Continuous desiccant dosing device and method

Abstract

The present invention discloses a continuous desiccant delivery device and method, wherein a bottle conveying axis is set as a virtual spindle, and a bag pulling axis, a cutter axis, and a feeding axis are associated with the virtual spindle, and the device also includes the following steps: S1: when the bottle conveying axis rotates to a predetermined angle, the bag pulling axis pulls the desiccant down to a first predetermined length; S2: the bottle conveying axis returns to the origin and runs, and a cycle begins; S3: the bag pulling axis pulls the desiccant down to a second predetermined length, and the feeding axis clamps the desiccant according to the first set position of the virtual spindle, and completes the positioning of the desiccant to be cut; S4: the container detection device detects the container, and the cutter axis cuts the desiccant according to the second set position of the virtual spindle; S5: the feeding axis puts the desiccant into the container according to the third set position of the virtual spindle, and then goes to step S1. Compared with the prior art, the present invention associates the bag pulling axis, the cutter axis, and the feeding axis with the virtual spindle, realizes continuous desiccant delivery, has a fast running speed, and greatly improves production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of desiccant feeding, and in particular to a continuous desiccant feeding device and method. Background Art

[0002] Nowadays, when processing products, it is often necessary to put desiccant into the packaging bags of the products to prevent the products from getting damp. The input of desiccant is an important process often involved in the pharmaceutical and health care product packaging machinery industry, and desiccant input machines are often used. For example, the patent with the publication number CN209064502U discloses a new type of single-head high-speed desiccant input machine, including a storage and discharge mechanism, a desiccant slide mechanism, a cutting and empty bag detection device, a synchronous feeding device, a cutting mechanism, a lower brush device, a feeding nozzle, a touch screen, a front and rear adjustment device, a mounting box, a lifting device, a chassis, a conveyor belt, a desiccant input machine body, an L-shaped swing rod and a mounting frame, wherein the double-sided lower brush wheels of the lower brush device automatically and quickly open before the desiccant enters, and the desiccant is quickly clamped after entering and tightened at the same or slightly faster speed as the synchronous feeding device, and the cutting mechanism cooperates with the shearing of the desiccant. When the bottle below is not in place, the sheared desiccant can be clamped and the bottle can be in place before brushing the desiccant into the medicine bottle. It needs to wait until the bottle is in place before brushing the desiccant into the bottle, that is, when the desiccant is put in, the bottle needs to wait, which affects the efficiency of the desiccant input. Summary of the invention

[0003] The invention provides a continuous desiccant feeding device and method, which are used to solve the problem in the prior art that the desiccant cannot be continuously fed into a moving bottle.

[0004] The present invention provides a continuous desiccant delivery method, comprising a control device, a bottle conveying shaft, a bag pulling shaft, a cutter shaft, a feeding shaft, a color mark detection device and a container detection device, wherein the bottle conveying shaft is set as a virtual main shaft, and the bag pulling shaft, the cutter shaft, the feeding shaft and the virtual main shaft form an associated relationship. The continuous desiccant delivery method also includes the following steps:

[0005] S1: When the bottle conveying shaft rotates to a predetermined angle, the bag pulling shaft pulls the desiccant down to a first predetermined length;

[0006] S2: the bottle conveying axis returns to the origin and runs, starting a cycle;

[0007] S3: the color mark detection device detects the desiccant color mark, the bag pulling shaft pulls the desiccant down to a second predetermined length according to its current position, and the feeding shaft clamps the desiccant according to the first set position of the virtual main shaft, completing the positioning of the desiccant to be cut;

[0008] S4: the container detection device detects the container, and the cutter shaft cuts the desiccant according to the second set position of the virtual main axis;

[0009] S5: After the desiccant is cut, the feeding axis puts the desiccant into the container according to the third set position of the virtual spindle, and then goes to step S1.

[0010] Preferably, a clamping mechanism is provided between the bag pulling shaft and the feeding shaft, and the clamping mechanism clamps the desiccant to be cut when the cutter shaft cuts the desiccant, and when the clamping mechanism clamps the desiccant to be cut, the feeding shaft clamps the desiccant to be cut.

[0011] Preferably, the rotation speed of the feeding shaft when clamping the desiccant for feeding is greater than the rotation speed when no desiccant is fed.

[0012] Preferably, the cycle in which the container is transported to the feeding port is set as the current cycle, and the bag pulling shaft pulls the desiccant in the cycle before the current cycle.

[0013] Preferably, the cutter shaft cuts the desiccant in the current cycle.

[0014] Preferably, the container detection device is used to detect containers in a cycle preceding the current cycle.

[0015] Preferably, after the bag pulling shaft has been pulled down to a first predetermined length and the color mark detection device has not detected the desiccant color mark, the bottle conveying shaft stops running.

[0016] Preferably, the cutter shaft switches to a waiting state after completing the cutting of the desiccant, and does not restart the cutting of the desiccant until the virtual spindle reaches the second set position.

[0017] Preferably, the control device acquires the position of the bag pulling axis in the following method: when the color mark detection device detects the desiccant color mark, the control device acquires the position of the virtual main axis, and then acquires the position of the bag pulling axis through the position of the virtual main axis.

[0018] Preferably, it comprises a continuous desiccant dispensing device, which comprises a desiccant in a strip shape and a bag-pulling mechanism connected to the desiccant, a color mark detection device, a bag-cutting mechanism, a feeding mechanism and a bottle-conveying mechanism are arranged in order from top to bottom below the bag-pulling mechanism, the bag-pulling mechanism and the color mark detection device cooperate to pull a predetermined length of desiccant, the bottle-conveying mechanism is provided with a container detection device, and the bag-cutting mechanism cuts the desiccant after the container detection device detects the container; the feeding mechanism is used to put the cut desiccant into a moving container, and the bag-pulling mechanism, the bag-cutting mechanism, the feeding mechanism and the bottle-conveying mechanism are respectively provided with servo motors.

[0019] Compared with the prior art, the present invention sets the first set position, the second set position and the third set position on the virtual spindle, so that the time node of the feeding shaft clamping the desiccant, the time node of the cutting knife shaft cutting the bag and the time node of the feeding shaft feeding are all determined by the position of the bottle conveying shaft; in terms of pulling the desiccant, the bag pulling timing of the bag pulling shaft is controlled by the rotation angle of the bottle conveying shaft, and the running track of the bottle conveying shaft is fixed, so that the desiccant can be continuously put into the moving bottle. Secondly, the relative pull-down and the absolute pull-down are coordinated to ensure the continuous pull-down of the desiccant, and at the same time, the (accumulated position) error when the desiccant is pulled down can be effectively eliminated to avoid affecting the cutting of the desiccant by the subsequent cutting knife shaft, thereby providing a guarantee for the continuous input of the desiccant. The present invention associates the bag pulling shaft, the cutting knife shaft and the feeding shaft on the virtual spindle, realizes continuous desiccant input, and has a fast running speed, which greatly improves the production efficiency. The use of the virtual spindle simplifies the mechanical structure design to a certain extent and saves the mechanical structure cost; when matching desiccants of different specifications, it can usually be achieved by adjusting the parameters of the virtual spindle. Compared with adjusting the mechanical structure, this adjustment method is simpler and faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 The workflow of the present invention Figure 1 ;

[0022] Figure 2 It is a structural schematic diagram of the present invention;

[0023] Figure 3 The workflow of the present invention Figure 2 ;

[0024] Figure 4 It is a schematic diagram of the structure of each step cycle of the present invention.

[0025] Reference numerals:

[0026] 1. Bag pulling shaft, 2. Cutter shaft, 3. Feeding shaft, 4. Bottle conveying shaft, 5. Color mark detection device, 6. Clamping mechanism. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See attached Figure 1-2 The present embodiment provides a continuous desiccant feeding method, comprising a control device, a bottle conveying shaft 4, a bag pulling shaft 1, a cutter shaft 2, a feeding shaft 3, a color mark detection device 5 and a container detection device, wherein the bottle conveying shaft 4 is set as a virtual main shaft, the bag pulling shaft 1, the cutter shaft 2, and the feeding shaft 3 form an associated relationship with the virtual main shaft, and the bottle conveying shaft 4 rotates to start continuously conveying bottles to the feeding port, and the continuous desiccant feeding method further comprises the following steps:

[0029] S1: When the bottle conveying shaft 4 rotates to a predetermined angle, the bag pulling shaft 1 pulls the desiccant down to a first predetermined length. The bottle conveying shaft 4 is driven by a servo motor, and the rotation angle of the bottle conveying shaft 4 can be obtained by the servo motor;

[0030] S2: the bottle conveying shaft 4 returns to the origin and runs, starting a cycle. In one cycle, the bottle conveying shaft 4 conveys one bottle to the feeding port;

[0031] S3: The color mark detection device 5 detects the desiccant color mark, and the bag pulling shaft 1 pulls down the desiccant to a second predetermined length according to its current position. The bag pulling shaft 1 pulling down the first predetermined length is a relative pull-down, and the bag pulling shaft 1 will not wait until the desiccant is pulled down to the first predetermined length before pulling down the second predetermined length. The bag pulling shaft 1 pulling down the second predetermined length is an absolute pull-down, which is determined by the position of the bag pulling shaft 1 when the color mark detection device 5 detects the desiccant color mark and then pulls down the second predetermined length. Among them, the relative pull-down of the first predetermined length is to be able to detect the desiccant color mark. The relative pull-down and the absolute pull-down cooperate to ensure that the desiccant is pulled down continuously while eliminating the (accumulated position) error when the desiccant is pulled down, so as to prevent affecting the timing of cutting the bag by the cutter shaft 2. The feeding shaft 3 clamps the desiccant according to the first set position of the virtual spindle to complete the positioning of the desiccant to be cut;

[0032] S4: The container detection device detects the container, indicating that a container is transported to the feeding port, and the cutter shaft 2 cuts the desiccant according to the second set position of the virtual spindle; the second set position of the virtual spindle can be the position of the bottle conveying shaft 4 when the container detection device detects the container, or it can be the position of the bottle conveying shaft 4 at a certain time point after the container detection device detects the container.

[0033] S5: After the desiccant is cut, the feeding axis 3 feeds the desiccant into the container according to the third set position of the virtual main axis; then go to step S1.

[0034] Among them, the step of the feeding shaft 3 clamping the desiccant is as follows: a clamping mechanism 6 is provided between the bag pulling shaft 1 and the feeding shaft 3, and the clamping mechanism 6 clamps the desiccant to be cut when the cutter shaft 2 cuts the desiccant, and when the clamping mechanism 6 clamps the desiccant to be cut, the feeding shaft 3 clamps the desiccant to be cut, that is, when the cutter is about to cut the desiccant, the clamping mechanism 6 will quickly clamp the desiccant, reducing the time for the clamping mechanism 6 to clamp the desiccant, and avoiding the desiccant being worn by the running feeding shaft 3. After cutting off the desiccant, the clamping mechanism 6 releases the cut desiccant, and the feeding shaft 3 conveys the desiccant downward, and the desiccant is put into the moving container. By setting the clamping mechanism 6, it is ensured that the desiccant will not shake when cutting the bag, and the error generated when cutting the bag is reduced.

[0035] Specifically, the clamping mechanism 6 is driven by a cylinder.

[0036] As another embodiment of the present invention: the rotation speed of the feeding shaft 3 when clamping the desiccant is greater than the rotation speed when not feeding, that is, the feeding shaft 3 rotates at a high speed when feeding, and rotates at a low speed when not feeding. This setting can reduce energy consumption and reduce desiccant wear when the desiccant is to be cut and positioned.

[0037] See attached Figure 4 , the cycle in which the container is transported to the feeding port is set as the current cycle, the bag pulling axis 1 pulls the desiccant in the cycle before the current cycle, that is, the bag pulling axis 1 will pull down the desiccant one cycle in advance, and the cutter axis 2 cuts the desiccant in the current cycle. The container detection device is used to detect the containers in the cycle before the current cycle. Of course, it can be understood that the container detection device can also check whether there is a container transported to the feeding port by detecting the containers in the current cycle.

[0038] Among them, when the bag pulling shaft 1 is pulled down to the first predetermined length, the color mark detection device 5 does not detect the desiccant color mark, and the bottle conveying shaft 4 stops running. Since the bag pulling shaft 1, the cutter shaft 2 and the feeding shaft 3 are associated with the bottle conveying shaft 4, the bag pulling shaft 1, the cutter shaft 2 and the feeding shaft 3 will also stop together with the bottle conveying shaft 4.

[0039] After the cutter shaft 2 has finished cutting the desiccant, it switches to a waiting state and does not work at this time, and does not restart cutting the desiccant until the virtual spindle reaches the second set position.

[0040] The method for the control device to obtain the position of the bag pulling axis 1 is as follows: when the color mark detection device 5 detects the desiccant color mark, the control device obtains the position of the virtual main axis, and then obtains the position of the bag pulling axis 1 through the position of the virtual main axis.

[0041] Specifically, the first predetermined length is equal to or greater than the length of the desiccant to be cut, and the container is a bottle.

[0042] See attached Figure 3 First, let the bottle conveying axis 4, the cutter axis 2 and the feeding axis 3 return to the cycle origin respectively, and then associate the feeding axis 3 with the bottle conveying axis 4 (through the virtual main axis). The feeding axis 3 runs in a cycle with the bottle conveying axis 4. When the bottle conveying axis 4 rotates to a predetermined angle, the bag pulling axis 1 pulls the desiccant down to the first predetermined length. During the pull-down process, the desiccant color mark is detected. At this time, the position of the bag pulling axis 1 is read, and the desiccant is pulled down to the second predetermined length according to the current position of the bag pulling axis 1 (at this time, the bag pulling axis 1 stops pulling down the first predetermined length instruction), and the positioning of the desiccant is completed. While the bag pulling axis 1 pulls down the desiccant, the container detection device starts to detect whether there is a bottle on the workstation. When there is no bottle, the cutter axis 2 waits at the origin position. When a bottle is detected (the desiccant has been positioned), the cutter axis 2 starts and runs in a cycle with the bottle conveying axis 4 to start cutting the desiccant. Then the cut desiccant is put into the moving bottle by the feeding axis 3. After the cutter shaft 2 has cut the desiccant, the bottle conveying shaft 4 rotates to a predetermined angle and starts to trigger the bag pulling shaft 1 to pull down the desiccant, and the next round of desiccant feeding begins.

[0043] If the desiccant color mark is still not found after the bag pulling shaft 1 has pulled down the first predetermined length of desiccant, it indicates that the mark search has failed, and the bottle conveying shaft 4 immediately stops running and sounds an alarm.

[0044] The present invention also provides a continuous desiccant delivery device, including a strip-shaped desiccant and a bag-pulling mechanism connected to the desiccant, wherein a bag-pulling shaft 1 is provided in the bag-pulling mechanism, and a color mark detection device 5, a bag-cutting mechanism, a feeding mechanism and a bottle-transporting mechanism are provided below the bag-pulling mechanism from top to bottom in sequence, wherein the bag-cutting mechanism, the feeding mechanism and the bottle-transporting mechanism are provided with a cutter shaft 2, a feeding shaft 3 and a bottle-transporting shaft 4 respectively, and the bag-pulling mechanism and the color mark detection device 5 cooperate to pull a predetermined length of desiccant, and a container detection device is provided at the bottle-transporting mechanism, and the bag-cutting mechanism cuts the desiccant after the container detection device detects the container, and specifically, when the bottle-transporting shaft 4 runs to a first preset position, the bag-cutting mechanism starts to cut the desiccant. The feeding mechanism is used to put the cut desiccant into a moving container, and specifically, when the bottle-transporting shaft 4 runs to a second preset position, the feeding mechanism starts to put the desiccant into the container. The bag pulling mechanism, bag cutting mechanism, material feeding mechanism and bottle conveying mechanism are respectively provided with servo motors, and the servo motors respectively control the operation of the bag pulling axis 1, the cutter axis 2, the material feeding axis 3 and the bottle conveying axis 4.

[0045] Specifically, the delivery device also includes a roll feeding device, which is used to buffer a section of desiccant to facilitate the bag pulling mechanism to quickly pull out the desiccant.

[0046] The present invention sets a first set position, a second set position and a third set position on the virtual spindle, so that the time node of the feeding shaft 3 clamping the desiccant, the time node of the cutting knife shaft 2 cutting the bag and the time node of the feeding shaft 3 feeding are all determined by the position of the bottle conveying shaft 4; in terms of pulling the desiccant, the bag pulling timing of the bag pulling shaft 1 is controlled by the rotation angle of the bottle conveying shaft 4, and the running track of the bottle conveying shaft 4 is fixed, so that the desiccant can be continuously put into the moving bottle. Secondly, the relative pull-down and the absolute pull-down are coordinated to ensure the continuous pull-down of the desiccant, and the (accumulated position) error when the desiccant is pulled down can be effectively eliminated to avoid affecting the cutting of the desiccant by the subsequent cutting knife shaft 2, thereby providing a guarantee for the continuous input of the desiccant. The present invention associates the bag pulling shaft 1, the cutting knife shaft 2 and the feeding shaft 3 on the virtual spindle, realizes continuous desiccant input, and has a fast running speed, which greatly improves the production efficiency. The use of the virtual spindle simplifies the mechanical structure design to a certain extent and saves the mechanical structure cost; when matching desiccants of different specifications, it can usually be achieved by adjusting the parameters of the virtual spindle. Compared with adjusting the mechanical structure, this adjustment method is simpler and faster.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A continuous desiccant delivery method, characterized in that: The method comprises a control device, a bottle conveying shaft (4), a bag pulling shaft (1), a cutter shaft (2), a feeding shaft (3), a color mark detection device (5) and a container detection device, wherein the bottle conveying shaft (4) is set as a virtual main shaft, and the bag pulling shaft (1), the cutter shaft (2) and the feeding shaft (3) form an associated relationship with the virtual main shaft. The method further comprises the following steps: S1: When the bottle conveying shaft (4) rotates to a predetermined angle, the bag pulling shaft (1) pulls the desiccant down to a first predetermined length; S2: the bottle conveying shaft (4) returns to the origin and starts running, starting a cycle; S3: the color mark detection device (5) detects the desiccant color mark, the bag pulling shaft (1) pulls the desiccant down to a second predetermined length according to its current position, and the feeding shaft (3) clamps the desiccant according to the first set position of the virtual main shaft, thereby completing the positioning of the desiccant to be cut; S4: the container detection device detects the container, and the cutter shaft (2) cuts the desiccant according to the second set position of the virtual main shaft; S5: After the desiccant is cut, the feeding shaft (3) feeds the desiccant into the container according to the third set position of the virtual main shaft, and then goes to step S1.

2. The continuous desiccant dosing method according to claim 1, characterized in that: A clamping mechanism (6) is provided between the bag pulling shaft (1) and the feeding shaft (3), and the clamping mechanism (6) clamps the desiccant to be cut when the cutter shaft (2) cuts the desiccant. When the clamping mechanism (6) clamps the desiccant to be cut, the feeding shaft (3) clamps the desiccant to be cut.

3. The continuous desiccant delivery method according to claim 2, characterized in that: The rotation speed of the feeding shaft (3) when clamping the desiccant for feeding is greater than the rotation speed when no desiccant is fed.

4. The continuous desiccant dosing method according to claim 1, characterized in that: The cycle in which the container is transported to the feeding port is set as the current cycle, and the bag pulling shaft (1) pulls the desiccant in the cycle before the current cycle.

5. The continuous desiccant dosing method according to claim 4, characterized in that: The cutter shaft (2) cuts the desiccant in the current cycle.

6. The continuous desiccant dosing method according to claim 5, characterized in that: The container detection device is used to detect containers in a cycle preceding a current cycle.

7. The continuous desiccant dosing method according to claim 1, characterized in that: When the bag pulling shaft (1) has been pulled down to a first predetermined length and the color mark detection device (5) has not detected the desiccant color mark, the bottle conveying shaft (4) stops running.

8. The continuous desiccant dosing method according to claim 1, characterized in that: After the cutter shaft (2) has completed cutting the desiccant, it switches to a waiting state and does not restart cutting the desiccant until the virtual spindle reaches a second set position.

9. The continuous desiccant dosing method according to claim 1, characterized in that: The method for the control device to obtain the position of the bag pulling shaft (1) is as follows: when the color mark detection device detects the desiccant color mark, the control device obtains the position of the virtual main shaft, and then obtains the position of the bag pulling shaft (1) through the position of the virtual main shaft.

10. The continuous desiccant dosing method according to claim 1, characterized in that: The invention comprises a continuous desiccant dispensing device, the continuous desiccant dispensing device comprises a strip-shaped desiccant and a bag-pulling mechanism connected to the desiccant, a color mark detection device (5), a bag-cutting mechanism, a feeding mechanism and a bottle-conveying mechanism are arranged in order from top to bottom below the bag-pulling mechanism, the bag-pulling mechanism and the color mark detection device (5) are used to pull a predetermined length of desiccant in cooperation, the bottle-conveying mechanism is provided with a container detection device, the bag-cutting mechanism cuts the desiccant after the container detection device detects the container; the feeding mechanism is used to put the cut desiccant into a moving container, and the bag-pulling mechanism, the bag-cutting mechanism, the feeding mechanism and the bottle-conveying mechanism are respectively provided with servo motors.

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