CN206068740U - A kind of moving material packet conveyer 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 grouping 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 segmented special-shaped screws parallel to the conveyor belt, the two segmented special-shaped screws rotate in opposite directions and synchronously, the fed materials with the same shape are connected head to tail and arranged in a row from one end of the two special-shaped screws. The change of the screw pitch and the depth of the groove carries out a specified number of groupings for the fed materials, and is continuously output to the conveyor belt from the other end of the two segmented 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 rigid impact of movement. 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 grouping 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 grouping 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, product packaging forms are also changing with each passing day. Consumers have higher and higher requirements for commodity packaging. Among them, commodity combination packaging is convenient for distribution at the sales terminal, simple and practical , Contribute to product promotion and other characteristics, product appearance and function coordination and combination meet the requirements of consumers. 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 group and output a row of continuous materials according to a certain amount for the efficient implementation of the next process. Pneumatic devices or intermittent mechanical mechanism devices are generally used in existing production lines to realize group feeding of continuous materials. During the production process, the speed The 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 product packaging. production requirements. At present, there is no device in the production process that uses a special-shaped screw to group the materials in the continuous conveying process.

Contents of the invention

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

In order to achieve the above object, the solution of the present utility model is: a continuous material grouping 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. The conveyor belt is used to continuously convey the supplied materials with the same shape. The feeding screws are two segmented special-shaped screws located on both sides of the upper end of the conveyor belt and parallel to the conveyor belt. The direction of the two segmented special-shaped screws is On the contrary, it rotates synchronously. The materials to be fed with the same shape are connected head to tail and are input from one end of two segmented special-shaped screws. With the change of the pitch and groove depth of the special-shaped screws, a specified number of materials to be fed is carried out. Grouped, and continuously output to the conveyor belt from the other end of the two segmented special-shaped screws.

Preferably, the segmented special-shaped screw includes an initial stage screw and a rear stage screw, and the initial stage screw is a spiral groove with equal pitch and equal groove depth, which is used to introduce materials so that the fed materials are delivered to the rear stage at equal distances and at a uniform speed. The first stage screw; the rear stage screw is a spiral groove with variable pitch and variable groove depth, which is used to group the materials in a specified number and output them continuously; the initial stage screw and the rear stage screw are fixed on the same mandrel.

Preferably, on the one hand, the material to be fed translates forward with the rotation of the helical groove in the feeding screw, and on the other hand, it is grouped by a specified number under the pushing and blocking action of the helical groove, and the output of the feeding screw is supplied The linear speed of feeding materials is equal to the speed of the conveyor belt, and the whole grouping process is high-speed and stable, without rigid impact of movement.

Preferably, the materials to be fed are spherical, bottle-shaped or can-shaped container materials of equal size and shape, and the cross-section of the bottle-shaped or can-shaped materials is circular, square, elliptical or polygonal; The cross-sectional gap of the two segmented special-shaped screws forms a channel that can accommodate the material to be fed. 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. The material 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.

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 segmented special-shaped screws are respectively driven by two sets of the same driving device; the driving device includes a servo motor, a tire end and a timing 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 end of the wheel, 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 support device includes a base parallel to the conveyor belt, one end of the base is provided with a support for the long axis end of the screw, and the other end is provided with a guide rail support with a locking structure; the servo motor is detachably fixed On the support at the long axis end of the screw, 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, which is used to fix the screw support; when the locking structure is released, the screw 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 screw support, and the other end is fixed on the support of the long axis end of the screw.

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 grouping device can be widely used in daily chemical, medicine, sanitation, food, packaging and other industries to cooperate with the high-speed work of wrapping, heat shrinking and other processes.

The utility model realizes the grouping of materials in the production line in a high-speed and continuous manner. The special-shaped screw can effectively prevent container materials from being squeezed or burst, and the distance between each group of materials can be changed according to production requirements. .

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;

In the figure: 1-conveyor belt; 2-first stage screw; 3-synchronous belt; 4-screw long shaft end support; 5-base; 6-servo motor; 7-rear screw; 8-guide rail; 9-locking Structural parts; 10-rail base; 11-screw support; 12-rail support.

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.

As shown in Figures 1 to 4, it is the structure of an embodiment of the present utility model, a continuous material grouping conveying device based on a special-shaped screw, including a conveyor belt 1, a feeding screw, a driving device and a supporting device, and the driving device Used to drive the feeding screw, the feeding screw and the driving device are detachably installed on the supporting device. The conveyor belt 1 is used to continuously convey rigid/semi-rigid (metal shell/non-metal shell) materials to be fed with the same shape. A segmented special-shaped screw, two segmented special-shaped screws rotate in opposite directions synchronously, as shown in Figure 2, which shows the rotation direction of the special-shaped screw and the forward direction of the fed material. The supplied materials with the same shape are connected head to tail and input from one end of two segmented special-shaped screws. With the change of the pitch and groove depth of the special-shaped screws, the supplied materials are grouped by a specified number, and from the The other ends of the two segmented special-shaped screws are continuously output to the conveyor belt 1.

The helical directions of the two segmented special-shaped screws are opposite. The segmented special-shaped screw includes an initial stage screw 2 and a rear stage screw 7. The initial stage screw 2 is a spiral groove with equal pitch and equal groove depth, which is used to introduce materials so that the fed materials are equidistant and uniformly delivered to the rear stage screw. ; The rear screw 7 is a spiral groove with variable pitch and groove depth, which is used to group the materials in a specified number and output them continuously; the initial screw 2 and the rear screw 7 are fixed on the same mandrel.

On the one hand, the material to be fed translates forward with the rotation of the spiral groove in the feeding screw, and on the other hand, it is divided into a specified number of groups under the pushing and blocking action of the spiral groove, and the feeding screw outputs the linear velocity of the material to be fed Equal to the speed of the conveyor belt, the whole grouping process is high-speed and stable, without rigid impact of movement.

The materials to be fed are spherical, bottle-shaped or can-shaped container materials with the same size and shape. The cross-section of the bottle-shaped or can-shaped materials is circular, square, elliptical or polygonal. The cross-section of the feeding material is circular. The cross-sectional gap of the two special-shaped screws forms a channel that can accommodate the material to be fed. 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. The material to be fed is driven by the spiral groove. Composite movement along the axial and radial directions of the special-shaped screw ensures the stability of material supply. During the feeding process, the stability of the feeding can be obtained only when the close engagement between the screw helical groove surface and the curved surface of the material being 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 Trigonometric functions are used to transition each section of the acceleration change during the process of feeding materials, as shown in Figure 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/s2); c _i -integral constant, i=1 ,2,3,4. Part 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 segmented special-shaped screws are respectively driven by two sets of the same driving device; the driving device includes a servo motor 6, a tire end and a timing belt 3, and the ends of the servo motor 6 and the special-shaped screw are equipped with a timing belt A synchronous belt 3 is configured on the end of the wheel, and the synchronous belt 3 is used to connect the transmission between the servo motor 6 and the corresponding special-shaped screw; the drive device also includes a motion controller and a servo motor driver, and the motion control The controller calculates the required rotation speed of the feeding screw according to the quantity of materials 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 support device includes a base 5 parallel to the conveyor belt 1, one end of the base 5 is provided with a support 4 at the long axis end of the screw, and the other end is provided with a guide rail support 12 with a locking structure 9; the servo motor 6 is detachable fixed on the long shaft end support 4 of the screw, the guide rail support 12 is used to support the guide rail 8 parallel to the conveyor belt 1, one end of the guide rail 8 is provided with a guide rail base 10, and the guide rail base 10 is used to fix the screw rod support 11; When the tightening member 9 is loosened, the screw support 11 and the guide rail 8 can move horizontally along the direction of the conveyor belt 1; superior. The locking structure 9 may be a toggle clamp.

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 (7)

1. A continuous material grouping 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 to continuously convey the supplied materials with the same shape, and the supply screws are two segmented special-shaped screws located on both sides of the upper end of the conveyor belt and parallel to the conveyor belt, The segmented special-shaped screws rotate in opposite directions and synchronously. The materials to be fed with the same shape are connected head to tail and lined up from one end of the two segmented special-shaped screws. The sent materials are grouped into specified numbers, and are continuously output to the conveyor belt from the other end of the two segmented special-shaped screws. 2. The device according to claim 1, wherein the segmented special-shaped screw comprises an initial stage screw and a rear stage screw, and the initial stage screw is a spiral groove with equal pitch and equal groove depth for introducing materials, so that The supplied material is equidistantly and uniformly conveyed to the rear screw; the rear screw is a spiral groove with variable pitch and groove depth, which is used to group the materials in a specified number and output them continuously; the initial screw and the rear screw fixed on the same mandrel. 3. The device according to claim 2, characterized in that, on the one hand, the material to be fed translates forward with the rotation of the helical groove in the feeding screw, and on the other hand, it is pushed and blocked by the helical groove Carry out a specified number of groupings, and the linear speed of the feeding screw outputting the supplied material is equal to the speed of the conveyor belt. The whole grouping 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 container materials with the same size and shape, and the cross-section of the bottle-shaped or can-shaped materials is Circular, square, elliptical or polygonal; the cross-sectional gaps of the two segmented special-shaped screws form 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 It is always in a line contact state, and 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 segmented special-shaped screws are respectively driven by two sets of identical driving devices; the driving device includes a servo motor, a wheel end and a synchronous belt, so The ends of the servo motor and the special-shaped screw are provided with a synchronous pulley, and a synchronous belt is arranged on the end of the wheel, 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 Synchronized reverse rotation of the screws. 7. The device according to claim 6, characterized in that, the supporting device comprises a base parallel to the conveyor belt, one end of the base is provided with a support at the long axis end of the screw, and the other end is provided with a locking structure. Guide rail support; the servo motor is detachably fixed on the support at the long axis end of the screw, 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 screw support ; When the locking structure is loosened, the screw support and guide rail can move horizontally along the direction of the conveyor belt; one end of the special-shaped screw is fixed on the screw support, and the other end is fixed on the long axis end support of the screw.