A new high-speed electronic variable speed device

Abstract

The application relates to the field of sanitary product production equipment, in particular to a novel high-speed electronic variable-speed device which comprises a rack, a main transmission shaft arranged on the rack, a main servo motor and a speed reducer connected to the main transmission shaft and used for driving the rotation of the main transmission shaft, a plurality of swing arm assemblies rotatably installed on the main transmission shaft and used as the center of the swing arm assemblies, a suction box arranged at the end of each swing arm assembly, a plurality of swing arm servo motors connected to each swing arm assembly and used for driving the rotation of the swing arm assembly, and a planetary reducer assembly matched with the swing arm servo motor and having a sun gear input end, an outer gear ring input end and a planetary carrier output end, and the swing arm servo motor is in transmission connection with the sun gear input end. The application solves the problem of poor universality of the variable-speed structure in the existing suction transmission device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sanitary product production equipment, in particular to a novel high-speed electronic variable speed device. BACKGROUND

[0002] In the production process of sanitary products, the form of assembly line processing is adopted, and when the layers of the sanitary products are combined, there are usually position requirements. This process requires the transmission of sheet-shaped and soft materials or composite materials, and the transmission of single-piece materials between workstations. The basic structure of the existing equipment applied to this place is disclosed in Chinese Patent CN 209922509 U, which discloses a sheet material adsorption and transfer device, including a fixed seat, a rotating disc and an adsorption disc assembly. The rotating disc is rotatably installed on the fixed seat, the fixed seat is provided with a negative pressure cavity, the rotating disc is provided with a first interface and a second interface for communicating with the negative pressure cavity, the adsorption disc assembly can rotate synchronously with the rotating disc, the adsorption disc assembly has a first adsorption area and a second adsorption area, the first adsorption area is connected with the negative pressure cavity through the first interface, the second adsorption area is connected with the negative pressure cavity through the second interface, and a baffle is further arranged between the negative pressure cavity and the rotating disc. With the rotation of the rotating disc, the baffle is used to block the first interface and / or the second interface. And the structure of the adsorption disc assembly for contacting with the sheet material and its principle are disclosed accordingly.

[0003] At present, in order to meet the production needs, especially the different position requirements of semi-finished products on the sheet material, i.e. the required sheet material between two single products needs to form a certain distance after transmission, and the traditional method is to use multiple adsorption conveying devices to meet this demand. Or as shown in Chinese Patent Application CN 103057986 A, a variable-distance sheet-shaped soft body adsorption conveying method and device are proposed. The structure of the device is as follows: a frame body and a female wheel are provided, the female wheel is rotatably arranged on the frame body through a rotating shaft, a plurality of negative pressure boxes are arranged on the female wheel, the tail parts of the negative pressure boxes are hingedly connected with the female wheel, a plurality of connecting rods are hingedly connected with the female wheel, each connecting rod is hingedly connected with a corresponding negative pressure box at one end and is arranged in a common ring-closed guide groove at the other end, the maximum distance L and the minimum distance d of the ring-closed guide groove to the axis of the female wheel are L>d, and the ring-closed guide groove is a smooth ring-closed curved guide groove. The frame body of the above-mentioned sheet-shaped soft body adsorption conveying device is provided with an adjusting wheel, the common ring-closed guide groove is arranged on the side end face of the adjusting wheel, the one end of the connecting rod is provided with a roller, and the roller is arranged in the ring-closed guide groove. The ring-closed guide groove of the above-mentioned sheet-shaped soft body adsorption conveying device is a circular ring-shaped guide groove, and the circular ring-shaped guide groove is arranged eccentrically relative to the female wheel.

[0004] The technical solution is to adjust the distance change through the ring-closed guide groove on the adjusting wheel.

[0005] However, this structure has some drawbacks: first, its precision requirements for mechanical equipment are very high, and the design is complex, and the installation and maintenance are inconvenient; second, this equipment can only be used for one product, and if the number is changed or the product is changed, the structure often needs to be redesigned; finally, the cost of specially designed parts is relatively high, resulting in high equipment maintenance costs, and the parts are easily damaged. SUMMARY

[0006] Therefore, the present application provides a new type of high-speed electronic variable speed device, which solves the problem of poor universality of the existing adsorption transmission device.

[0007] To achieve the above purpose, the present application is realized by the following technical scheme:

[0008] A new type of high-speed electronic variable speed device, comprising a rack, the rack is provided with a main transmission shaft, the main transmission shaft is connected with a main servo motor and a speed reducer for driving the rotation thereof; a plurality of swing arm assemblies are rotatably installed on the main transmission shaft and centered on the main transmission shaft, the end of each swing arm assembly is provided with an adsorption box; a plurality of swing arm servo motors and a matching planetary reducer assembly are connected to each swing arm assembly for driving the rotation thereof, the planetary reducer assembly has a sun gear input end, an outer ring gear input end, and a planet carrier output end, and the swing arm servo motor is in transmission connection with the sun gear input end;

[0009] The main servo motor and the speed reducer are in transmission connection with the outer ring gear input end;

[0010] Each planet carrier output end is in transmission connection with each swing arm assembly and drives the rotation of each swing arm assembly along the main transmission shaft;

[0011] The main servo motor rotates at a constant speed, and each swing arm is driven by the outer ring gear input end to have a base speed V1;

[0012] Each swing arm servo motor is in reciprocating variable speed motion, and the motion law of each swing arm servo motor is the same, the speed of each swing arm servo motor is V2, and when the swing arm servo motor rotates in the same direction as the base speed V1, the speed is positive, and when the swing arm servo motor rotates in the opposite direction, the speed is negative, and the speed V of each swing arm is the sum of V1 and V2;

[0013] The rack is provided with a receiving position a for receiving a sheet material on a flow line, and a transfer position b for outputting the sheet material, the receiving position a and the transfer position b are spaced apart by a variable speed phase angle a with the main transmission shaft as the center, when the swing arm assembly is located at the receiving position a, the speed V2 is zero.

[0014] Preferably, the number of swing arm assemblies is defined as n, the time for a single swing arm assembly to rotate one revolution is T, and adjacent swing arm assemblies are started with a interval of T / n.

[0015] Preferably, each of the swing arm assemblies is installed at an equal interval around the main transmission shaft.

[0016] Preferably, a branch transmission shaft is installed around the main transmission shaft, and each of the swing arm assemblies is rotatably installed on the main transmission shaft through the branch transmission shaft.

[0017] Preferably, a gear assembly is used to drive between the reducer, the input end of the outer gear ring, each of the planet carrier output ends and each of the swing arm assemblies.

[0018] Preferably, a plurality of suction boxes are installed at the end positions of each of the swing arm assemblies.

[0019] Preferably, the variable speed phase angle a is 120 degrees.

[0020] Preferably, the variable speed phase angle a is 180 degrees.

[0021] Preferably, the number of swing arm assemblies is 3-12.

[0022] By adopting the foregoing technical solutions, the present application has the following advantages:

[0023] The planetary reducer assembly is used as the main speed regulating component, each swing arm assembly obtains a uniform base speed through the input end of the outer gear ring of the planetary reducer assembly, and then each swing arm assembly is connected with a swing arm servo motor for variable speed to change the phase and speed, thereby realizing the speed adjustment of each swing arm assembly, so that the suction boxes can take the product at an appropriate speed at the taking position a, can quickly adapt to the transmission speed of the production line to take the material, and can stably deliver the material by using the suction boxes; after the swing arm assembly continues to move, different speeds can be obtained at the transfer position b, thereby obtaining different product spacings after the sheet material is transferred, and the function of variable distance transfer is realized.

[0024] Under this structure, the speed of the existing production line can be simply matched, and the product production speed can be effectively improved.

[0025] Moreover, all different products can be adapted without the need to redesign the mechanism, and the running parameters of the main servo motor and the swing arm servo motor only need to be changed to change the distance, which greatly reduces the equipment investment of multi-product manufacturers and reduces the initial cost.

[0026] At the same time, in the case of the fixed angle of the existing production line equipment, the variable speed phase angle a is also different according to the different positions of the taking position a and the transfer position b, and the running parameters of the main servo motor and the swing arm servo motor can also be adjusted to realize the variable distance, which greatly improves the universality of the equipment.

[0027] The device adopts servo motor transmission, is stable and reliable, is not easy to be damaged, has long service life, low energy consumption, 50% higher running speed than previous devices, 10% energy consumption than previous devices, can be applied to all specifications of products, has simple structure, long service life and convenient maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a whole structure schematic view of the embodiment of the present application;

[0029] Figure 2 It is a structure schematic view of the inside of the planetary reducer assembly in the embodiment of the present application;

[0030] Figure 3 It is a structure schematic view of the inside of the planetary reducer assembly in another view of the embodiment of the present application;

[0031] Figure 4 It is a position change schematic view of the operation of each swing arm assembly (only showing the suction box) in the embodiment of the present application;

[0032] Figure 5 It is a product spacing change schematic view in the embodiment of the present application;

[0033] Figure 6 It is a speed change schematic view of a single swing arm in the embodiment of the present application.

[0034] The drawings show that: 1, swing arm servo motor; 2, main servo motor; 21, speed reducer; 3, planetary reducer assembly; 3A, sun gear input end; 3B, outer gear ring input end; 3C, planetary carrier output end; 4, gear assembly; 5, branch transmission shaft; 6, swing arm assembly; 7, main transmission shaft; 8, suction box. DETAILED DESCRIPTION

[0035] The embodiment of the present application will be described in detail below in combination with specific examples, so that the realization process of how to apply technical means to solve technical problems and achieve technical effects can be fully understood and implemented.

[0036] REFERENCE Figures 1 to 6 A novel high-speed electronic variable speed device, comprising a rack, a main transmission shaft 7 arranged on the rack, a main servo motor 2 and a speed reducer 21 connected to the main transmission shaft 7 to drive the rotation of the main transmission shaft 7, eight swing arm assemblies 6 rotatably installed on the main transmission shaft 7 and taking the main transmission shaft 7 as the center, a suction box 8 installed at the end of each swing arm assembly 6, a plurality of swing arm servo motors 1 and a matching planetary reducer assembly 3 connected to each swing arm assembly 6 to drive the rotation of the swing arm assembly 6, the planetary reducer assembly 3 having a sun gear input end 3A, an outer gear ring input end 3B and a planetary carrier output end 3C at the center, and the swing arm servo motor 1 being in transmission connection with the sun gear input end 3A.

[0037] The main servo motor 2 and the reducer 21 are in transmission connection with the outer ring gear input end 3B;

[0038] Each of the planet carrier output ends 3C is in transmission connection with each of the swing arm assemblies 6 and drives it to rotate along the main transmission shaft 7;

[0039] The main servo motor 2 rotates at a constant speed, and drives each of the swing arms through the outer ring gear input end 3B, so that each of the swing arms has a basic speed V1;

[0040] Each of the swing arm servo motors 1 is reciprocating variable speed motion, and the motion law of each of the swing arm servo motors 1 is the same, and the speed is V2, which is defined as positive when it rotates in the same direction as the basic speed V1, and negative when it rotates in the opposite direction, and the speed V of each of the swing arms is the sum of V1 and V2;

[0041] The rack is provided with a receiving position a for receiving a sheet on a production line, and a transfer position b for outputting the sheet, and the receiving position a and the transfer position b are spaced apart by a variable speed phase angle a with the main transmission shaft 7 as the center, when the swing arm assembly 6 is located at the receiving position a, the speed V2 is zero, and at this position, V2 is zero, that is, the swing arm servo motor 1 changes direction; for example, in order to obtain the product spacing change as shown in Figure 5 The product spacing u of the receiving position a is greater than the product spacing w of the transfer position b, so the speed of the swing arm assembly 6 at the receiving position a needs to be less than the speed at the transfer position b, so when the swing arm assembly 6 is in the variable speed phase angle a, the swing arm servo motor 1 needs to rotate in the same direction as the main servo motor 2 (or provide power in the same direction for the swing arm assembly 6), and at this time, the swing arm assembly 6 can be accelerated, and the speed at the transfer position b is greater than that at the receiving position a, and thus the product spacing change as shown in Figure 5 is obtained; on the contrary, when the swing arm assembly 6 is located outside the variable speed phase angle a, the swing arm servo motor 1 rotates in the opposite direction of the main servo motor 2, so as to achieve the speed reduction effect; generally, the value of the basic speed V1 is the sheet conveying speed value at the receiving position a, that is, the conveying speed value of the production line at this position.

[0042] On the contrary, when the product spacing of the transfer position b needs to be greater than that of the receiving position a, the swing of the swing arm servo motor 1 is changed accordingly, and the principle is as described above, which will not be described in detail here.

[0043] It should be noted that the variable speed phase angle a can have various angles, as long as the acceleration and deceleration travel space of the swing arm assembly 6 is met, and the variable speed phase angle a shown here is 120 degrees or 180 degrees commonly set for the production line.

[0044] The planetary reducer assembly 3 is adopted as the main speed regulating component, the swing arm assembly 6 obtains a uniform base speed through the outer gear ring input end 3B of the planetary reducer assembly 3, each swing arm assembly 6 is connected with the swing arm servo motor 1 for speed change to change the phase and speed, and then the speed of each swing arm assembly 6 is adjusted, the suction box 8 takes the product at the taking position a at a suitable speed, the transmission speed of the production line can be quickly adapted to take the material, and the suction box 8 is used for stable transmission; after the swing arm assembly 6 continues to move, different speeds can be obtained at the transfer position b, and then different product spacings are obtained after the sheet transfer, and the function of variable-distance transfer is realized.

[0045] Under this structure, the speed of the existing production line can be simply matched, and the product production speed is effectively improved.

[0046] Moreover, all different products can be adapted without the need of redesigning the mechanism, and the running parameters of the main servo motor 2 and the swing arm servo motor 1 only need to be changed to change the distance, which greatly reduces the equipment investment of multi-product manufacturers and the initial cost.

[0047] Meanwhile, in the case that the existing production line equipment is fixed in angle, different positions of the taking position a and the transfer position b and different speed phase angles alpha can be used, and the running parameters of the main servo motor 2 and the swing arm servo motor 1 can also be adjusted to realize variable distance, which greatly improves the universality of the equipment.

[0048] The equipment adopts servo motor transmission, is stable and reliable in work, is not easy to be damaged, has long service life, is low in energy consumption, has an operation speed 50% higher than that of the previous equipment, and has an energy consumption 10% of the previous equipment, can be suitable for all specifications of products, is simple in structure, long in service life, and convenient in maintenance and repair.

[0049] When designed or installed, the following two forms can be used for layout:

[0050] I. The number of the swing arm assembly 6 can be defined as n, the time for a single swing arm assembly 6 to rotate one circle is T, and the adjacent swing arm assemblies 6 are started with an interval of T / n. The installation angle of the swing arm is uniform, but the time points of each work are different. For example, if there are four swing arm servo motors 1, they all start to operate, and start to circulate according to the motion law curve from 1 T / 4, 2 T / 4, 3 T / 4 and T respectively, and then operate with an equal phase angle interval.

[0051] II. The swing arm assembly 6 can also be installed with the same interval angle around the main transmission shaft 7. At this time, each swing arm servo motor 1 operates at the same time, and the interval angle of each swing arm assembly 6 is kept.

[0052] Structurally, the main transmission shaft 7 is sleeved with the branch transmission shaft 5, and each swing arm assembly 6 is rotatably installed on the main transmission shaft 7 through the branch transmission shaft 5. In order to simplify the installation structure, the branch transmission shaft 5 and the main transmission shaft are in the form of sleeve shaft, and the length of the swing arm is adjusted accordingly, so that each adsorption box 8 is in the same operating position.

[0053] In the technical solution, the gear assembly 4 is used for transmission between the speed reducer 21, the outer gear ring input end 3B, each planetary carrier output end 3C and each swing arm assembly 6, so that the device has the advantages of stable, smooth and accurate gear assembly 4, and is not easy to slip when changing direction.

[0054] Structurally, a plurality of adsorption boxes 8 are installed at the end positions of each swing arm assembly 6, and the plurality of adsorption boxes 8 are designed to be set according to the number of sheet materials to be changed in distance at a time, thereby increasing the efficiency.

[0055] Meanwhile, according to different applications of the device or different costs of the device, the number of the swing arm assemblies 6 can be arranged within 3-12, and too few arrangements will waste resources, and too many arrangements will compress the stroke of the speed change, and the parameter requirements of each servo motor will be larger, and the practicability will be reduced, such as Figure 4 As shown, the number of swing arm assemblies 6 is eight, and the adsorption boxes 8 thereon are also arranged singly.

[0056] Moreover, in the design, the range of rotation of the swing arm assembly 6 is the diameter D of the device, and the corresponding parameters are calculated accordingly.

[0057] Although the present application is specifically shown and introduced in combination with the preferred embodiments, it should be understood by those skilled in the art that various changes can be made in form and details without departing from the spirit and scope of the present application defined in the appended claims, and all such changes are within the protection scope of the present application.

Claims

1. A novel high-speed electronic variable speed device, characterized in that: a frame is provided, a main transmission shaft (7) is arranged on the frame, a main servo motor (2) and a speed reducer (21) are connected to the main transmission shaft (7) to drive the rotation of the main transmission shaft (7); a plurality of swing arm assemblies (6) are rotatably installed on the main transmission shaft (7) as the center, an adsorption box (8) is installed at the end of each swing arm assembly (6); a plurality of swing arm servo motors (1) and a matching planetary reducer assembly (3) are connected to each swing arm assembly (6) to drive the rotation of the swing arm assembly (6), the planetary reducer assembly (3) has a sun gear input end (3A) at the center, an outer ring gear input end (3B), and a planet carrier output end (3C), and the swing arm servo motor (1) is in transmission connection with the sun gear input end (3A); the main servo motor (2) and the speed reducer (21) are in transmission connection with the outer ring gear input end (3B); each planet carrier output end (3C) is in transmission connection with each swing arm assembly (6) and drives the rotation of the swing arm assembly (6) along the main transmission shaft (7); the main servo motor (2) rotates at a constant speed, and drives each swing arm through the outer ring gear input end (3B) to have a basic speed V1; each swing arm servo motor (1) is a reciprocating variable speed motion, and the motion law of each swing arm servo motor (1) is the same, the speed is V2, and when the swing arm servo motor (1) is in the same direction as the basic speed V1, the speed is positive, and when the swing arm servo motor (1) is in the opposite direction, the speed is negative, and the speed V of each swing arm is the sum of V1 and V2; a receiving position a for receiving a sheet on a flow line and a transfer position b for outputting the sheet are arranged on the frame, the receiving position a and the transfer position b are spaced apart by a variable speed phase angle a with the main transmission shaft (7) as the center, when the swing arm assembly (6) is located at the receiving position a, the speed V2 is zero.

2. A novel high speed electronic gear shifting device as claimed in claim 1 wherein: The number of the swing arm assemblies (6) is defined as n, the time for a single swing arm assembly (6) to rotate one circle is T, and adjacent swing arm assemblies (6) are started with a spacing of T / n.

3. A novel high speed electronic gear shifting device as claimed in claim 1 wherein: Each swing arm assembly (6) is spaced apart and has the same spacing angle with the main transmission shaft (7) as the center.

4. A new high speed electronic gear shifting device as claimed in claim 1 or 2 or 3 wherein: A branch transmission shaft (5) is arranged on the main transmission shaft (7), and each swing arm assembly (6) is rotatably installed on the main transmission shaft (7) through the branch transmission shaft (5).

5. A new high speed electronic gear shifting device as claimed in claim 1 or 2 or 3 wherein: Gear assemblies (4) are arranged between the speed reducer (21), the outer ring gear input end (3B), each planet carrier output end (3C), and each swing arm assembly (6).

6. A new high speed electronic gear shifting device as claimed in claim 1 or 2 or 3 wherein: A plurality of adsorption boxes (8) are arranged at the end position of each swing arm assembly (6).

7. A new high speed electronic gear shifting device as claimed in claim 1 or 2 or 3 wherein: The variable speed phase angle a is 120 degrees.

8. A new high speed electronic gear shifting device as claimed in claim 1 or 2 or 3 wherein: The variable speed phase angle a is 180 degrees.

9. A new high speed electronic gear shifting device as claimed in claim 1 or 2 or 3 wherein: The number of the swing arm assemblies (6) is 3-12.

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