CN206068741U - A kind of moving material shunt conveying device based on special spiral rod - Google Patents

Abstract

The utility model belongs to the technical field of material packaging and transmission equipment, and provides a continuous material diversion conveying device based on a special-shaped screw, including a conveyor belt, a feeding screw, a driving device and a supporting device. The feeding screw is located on both sides of the conveyor belt and connected to the Two special-shaped screws parallel to the conveyor belt, the two special-shaped screws rotate synchronously in opposite directions, and the fed materials with the same shape are connected head to tail and lined up from one end of the two special-shaped screws. Gradually divide a row of supplied materials into two parallel rows, and output them to the conveyor belt from the other end of the two special-shaped screws. The screw speed can also be adjusted according to production requirements to match the production line. The whole process is high-speed and stable without movement. rigid impact. The device adopts modular design and has the characteristics of low cost, simple and compact structure, convenient installation and debugging, high efficiency and stable performance.

Description

A continuous material split conveying device based on special-shaped screw

technical field

The utility model relates to the technical field of material packaging and conveying equipment, in particular to a continuous material diverting conveying device based on a special-shaped screw.

Background technique

Commodities in modern society are increasingly competitive in trade and circulation. Under the premise of ensuring product quality, the form of product packaging is also changing with each passing day. Consumers have higher and higher requirements for commodity packaging. The coordinated combination of product appearance and function meets consumers' requirements. Packaging machinery is a mechanical device with a high degree of automation. It can greatly increase production efficiency, improve the production environment, reduce production costs, improve commodity grades, and increase product added value, thereby enhancing the market competitiveness of commodities and bringing greater social benefits. benefits and economic benefits.

In the modern production process, it is often necessary to divide one row of continuous materials into two rows of continuous material output for the efficient implementation of the next process. Pneumatic devices or intermittent mechanical devices are generally used in existing production lines to realize the split supply of continuous materials. During the production process The speed impact is large, the working rhythm is slow, and high-speed and stable feeding cannot be achieved, resulting in a decrease in production efficiency. Moreover, these devices are installed on the production line with complex mechanisms, large space occupation, large noise during production, and high cost, which cannot meet the needs of today's products. Packaging production requirements. At present, there is no device that uses a special-shaped screw to divide and feed the materials in the continuous conveying process in the production process.

Contents of the invention

The purpose of this utility model is to provide a continuous material diversion conveying device based on a special-shaped screw, which can well overcome the defects of the prior art and realize the purpose of diverting continuous materials with simple structure, low noise, continuous high speed, stability and no impact.

In order to achieve the above object, the solution of the present utility model is: a continuous material diversion conveying device based on a special-shaped screw, including a conveyor belt, a feeding screw, a driving device and a supporting device, the driving device is used to drive the feeding screw, and the feeding screw It is detachably installed on the supporting device with the driving device; the conveyor belt is used to continuously convey the supplied materials with the same shape, and the feeding screw is two special-shaped screws located on both sides of the upper end of the conveyor belt and parallel to the conveyor belt , the two special-shaped screws rotate synchronously in opposite directions, and the materials to be fed with the same shape are connected head to tail and arranged in a row from one end of the two special-shaped screws. Divided into two parallel columns, output to the conveyor belt from the other end of the two special-shaped screws respectively.

Preferably, the special-shaped screw includes three parts: an initial section, a middle section and a rear section. The initial section is a spiral groove with equal pitch and equal groove depth for introducing materials; the middle section is a spiral groove with variable pitch and variable groove depth. It is used to divide a row of materials into two parallel rows of materials; the rear section is a spiral groove with equal pitch and groove depth, which is used to output the divided materials according to a certain distance.

Preferably, the material to be fed translates forward with the rotation of the spiral groove in the feeding screw on the one hand, and translates to both sides on the conveyor belt with the change of the cross-sectional shape of the spiral groove on the other hand. The line speed of the feeding screw outputting the material to be fed is equal to the speed of the conveyor belt. The whole splitting process is high-speed and stable without rigid impact of movement.

Preferably, the materials to be fed are spherical, bottle-shaped or tank-shaped solid materials with the same size and shape, and the cross-section of the bottle-shaped or tank-shaped materials is circular, square, elliptical or polygonal; the two The cross-sectional gap of the special-shaped screw forms a channel that can accommodate the material to be fed. The outer surface of the material to be fed is meshed with the surface of the spiral groove of the special-shaped screw and is in a line contact state at all times. The material to be fed is driven by the spiral groove. The compound movement of the special-shaped screw in the axial and radial directions ensures the stability of material supply.

Preferably, in the process of the compound movement, the acceleration change of the material to be fed is divided into a constant speed section, a variable acceleration section, a constant acceleration section and a variable deceleration acceleration section, and the acceleration changes between each section adopt a trigonometric function curve for a smooth transition In order to avoid the rigid impact caused by sudden acceleration changes.

Preferably, the two special-shaped screws are respectively driven by two sets of the same driving device; the driving device includes a servo motor, a reducer, a synchronous pulley and a synchronous belt, and the ends of the servo motor and the special-shaped screw are equipped with A synchronous pulley, a synchronous belt is configured on the synchronous belt, and the synchronous belt is used to connect the transmission between the servo motor and the corresponding special-shaped screw; the drive device also includes a motion controller and a servo motor driver, and the motion controller According to the amount of material and the speed of the conveyor belt, the required speed of the feeding screw is calculated, and the speed is output to the servo motor driver. The servo motor driver controls the rotation of the servo motor to complete the synchronous reverse rotation of the two special-shaped screws.

Preferably, the two special-shaped screws are respectively supported by two sets of the same support device, the support device includes a bracket parallel to the conveyor belt, the servo motor and the reducer are detachably fixed on one end of the bracket, and the other end of the bracket is also There is a guide rail support with a locking structure, the guide rail support is used to support the guide rail parallel to the conveyor belt, one end of the guide rail is provided with a guide rail base, and the guide rail base is used to fix the top support; the locking structure is loose When opened, the top support and the guide rail can move horizontally along the direction of the conveyor belt; one end of the special-shaped screw is fixed on the top support, and the other end is fixed on the bracket.

Preferably, the device also includes a material introduction device, which is composed of splints and fasteners, and the fasteners are fixed on the support device; the material introduction device is used to accurately feed the supplied materials into the feed screw to play a role role of positioning.

The utility model has the advantages of simple structure, reliable performance, modular design, compact structure, low cost, low noise and no rigid impact in the production process, convenient speed adjustment, and very convenient assembly and adjustment of the device on the production line. The diverter device can be widely used in daily chemical, medicine, hygiene, food, packaging and other industries to cooperate with the high-speed work of labeling, coding, filling, filling and other processes. Additional advantages, purposes, and features of the present utility model will be partially set forth in the following description, and will be partly apparent to those of ordinary skill in the art after studying the following, or can be known according to the practice of the present utility model . The objectives and other advantages of the utility model will be realized and obtained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Those skilled in the art will appreciate that the purposes and advantages that can be achieved by the utility model are not limited to the specific description above, and the above and other objectives that can be achieved by the utility model will be more clearly understood from the following detailed description.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model device;

Fig. 2 is a schematic diagram of the direction of travel and the direction of rotation of the supplied material and the special-shaped screw of the utility model device;

Figure 3 is the acceleration change curve of the fed material during the compound movement;

Fig. 4 is a schematic diagram of the cross section of the fed material and the spiral groove surface of the special-shaped screw;

Fig. 5 is a schematic diagram of another bottle material distribution and feeding structure of the utility model device;

In the figure: 1-conveyor belt; 2-feeding screw; 3-feed material; 4-bracket; 5-guide rail; 6-guide rail support; 7-locking structure; Top support; 10-servo motor; 11-reducer; 12-synchronous pulley; 13-synchronous belt; 14-material introduction device; 15-splint; 16-fastener.

detailed description

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

Example 1:

As shown in Figures 1 to 4, it is the structure of an embodiment of the present utility model, a continuous material diversion conveying device based on a special-shaped screw, including a conveyor belt 1, a feeding screw 2, a driving device and a supporting device, and the driving The device is used to drive the feeding screw 2, and the feeding screw 2 and the driving device are detachably installed on the supporting device. Among them, the conveyor belt 1 is used to continuously convey the rigid/semi-rigid (metal shell/non-metal shell) materials 3 with the same shape, and the feeding screw 2 is located on both sides of the upper end of the conveyor belt 1 and parallel to the conveyor belt 1. Two special-shaped screws, the two special-shaped screws rotate synchronously in opposite directions, as shown in Figure 2, which shows the rotation direction of the special-shaped screw and the forward direction of the fed material. The materials to be fed 3 with the same shape are connected head to tail to form a row and input from one end of two special-shaped screws. With the change of the pitch and groove depth of the special-shaped screws, a row of materials to be fed is divided into two parallel rows. The other ends of the two special-shaped screws are output to the conveyor belt.

The helical directions of the two special-shaped screws are opposite. The special-shaped screw consists of three parts: the initial section, the middle section and the back section. The initial section is a spiral groove with equal pitch and groove depth, which is used to introduce materials; the middle section is a spiral groove with variable pitch and groove depth, which is used to divide a row of materials into parallel Two rows of materials; the rear section is a spiral groove with equal pitch and groove depth, which is used to output the divided materials according to a certain distance.

The material to be fed 3 in the feeding screw 2, on the one hand, moves forward with the rotation of the spiral groove, and on the other hand, moves on both sides of the conveyor belt 1 with the change of the shape of the spiral groove section, and is divided into two parallel rows. The linear speed at which the feeding screw 2 outputs the material 2 to be fed is equal to the speed of the conveyor belt 1, and the whole diversion process is high-speed and stable without rigid impact of movement.

The supplied material 3 is a spherical, bottle-shaped or can-shaped solid material of equal size and shape. The cross-section of the bottle-shaped or can-shaped material is circular, square, elliptical or polygonal. The cross-section of the feed material 3 is circular. The cross-sectional gap of the two special-shaped screws forms a channel that can accommodate the material 3 to be fed. The outer surface of the material 3 to be fed is meshed with the spiral groove surface of the special-shaped screw and is in a line contact state at all times. The material 3 to be fed is in the spiral Driven by the groove, compound movement is made along the axial and radial directions of the special-shaped screw to ensure the stability of material supply. During the feeding process, the stability of the feeding can be obtained only if the close engagement between the screw helical groove surface and the curved surface of the material to be fed is ensured at the same time, that is, the shape of the helical groove surface strictly changes with the shape of the cross-section of the two. ensure. The relative movement of the two is reflected in the geometry, as shown in Figure 4, with Σ as the imaginary parent surface of the material to be fed, which is engaged with the spiral groove surface Σ ₁ of the screw, and the intersection section Σc of the two is made along the axis of the screw. Simple or compound motion, while the screw rotates around its own axis at an angular velocity ω, the helical groove surface Σ ₁ of the screw is developed as the envelope of the cross section Σc in relative motion.

In the process of compound movement, the acceleration change of the material being fed is divided into constant velocity section I, variable acceleration section II, constant acceleration section III and variable deceleration acceleration section IV, and the acceleration changes between each section adopt trigonometric function curves for smooth transition. In order to avoid the rigid shock caused by sudden acceleration. In order to realize the continuity and gentleness of the velocity change of the material being fed during the feeding process, avoid inertial impact, and ensure the high speed and stability of the feeding motion, the utility model proposes a steady-state feeding variable acceleration motion, that is, when the material is fed During the traveling process of the material 3 to be fed, trigonometric functions are used to transition each section of the acceleration change, as shown in FIG. 3 . This is also the helical variation of the special-shaped screw. The helical form of the special-shaped screw is a key factor related to the shape of the helical groove and the stability of material supply. It is calculated as follows:

In the formula, T-period (s), its value is determined by the total time of each section; t ₂ -time (s); a _m -acceleration of constant acceleration section (mm/s ² ); c _i ——integral constant, i= 1,2,3,4. Some or all of the construction methods of the above-mentioned I, II, III and IV helices can be selected according to the actual situation.

The structure of the special-shaped screw can be realized by constructing a mathematical model of a helix and a mathematical model of a spiral groove according to the shape of the material to be fed. Wherein: the construction of the spiral mathematical model is shown in Figure 3 and discussed above.

The construction of the mathematical model of the spiral groove: the entire movement of the screw feeding is synthesized by two simple movements, namely, the rotation movement of the screw and the movement of the material being fed or other types of movement. The essence of constructing the spiral groove surface of the screw is to investigate the relative positional relationship between the material to be fed and the screw. In the utility model, the motion form of the material to be fed has been determined, and can be solved by coordinate transformation between two or more coordinate systems. The surface equation of the spiral groove meshing with the surface of the material being fed is obtained.

In the construction of the mathematical model of the spiral groove, it is necessary to determine: the geometric principle of the spiral groove surface forming, the solution of the envelope surface equation of the single-parameter surface family, the mathematical modeling of the spiral groove surface based on the single-parameter envelope theory, the solution of the cross-section slice family equation, the meshing Equation solving, spiral groove surface equation, etc.; these can be obtained from the establishment of the mathematical model of the spiral groove.

The two special-shaped screws are respectively driven by two sets of the same driving device; the driving device includes a servo motor 10, a reducer 11, a synchronous pulley 12 and a synchronous belt 13, and the ends of the servo motor 10 and the special-shaped screw are equipped with a synchronous belt Wheel 12, the synchronous belt 13 is configured on the synchronous belt wheel 12, and the synchronous belt 13 is used to connect the transmission between the servo motor 10 and the corresponding special-shaped screw; the driving device also includes a motion controller and a servo motor driver, The motion controller calculates the required speed of the feeding screw according to the amount of material and the speed of the conveyor belt, and outputs the speed to the servo motor driver, which controls the rotation of the servo motor to complete the synchronous reverse rotation of the two special-shaped screws. When the quantity of material changes, the motion controller will follow the change of the quantity of material to adjust the speed of the feeding screw. The device also includes a grating sensor to monitor and feed back the rotation of the screw to ensure that the speed of the two special-shaped screws is synchronized and the direction of rotation is opposite, keeping the relative phase unchanged.

The two special-shaped screws can also be divided into the active special-shaped screw and the driven special-shaped screw. The active special-shaped screw drives the driven special-shaped screw to rotate synchronously through the synchronous gear, and the active special-shaped screw is driven by the driving device. The initial phase adjustment of the screw and the reduction of equipment space adopt the scheme that two special-shaped screws are respectively driven by two sets of identical driving devices.

The two special-shaped screws are respectively supported by two sets of identical supporting devices, the supporting devices include a bracket 4 parallel to the conveyor belt, the servo motor 10 and the reducer 11 are detachably fixed on one end of the bracket 4, and the other side of the bracket 4 One end is also provided with a guide rail support 8 with a locking structure 7, the guide rail support 8 is used to support the guide rail 5 parallel to the conveyor belt 1, one end of the guide rail 5 is provided with a guide rail base 8, and the guide rail base 8 is used for Fix the top support 9; when the locking structure 7 is released, the top support 9 and the guide rail 5 can move horizontally along the direction of the conveyor belt 1; one end of the special-shaped screw is fixed on the top support 9, and the other end is fixed on the on bracket 4. The locking structure 7 may be a toggle clamp.

Example 2:

As shown in Figure 5, it is the structure of another embodiment of the present utility model, and the device can also include a material introduction device 14, which is composed of a splint 15 and a fastener 16, and the fastener 16 is fixed on the supporting device Above; the material introduction device 14 is used to accurately feed the supplied material 3 into the supply screw 2 and play a role of positioning. The cross-section of the supplied material in this embodiment can be square, oval or polygonal.

The above-mentioned embodiments can be changed without departing from the scope of protection of the present utility model, so the structures contained in the above description and shown in the accompanying drawings should be regarded as illustrative rather than limiting the scope of the utility model patent application. protected range.

Claims (8)

1. A continuous material split conveying device based on a special-shaped screw, including a conveyor belt, a feeding screw, a driving device and a supporting device, the driving device is used to drive the feeding screw, and the feeding screw and the driving device are detachably installed on the supporting device above; it is characterized in that the conveyor belt is used for continuously conveying the materials to be fed with the same shape, and the feeding screws are two special-shaped screws located on both sides of the upper end of the conveyor belt and parallel to the conveyor belt, and the direction of the two special-shaped screws On the contrary, it rotates synchronously, and the materials to be fed with the same shape are arranged in a row head to tail and input from one end of two special-shaped screws. With the change of the pitch and groove depth of the special-shaped screws, a row of materials to be fed is divided into two parallel rows. , respectively output to the conveyor belt from the other end of the two special-shaped screws. 2. The device according to claim 1, wherein the special-shaped screw comprises three parts: an initial section, a middle section and a rear section, and the initial section is a spiral groove with equal pitch and groove depth for introducing materials; the middle section It is a spiral groove with variable pitch and groove depth, which is used to divide a row of materials into two parallel rows of materials; the rear section is a spiral groove with equal pitch and groove depth, which is used to separate the divided materials according to a certain distance output. 3. The device according to claim 2, characterized in that, on the one hand, the material to be fed moves forward in translation with the rotation of the spiral groove in the feeding screw, and on the other hand, it is conveyed in accordance with the change of the cross-sectional shape of the spiral groove. The belt moves parallel to both sides and is divided into two parallel rows. The linear speed of the feeding screw outputting the material to be fed is equal to the speed of the conveyor belt. The whole splitting process is high-speed and stable without rigid impact of movement. 4. The device according to claim 1, characterized in that, the materials to be fed are spherical, bottle-shaped or can-shaped solid materials with the same size and shape, and the cross-section of the bottle-shaped or can-shaped materials is a circle shape, square, ellipse or polygon; the cross-sectional gap of the two special-shaped screws forms a channel that can accommodate the material to be fed through, and the outer surface of the material to be fed is meshed with the spiral groove surface of the special-shaped screw and is in line contact at all times In this state, the material to be fed is driven by the spiral groove to make compound movements along the axial and radial directions of the special-shaped screw to ensure the stability of material feeding. 5. The device according to claim 4, characterized in that, in the process of the compound movement, the acceleration change of the supplied material is divided into a constant velocity section, a variable acceleration section, a constant acceleration section and a variable deceleration section, And the acceleration change between each section adopts the trigonometric function curve to smoothly transition to avoid the rigid impact caused by sudden acceleration changes. 6. The device according to claim 1, wherein the two special-shaped screws are respectively driven by two sets of identical driving devices; the driving device includes a servo motor, a reducer, a synchronous pulley and a synchronous belt, so The ends of the servo motor and the special-shaped screw are all provided with a synchronous pulley, and a synchronous belt is arranged on the synchronous pulley, and the synchronous belt is used to connect the transmission between the servo motor and the corresponding special-shaped screw; the drive device also It includes a motion controller and a servo motor driver. The motion controller calculates the required speed of the feeding screw according to the amount of material and the speed of the conveyor belt, and outputs the speed to the servo motor driver. The servo motor driver controls the rotation of the servo motor to complete two special-shaped Synchronous reverse rotation of the screws. 7. The device according to claim 6, wherein the supporting device comprises a bracket parallel to the conveyor belt, the servo motor and the reducer are detachably fixed on one end of the bracket, and the other end of the bracket is also provided with a Guide rail support with locking structure, the guide rail support is used to support the guide rail parallel to the conveyor belt, one end of the guide rail is provided with a guide rail base, and the guide rail base is used to fix the top support; when the locking structure is released , the top support and the guide rail can move horizontally along the direction of the conveyor belt; one end of the special-shaped screw is fixed on the top support, and the other end is fixed on the bracket. 8. The device according to claim 1, characterized in that, the device also includes a material introduction device, which is composed of splints and fasteners, and the fasteners are fixed on the support device; the material introduction device is used for The material to be fed is accurately fed into the feeding screw to play a positioning role.