[0022] As a further improvement of the above technical solution, it also includes an empty container feeding conveyor line, the end of which is connected to the weighing conveyor line, and the reweighting conveyor line, the weighing conveyor line and the empty container feeding conveyor line operate independently.

[0023] A material quantitative weighing method, using any of the material quantitative weighing components described above, the material quantitative weighing method comprising:

[0024] Take multiple materials of the same specification, weigh them and find the average weight W, set the G value, G is M times W, the value of M is between N and N+1, N is a positive integer and at least 1;

[0025] Transport multiple materials to multiple preparatory material placement devices to ensure that each preparatory material placement device has a single material;

[0026] The empty container is transported to the weighing conveying line, and the first weighing module of the weighing conveying line is reset to zero;

[0027] Transfer the material to the container on the weighing conveyor line. The first weighing module accumulates the weight. Let the target weight be T0, the accumulated weight be T1, and ΔT = T0 - T1;

[0028] When ΔT < G, the weighing conveyor line transports the container filled with the material to the supplementary weighing conveyor line;

[0029] The supplementary weighing control module combines the weights of the materials in multiple preliminary material placement devices, selects the weight combination closest to ΔT, and the supplementary weighing control module controls the supplementary weighing handling device to pick up the material corresponding to the selected weight combination;

[0030] The supplementary weighing handling device transports the picked-up material to the container on the supplementary weighing conveyor line.

[0031] As a further improvement of the above technical solution, N is set to 1.

[0032] The beneficial effects of the present invention are as follows: Before transferring the material to the container, other components of the cartoning machine first transfer the material to the preliminary material placement device, so that each preliminary material placement device contains a single material, and at the same time each preliminary material placement device records the weight of the corresponding single material. Subsequently, the weighing conveyor line weighs the material in the container arranged on the weighing conveyor line. When the accumulated weight of the material in the container exceeds the set value, the weighing conveyor line transports the container filled with the material to the supplementary weighing conveyor line. The supplementary weighing control module calculates the difference between the target weight and the accumulated weight, and combines the materials on multiple preliminary material placement devices, selects the weight combination closest to the difference between the target weight and the accumulated weight, and then the supplementary weighing handling device picks up the material corresponding to the selected weight combination and transports it to the container on the supplementary weighing conveyor line to complete the supplementary weighing step. This solution can make the total weight of the material in the container closer to the target weight, so as to avoid the cartoning weight exceeding the target weight too much, thereby effectively protecting the profit of the enterprise.

[0033] The present invention is used in the technical field of cartoning machines. Description of the Drawings

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly describe the drawings required for the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present invention, rather than all the embodiments. Without creative work, those skilled in the art can also obtain other design solutions and drawings based on these drawings.

[0035] Figure 1 It is a schematic diagram of the material quantitative weighing assembly in the cartoning machine according to the embodiment of the present invention;

[0036] Figure 2 is Figure 1A partial enlarged schematic diagram of part A;

[0037] Figure 3 It is a schematic diagram of the overall structure of a weight-adding transport device and a preparatory material placement device according to an embodiment of the present invention;

[0038] Figure 4 It is a step diagram of a material quantitative weighing method according to an embodiment of the present invention.

[0039] In the figure, 100, empty container feeding conveyor line; 200, weighing conveyor line; 300, replenishing weight conveyor line; 400, preparation material placement device; 500, replenishing weight transport device; 510, replenishing weight suction cup structure; 520, first replenishing weight drive member; 530, second replenishing weight drive member; 540, third replenishing weight drive member; 541, first linear cylinder; 542, second linear cylinder; 610, limit baffle; 611, guide plate. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0041] Reference Figure 1 Paper Figure 4 The material quantitative weighing component is provided with a first direction, a second direction and a third direction which are orthogonal to each other. The material quantitative weighing component comprises: an empty container feeding conveying line 100, a weighing conveying line 200, a reweighting conveying line 300, a preparatory material placing device 400, a reweighting conveying device 500, and a reweighting control module.

[0042] The weight-adding control module is integrated into the control system of the cartoning machine. In other embodiments, the weight-adding control module can also be set as a separate control module.

[0043] The conveying directions of the empty container feeding conveyor line 100, the weighing conveyor line 200, and the re-weighting conveyor line 300 are all parallel to the first direction. The empty container feeding conveyor line 100, the weighing conveyor line 200, and the re-weighting conveyor line 300 are sequentially arranged along the first direction.

[0044] The empty container feeding conveyor line 100 is configured as a conventional belt conveyor (of course, the belt conveyor includes components such as a drive motor, a conveyor belt, and a transmission structure. The belt conveyor is a commonly used component in the art, and the specific structure of the belt conveyor will not be described in detail here).

[0045] The starting end of the weighing conveyor line 200 is butted against the end of the empty container feeding conveyor line 100, and the empty container feeding conveyor line 100 conveys empty containers to the weighing conveyor line 200. The weighing conveyor line 200 and the empty container feeding conveyor line 100 are each equipped with a driving motor, so that the weighing conveyor line 200 and the empty container feeding conveyor line 100 can operate independently, thereby ensuring that each step of quantitative weighing is carried out in an orderly manner.

[0046] The weighing conveyor line 200 is a transmission weighing platform, which is composed of a belt conveyor and a first weighing module (the first weighing module is not shown in the figure). The first weighing module is set as a weighing sensor and is arranged at the bottom of the belt conveyor. When the container is transported into the weighing conveyor line 200 by other components of the cartoning machine, the first weighing module automatically returns to zero to avoid the weight of the container causing an error in the total weight of the boxed material.

[0047] The starting end of the reweighting conveyor line 300 is butted against the end of the weighing conveyor line 200. After the container on the weighing conveyor line 200 is loaded to the set weight, the weighing conveyor line 200 conveys the container to the reweighting conveyor line 300. The reweighting conveyor line 300 is a conventional belt conveyor. The reweighting conveyor line 300 and the weighing conveyor line 200 are each equipped with a driving motor so that the reweighting conveyor line 300 and the weighing conveyor line 200 can operate independently, thereby ensuring that each step of quantitative weighing is carried out in an orderly manner.

[0048] By setting up the empty container feeding conveyor line 100, during the process of loading containers on the weighing conveyor line 200, the empty container feeding conveyor line 100 replenishes containers and waits for the loading of containers on the weighing conveyor line 200 to be completed. After the loading of containers on the weighing conveyor line 200 is completed, the weighing conveyor line 200 conveys the containers filled with materials to the replenishing conveyor line 300, and then the empty container feeding conveyor line 100 immediately conveys the empty containers to the weighing conveyor line 200, so that the weighing conveyor line 200 can quickly carry out the next loading, thereby ensuring the operation efficiency of the cartoning machine.

[0049] Specifically, in this embodiment, both sides of the empty container feeding conveyor line 100, both sides of the weighing conveyor line 200, and both sides of the weight replenishing conveyor line 300 are provided with limit baffles 610, which can limit the container, thereby preventing the container from falling off the conveyor line and other undesirable situations. Specifically, in this embodiment, the end of the limit baffle 610 is provided with a guide plate 611, which is inclined and can guide the container so that the container can smoothly transition between two adjacent conveyor lines.

[0050] The preparation material placement device 400 is arranged beside the weight replenishing conveying line 300 (the preparation material placement device 400 and the weight replenishing conveying line 300 are arranged in sequence in the second direction), and the number of the preparation material placement devices 400 is set to multiple, and the multiple preparation material placement devices 400 are arranged at equal intervals along the first direction. The preparation material placement device 400 is provided with a second weighing module (the second weighing module is not shown in the figure). The sorting device of the cartoning machine moves a single material to the preparation material placement device 400, and the preparation material placement device 400 supports the material and weighs the single material.

[0051] Specifically, in this embodiment, the number of the preparation material placement devices 400 is set to six, and the six preparation material placement devices 400 are arranged along the first direction. When the material is placed in the preparation material placement device 400, the weight of the corresponding single material can be known, and the weight replenishment control module performs a single or two weight combinations on the weight of the material in the preparation material placement device 400, and the number of combinations is That is, 21 kinds, the number of the prepared material placement devices 400 can be increased according to demand, and the corresponding number of weight combinations will also increase.

[0052] The re-weighting transport device 500 is used to transport the materials from the prepared material placement device 400 to the container of the re-weighting conveying line 300 to achieve re-weighting.

[0053] The weight-adding transport device 500 includes: a weight-adding suction cup structure 510 , a first weight-adding driving component 520 , a second weight-adding driving component 530 , and a third weight-adding driving component 540 .

[0054] The weight-replenishing suction cup structure 510 is configured as a vacuum suction cup.

[0055] The first weight-adding driving member 520 is fixedly mounted on the cartoning machine frame. The first weight-adding driving member 520 is a belt-driven linear module. The driving direction of the first weight-adding driving member 520 is arranged parallel to the first direction. The first weight-adding driving member 520 is used to drive the weight-adding suction cup structure 510 to move along the first direction. In other embodiments, the first weight-adding driving member 520 may also be arranged as a linear module with other driving modes or directly use a conventional linear driving structure such as a linear cylinder. Those skilled in the art may select the first weight-adding driving member 520 according to actual needs.

[0056] A supplementary weight connecting plate is fixed to the output end of the first supplementary weight driving member 520 .

[0057] The second weight-adding driving member 530 is fixedly mounted on the weight-adding connecting plate. The second weight-adding driving member 530 is configured as a linear cylinder. In other embodiments, the second weight-adding driving member 530 may also be configured as other commonly used linear driving devices. Those skilled in the art may select the second weight-adding driving member 530 according to actual needs. The driving direction of the second weight-adding driving member 530 is parallel to the up-down direction. The second weight-adding driving member 530 is used to drive the weight-adding suction cup structure 510 to move in the up-down direction.

[0058] The third weight-adding driving member 540 includes two linear cylinders, which are respectively set as a first linear cylinder 541 and a second linear cylinder 542. The first linear cylinder 541 and the second linear cylinder 542 are arranged in the front-to-back direction. The first linear cylinder 541 is fixedly installed at the output end of the second weight-adding driving member 530, and the second linear cylinder 542 is fixedly installed at the output end of the first linear cylinder 541. The driving directions of the first linear cylinder 541 and the second linear cylinder 542 are the same, both parallel to the second direction. The third weight-adding driving member 540 is used to drive the weight-adding suction cup structure 510 to move along the second direction, so that the weight-adding suction cup structure 510 moves back and forth between the preparation material placement device 400 and the weight-adding conveying line 300. By setting the third weight-adding driving member 540 as a structure including two linear cylinders, the space occupied by the third weight-adding driving member 540 in the second direction when it is folded can be reduced, so that other components of the cartoning machine can have a larger range of movement.

[0059] Specifically, in this embodiment, the number of the supplementary weight transporting devices 500 is set to two, and the two supplementary weight transporting devices 500 share the same first supplementary weight driving component 520, that is, the second supplementary weight driving components 530 of the two supplementary weight transporting devices 500 are fixedly installed on the same supplementary weight connecting plate.

[0060] Set the number of the weight compensation handling devices 500 to two so that the material quantitative weighing assembly can simultaneously transport two materials into the containers on the weight compensation conveying line 300. Compared with using a single weight compensation handling device 500, the two weight compensation handling devices 500 do not need to move back and forth repeatedly, thereby reducing the movement steps of the weight compensation handling device 500 and improving the working efficiency of the material quantitative weighing assembly. In other embodiments, the number of the weight compensation handling devices 500 can also be set to three, four, etc. according to actual needs, and those skilled in the art can select the number of the weight compensation handling devices 500 according to actual needs.

[0061] A material quantitative weighing method includes:

[0062] Step S001: The staff randomly selects 10 - 20 materials of the same specification, weighs the selected materials, then calculates the average weight of the extracted materials, sets the average weight as W, and sets a G value. G is one to two times of W, and the specific ratio of G to W is set according to experience; for small - sized, medium - sized, and large - sized materials, calculate the average weight for each specification respectively.

[0063] Step S002: Transport multiple materials to multiple preliminary material placement devices 400 so that each preliminary material placement device 400 contains a single material.

[0064] Step S003: The container is transported by the empty container feeding conveying line 100 to the weighing conveying line 200. The first weighing module is reset to zero, and then other components of the cartoning machine supply containers to the empty container feeding conveying line 100.

[0065] Step S004: The materials are transported into the containers on the weighing conveying line 200, and the first weighing module starts to accumulate the weight. Set the target weight as T0, the target weight T0 is set according to requirements, the accumulated weight is T1, and ΔT = T0 - T1.

[0066] Step S005: When ΔT < G, the weighing conveying line 200 transports the container filled with materials to the weight compensation conveying line 300.

[0067] Step S006: The weight compensation control module combines the weights of the materials in the preliminary material placement devices 400 individually or in groups of two. The weight compensation control module selects the weight combination closest to ΔT from multiple combinations, and the weight compensation control module controls the weight compensation handling device 500 to pick up the materials of the corresponding weight combination.

[0068] Step S007: The weight compensation handling device 500 transports the picked - up materials into the containers on the weight compensation conveying line 300 to complete the weight compensation step.

[0069] Then, steps S002 to S007 are repeatedly executed.

[0070] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. Material quantitative weighing component, characterized by: There is a first direction, including: A weighing conveying line, wherein the weighing conveying line is provided with a first weighing module; A reweighting conveyor line, wherein the weighing conveyor line and the reweighting conveyor line are arranged along a first direction, the reweighting conveyor line is butted against an end of the weighing conveyor line, and the conveying directions of the reweighting conveyor line and the weighing conveyor line are both parallel to the first direction; A preparation material placement device, the preparation material placement device is arranged beside the replenishing weight conveying line, and the preparation material placement device is provided with a plurality of preparation material placement devices; the preparation material placement device is provided with a second weighing module, and the preparation material placement device is used to support and weigh a single material; A re-weight transport device, which is used to transport the materials of the preparation material placement device to the container on the re-weight conveying line; The re-weighting control module, the first weighing module, the second weighing module and the re-weighting transport device are all connected to the re-weighting control module by signal; the re-weighting control module controls the re-weighting transport device so that the re-weighting transport device selectively transports materials in several of the preparatory material placement devices to the containers on the re-weighting conveying line.

2. The material quantitative weighing component according to claim 1, characterized in that: There are at least two weight-replenishing transport devices.

3. The material quantitative weighing component according to claim 1, characterized in that: The weight-replenishing transport device comprises: Weight-replenishing suction cup structure; a first supplementary weight driving member, wherein the first supplementary weight driving member drives the supplementary weight suction cup structure to move along the first direction; a second weight-adding driving member, the second weight-adding driving member driving the weight-adding suction cup structure to move up and down; A third weight-adding driving member drives the weight-adding suction cup structure to move back and forth between the preparatory material placement device and the weight-adding conveying line.

4. The material quantitative weighing component according to claim 3, characterized in that: The second supplementary weight driving component and the third supplementary weight driving component are both pneumatic linear driving devices.

5. The material quantitative weighing component according to claim 3, characterized in that: The weight-adding suction cup structure is a vacuum suction cup.

6. The material quantitative weighing component according to claim 1, characterized in that: There are six prepared material placement devices, and the plurality of prepared material placement devices are arranged along the first direction.

7. The material quantitative weighing component according to claim 1, characterized in that: The reweighting conveyor line and the weighing conveyor line operate independently.

8. The material quantitative weighing component according to claim 7, characterized in that: It also includes an empty container feeding conveyor line, the end of which is connected to the weighing conveyor line, and the reweighting conveyor line, the weighing conveyor line and the empty container feeding conveyor line operate independently.

9. A material quantitative weighing method, characterized in that: Using the material quantitative weighing component according to any one of claims 1 to 8, the material quantitative weighing method comprises: Take multiple materials of the same specification, weigh them and find the average weight W, set the G value, G is M times W, the value of M is between N and N+1, N is a positive integer and at least 1; Transport multiple materials to multiple preparatory material placement devices to ensure that each preparatory material placement device has a single material; The empty container is transported to the weighing conveying line, and the first weighing module of the weighing conveying line is reset to zero; The material is transported to the container of the weighing conveyor line, and the first weighing module accumulates the weight. Let the target weight be T0, the accumulated weight be T1, and ΔT = T0-T1; After ΔT < G, the weighing conveyor transports the container filled with materials to the weight compensation conveyor; the weight compensation control module performs weight combination on the materials of multiple preliminary material placement devices, selects the weight combination closest to ΔT, and the weight compensation control module controls the weight compensation handling device to pick up the materials corresponding to the selected weight combination; The weight compensation handling device transports the picked-up materials into the container on the weight compensation conveyor.

10. The material quantitative weighing method according to claim 9, characterized in that: Let N be set to 1.

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