CN105798584B - Cam type automatic shaft pressing machine - Google Patents

Abstract

The invention discloses a cam-type automatic shaft pressing machine.A shaft inserting die of a wheel-type shaft inserting device is of a cylindrical structure, accommodating grooves for accommodating a wheel shaft and a gear are uniformly distributed on the outer wall of the shaft inserting die, the bottom outline of the accommodating groove for accommodating the gear is matched with the outline of the gear, a limiting ring is fixedly arranged in the middle of the shaft inserting die, through holes with the same quantity as the accommodating grooves are uniformly distributed on the limiting ring, push rods are penetrated in the through holes, a spiral spring is sleeved between the tail end of each push rod penetrated in the through holes and the limiting ring, a roller wheel is fixedly arranged at the tail end of each push rod fixedly arranged on a cylindrical cam and a bottom plate, and the roller wheel is matched; through setting up many holding tanks on inserting a mould, can once install many sets of gear and shaft, push rod group corresponds the installation with the holding tank, with the supporting installation cylindrical cam of inserting a mould, inserts a mould and is rotating the in-process, and cylindrical cam promotes partial push rod in the push rod group and realizes the assembly of shaft and gear, ensures the interference fit of gear and shaft.

Description

Cam type automatic pressing machine

technical field

The invention relates to the technical field of gear assembly, in particular to a cam type automatic pressing machine.

Background technique

Gear transmission is the most widely used form of transmission in mechanical transmission. Its transmission is relatively accurate, high in efficiency, compact in structure, reliable in operation and long in life.

At present, when domestic toy manufacturers assemble gear reducers commonly used in toys, most of them use manual or semi-automatic machinery for assembly, which has disadvantages such as low efficiency, high scrap rate, and low safety; the existing automatic finale assembly machinery Most of them are single-station assembly methods, and their main disadvantages are:

First, the efficiency cannot be improved. Since all assembly actions are carried out at one station, there is limited room for efficiency improvement;

Second, it can only adapt to the assembly of a single type of steel shaft and plastic pinion, and there are many types of toy reducers, and the combination of steel shaft and plastic pinion is also various. If the assembly of each steel shaft and plastic gear Both require a specific machine, and the cost required by the enterprise will greatly increase, and it is not conducive to the enterprise's product innovation.

A known method of increasing efficiency is to convert single-station work to multi-station work, where each station performs only one assembly action.

At present, an automatic assembly machine for steel shafts and plastic gears used in the watch industry is being researched by relevant personnel in this field: it adopts a disc-type multi-station working method, and decomposes the automatic assembly work of steel shafts and gears into 8 stations. Execution, that is, shaft blanking station, shaft inspection station, gear blanking station, gear inspection station, clamping assembly station, discharge station, discharge inspection station, and discharge secondary inspection station; The automatic feeding of steel shafts and plastic gears adopts electromagnetic circular vibrating hoppers, and steel shafts and plastic gears enter the work station in free fall; however, there are two disadvantages in this structural method. First, the assembly is completed The components are discharged in the form of direct suction by the vacuum pump, which limits the speed of machine assembly and increases the cost of the machine. Second, the designer did not consider the reconfigurable requirements of the machine when designing the machine. The machine can only For the assembly of specific steel shafts and gears, the scope of use of the machine is limited.

Therefore, it is an urgent problem to be solved in this field to develop and design an assembly equipment that can reliably realize the interference assembly of the pinion and the steel shaft, and has the characteristics of easy discharge.

Contents of the invention

The technical problem to be solved by the present invention is to provide a cam-type automatic pressing machine. By setting multiple accommodation grooves on the shaft insertion mold, multiple sets of gears and axles can be installed at one time. The mold is equipped with a cylindrical cam. During the rotation of the shaft inserting mold, the cylindrical cam pushes some of the push rods in the push rod group to realize the assembly of the wheel shaft and the gear, which greatly improves the assembly efficiency and ensures the interference fit of the gear and the wheel shaft.

In order to solve the above technical problems, the technical solution adopted by the present invention is: a cam-type automatic crimping machine, including a frame, a gear feeding device, a wheel shaft feeding device and a wheel-type shaft insertion device, and the wheel-type shaft insertion device It includes a bottom plate, a shaft insertion mold, a push rod group, a cylindrical cam, a reversing gearbox and a shaft insertion motor. The shaft insertion mold is a cylindrical structure, and its outer wall is evenly distributed with accommodating grooves for accommodating wheel shafts and gears. It is arranged coaxially with the accommodation groove for accommodating the wheel shaft and the gear, and the bottom contour of the accommodation groove for accommodating the gear is adapted to the contour of the gear. A through hole with the same number of slots, a set of push rods is pierced in the through hole, and a coil spring is installed between the end of each push rod pierced in the through hole and the limit ring, and the two ends of the shaft insertion mold pass through the bearing and The bearing seat is installed on the bottom plate, the cylindrical cam is fixedly installed with the bottom plate, and is located at the end of the shaft inserting mold. The rotating shaft of the inserting shaft mold passes through the middle of the cylindrical cam and is coaxial with it. The end of each push rod is fixedly installed with a roller , the roller is in rolling fit with the end face of the cylindrical cam.

The accommodating groove for accommodating gears is located at the front end of the shaft insertion mould, the accommodating groove for accommodating the wheel shaft is located in the middle of the shaft insertion mould, the two sections of accommodating grooves are connected to each other, and the outlet of the shaft feeding device is located directly above the shaft insertion mould. , and the position is corresponding to the accommodating groove for accommodating the wheel shaft on the shaft inserting mold, the discharge port of the gear feeding device is located directly above the shaft inserting mold, and its position is corresponding to the accommodating groove for accommodating the gear on the shaft inserting mold correspond.

There are two sets of shaft insertion molds, and the two sets of shaft insertion molds are installed side by side on the frame. Each set of shaft insertion molds is equipped with a set of gear feeding device and a set of wheel shaft feeding device. The shaft ends of the two sets of shaft insertion molds The parts are connected to both ends of the main shaft by means of a reversing gearbox, and the power output end of the plug-in motor drives the main shaft to rotate by means of a chain transmission.

The wheel shaft loading device includes a support frame, a feed bin, a material distribution motor, an eccentric wheel set, an adjustment plate and a blanking channel, and the feed bin is fixedly installed on the top of the support frame, and the feed bin includes an inclined bottom plate and two side The two side plates have the same shape and are installed opposite to each other. The side plates are a right-angled triangular plate structure, and the surface corresponding to the hypotenuse is fixedly installed on the bottom plate. The adjustment plate is installed on the inside of the silo. The plate structure with the same side plate shape, the surface corresponding to the hypotenuse is attached to the top surface of the bottom plate, three sets of nuts are set on one side plate of the silo, each set of nuts is equipped with a bolt, and the front end of the bolt penetrates into the silo , and hinged with the adjusting plate, the material distribution motor is fixed horizontally on the outside of the lower end of the silo, and its power output end is equipped with a material distribution shaft by means of a coupling. The eccentric wheel set is installed in the middle of the distributing shaft, and the lower end of the silo is provided with a channel through which the channel is arranged vertically. In front of the channel entrance, the diameter of the eccentric wheel is equal to the distance between the axis of the distribution shaft and the bottom surface of the feed bin minus the radius of the wheel shaft, and the eccentricity of the eccentric wheel is equal to the radius of the wheel shaft.

The gear feeding device includes a bracket, a material tray and a track. The material tray is a vibrating feeding device. The outlet of the material tray is connected to the feeding track. The slot is directly above.

The beneficial effects produced by adopting the above technical solution are: by setting multiple accommodation grooves on the shaft insertion mold, multiple sets of gears and wheel shafts can be installed at one time, the push rod group is installed correspondingly to the accommodation grooves, and the cylindrical cam is installed with the shaft insertion mold. During the rotation of the shaft insertion mold, the cylindrical cam pushes some of the push rods in the push rod group to realize the assembly of the wheel shaft and the gear, which greatly improves the assembly efficiency. The gear and the axle are fed into the accommodation groove on the outer wall of the shaft insertion mold, and the gear and the axle are placed coaxially in the accommodation groove. The accommodation groove for accommodating the gear is the same as its outer contour. When the push rod pushes the axle, the gear remains motionless , to ensure the interference installation of the gear and the wheel shaft, and compared with the prior art, the present invention has a simpler modular structure and is convenient for maintenance and inspection.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a top view of the present invention;

Fig. 3 is a schematic structural view of the axle feeding device;

Fig. 4 is a schematic structural view of the gear feeding device;

Fig. 5 is a structural schematic diagram of a wheeled shaft insertion device;

Fig. 6 is a schematic diagram of the structure in another direction of Fig. 5;

Fig. 7 is a schematic diagram of the assembled product structure;

Among them: 1. Gear feeding device; 1-1, material tray; 1-2, track; 1-3, bracket; 2, wheel shaft feeding device; 2-1, material bin; 2-2, adjusting plate; 2 -3. Distributing motor; 2-4. Eccentric wheel set; 2-5. Channel; 3. Wheel type shaft inserting device; 3-1. Inserting shaft mold; 3-2. Push rod group; 3-3. Cylinder Cam; 3-4, reversing gear box; 3-5, main shaft; 3-6, plug-in motor; 4, frame; 5, axle; 6, gear.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

As shown in Figure 1-2, the present invention discloses a cam-type automatic crimping machine, which includes a frame 4, a gear feeding device 1, a wheel shaft feeding device 2 and a wheel shaft inserting device 3, the wheel shaft inserting The device 3 includes a bottom plate, a shaft insertion mold 3-1, a push rod group 3-2, a cylindrical cam 3-3, a reversing gear box 3-4 and a shaft insertion motor 3-6, and the shaft insertion mold 3-1 is a circular Cylindrical structure (see Figure 5-6), the outer wall is evenly distributed with the accommodation grooves for the axle and the gear, the accommodation grooves for the axle and the gear are arranged coaxially, the bottom profile of the accommodation groove for the gear Compatible with the outline of the gear, the middle part of the shaft inserting mold 3-1 is fixedly installed with a limit ring, and the number of through holes equal to the number of the receiving grooves are evenly distributed on the limit ring, and the push rod group 3-1 is pierced in the through holes. 2. A helical spring is installed between the end of each push rod and the limit ring in the through hole, and the two ends of the inserting shaft mold 3-1 are installed on the bottom plate through bearings and bearing seats, and the cylindrical cam 3- 3. It is fixedly installed with the bottom plate and is located at the end of the shaft inserting mold 3-1. The rotating shaft of the inserting shaft mold 3-1 passes through the middle of the cylindrical cam 3-3 and is coaxial with it. The tail end of each push rod is fixedly equipped with rollers. Roller and the end face rolling cooperation of cylinder cam 3-3.

The accommodating groove for accommodating the gear 6 is located at the front end of the shaft insertion mold 3-1, the accommodating groove for accommodating the axle 5 is located in the middle of the shaft insertion mold 3-1, and the two sections of accommodating grooves communicate with each other. The outlet is located directly above the shaft insertion mold 3-1, and its position corresponds to the accommodating groove on the shaft insertion mold 3-1 for accommodating the wheel shaft. The outlet of the gear feeding device 1 is located at the shaft insertion mold 3-1. 1 directly above, and its position corresponds to the accommodation groove for accommodating the gear on the shaft insertion mold 3-1. The edge of the accommodation groove can be provided with an arc-shaped edge relative to the outer wall of the shaft insertion mold to prevent the rotation of the shaft insertion mold. In the drop, the assembled product can be dropped at the blanking position.

There are two sets of the shaft insertion mold 3-1 (see accompanying drawing 5-6), and the two sets of shaft insertion molds 3-1 are installed side by side on the frame 4, and each set of shaft insertion mold 3-1 is matched with a set of gears Material device 1 and a set of wheel shaft feeding device 2, the ends of the rotating shafts of two sets of shaft insertion molds 3-1 are respectively connected to both ends of the main shaft 3-5 by means of a reversing gear box 3-4, and the power output of the shaft insertion motor 3-6 The end drives the main shaft 3-5 to rotate by means of a chain drive.

The wheel shaft feeding device 2 includes a support frame, a material bin 2-1, a material distribution motor 2-3, an eccentric wheel pair 2-4, an adjustment plate 2-2 and a blanking channel 2-5 (see accompanying drawing 3), The silo 2-1 is fixedly installed on the top of the support frame. The silo 2-1 includes a bottom plate and two side plates arranged obliquely. The two side plates have the same shape and are oppositely installed. The side plates are in the shape of a right triangle Structure, the surface corresponding to the hypotenuse is fixedly installed with the bottom plate, the adjustment plate 2-2 is installed inside the silo 2-1, the adjustment plate 2-2 is a plate-like structure with the same shape as the side plate, and the hypotenuse corresponds to The top surface of the bottom plate is attached to the top surface of the bottom plate. Three sets of nuts are set on a side plate of the silo 2-1, and each set of nuts is equipped with a bolt. 2 hinged, the material distributing motor 2-3 is horizontally and fixedly installed on the outside of the lower end of the material bin 2-1, and its power output end is equipped with a material distribution shaft by means of a coupling, and the material distribution shaft is located in the material bin 2-1, and its The eccentric wheel pair 2-4 is installed in the middle of the material distribution shaft by means of bearings. -5 The outlet is located directly above the accommodating groove for accommodating the axle, the eccentric wheel set is located in front of the entrance of the channel 2-5, and the diameter of the eccentric wheel is equal to the distance between the axis of the distribution shaft and the bottom surface of the bin 2-1 The distance minus the radius of the axle, the eccentricity of the eccentric is equal to the radius of the axle.

The gear feeding device 1 includes a bracket 1-3, a material tray 1-1 and a track 1-2, the material tray 1-1 is a vibrating feeding device (see Figure 4), and the outlet of the material tray 1-1 The feeding rail 1-2 is docked, and the feeding rail 1-2 is arranged obliquely, and its outlet end is located directly above the accommodating groove for accommodating the gear.

In the specific application process, the present invention sets two sets of shaft insertion moulds, and the wheel shaft feeding device matched with the two sets of shaft insertion molds is installed oppositely, and the two sets of gear feeding devices matched are installed in parallel, and the two sets of shaft insertion molds use a motor Drive, first place a certain number of gears and axles in the gear feeding device and the wheel shaft feeding device, driven by the shaft insertion motor, the shaft insertion mold rotates at a constant speed, and the wheel shaft feeding device and the gear feeding device start at the same time, a The root axle and a set of gears fall into the uppermost accommodation groove at the same time, and the axle insertion mold rotates at a constant speed. During the rotation of the shaft mold, the push rod group and the insert shaft mold are relatively fixed, but they can move axially. Under the action of the cylindrical cam, the push rod pushes the wheel shaft forward. When the push rod reaches the top dead center of the cylindrical cam, The axle and gear are installed in place to form the product as shown in Figure 7. The axle feeding device in the present invention adopts an eccentric wheel type distributing device, and the axle is placed horizontally in the feed bin. Driven by the distributing motor, it rotates eccentrically. Since the eccentricity of the eccentric wheel is the radius of the wheel shaft, the diameter of the eccentric wheel is the distance between the axis of the main shaft and the bottom surface of the silo minus the radius of the wheel shaft. Therefore, each time the eccentric wheel rotates, A wheel shaft is allowed to pass through the eccentric wheel to enter the channel, and the gear feeding device adopts an electromagnetic vibration feeding device, which can orderly send the gears into the corresponding receiving groove.

In a word, the present invention can install multiple sets of gears and axles at one time by providing a plurality of accommodation grooves on the shaft insertion mold. , the cylindrical cam pushes part of the push rods in the push rod group to realize the assembly of the wheel shaft and the gear, which greatly improves the assembly efficiency. The wheel shaft feeding device and the gear feeding device are installed together with the shaft inserting mold, and they are gradually accommodated on the outer wall of the shaft inserting mold. The gear and the axle are sent into the groove, and the gear and axle sent into the receiving groove are placed coaxially. The receiving groove for accommodating the gear is the same as its outer contour. surplus installation, and compared with the prior art, the present invention has a simpler modular structure and is convenient for maintenance and overhaul.

Claims (3)

1. A cam-type automatic pressing machine, characterized in that it includes a frame (4), a gear feeding device (1), a wheel shaft feeding device (2) and a wheel-type shaft insertion device (3). The shaft insertion device (3) includes a bottom plate, a shaft insertion mold (3-1), a push rod group (3-2), a cylindrical cam (3-3), a reversing gear box (3-4) and a shaft insertion motor (3 -6), the shaft inserting mold (3-1) is a cylindrical structure, the outer wall of which is uniformly distributed with accommodation grooves for accommodating the axle and gear, and the accommodating grooves for accommodating the axle and gear are arranged coaxially for The bottom contour of the accommodation groove for accommodating the gear is adapted to the contour of the gear, and the middle part of the shaft insertion mold (3-1) is fixed with a limit ring, and the number of through holes equal to the number of the accommodation groove is evenly distributed on the limit ring. The push rod group (3-2) is pierced in the through hole, and a coil spring is set between the end of each push rod pierced in the through hole and the limit ring, and the two ends of the shaft insertion mold (3-1) pass through the bearing and the bearing seat are installed on the bottom plate, the cylindrical cam (3-3) is fixedly installed with the bottom plate, and is located at the tail end of the shaft insertion mold (3-1), and the rotating shaft of the shaft insertion mold (3-1) passes through the cylindrical cam ( 3-3) In the middle and coaxial with it, the end of each push rod is fixed with a roller, which rolls and fits with the end surface of the cylindrical cam (3-3); The accommodating groove for accommodating gears is located at the front end of the shaft insertion mold (3-1), and the accommodating groove for accommodating the wheel shaft is located in the middle of the shaft insertion mold (3-1). The discharge port of the device (2) is located directly above the shaft insertion mold (3-1), and the position corresponds to the accommodation groove on the shaft insertion mold (3-1) for accommodating the wheel shaft. The gear feeding device (1) The discharge port of the shaft is located directly above the shaft insertion mold (3-1), and the position corresponds to the accommodation groove for accommodating gears on the shaft insertion mold (3-1); Two sets of shaft insertion molds (3-1) are provided, and the two sets of shaft insertion molds (3-1) are installed side by side on the frame (4), and each set of shaft insertion molds (3-1) is matched with a set of gears Material device (1) and a set of wheel shaft feeding device (2), the ends of the shafts of the two sets of inserting shaft molds (3-1) are respectively connected to the main shaft (3-5) by means of the reversing gearbox (3-4). end, the power output end of the plug-in shaft motor (3-6) drives the main shaft (3-5) to rotate by means of a chain drive. 2. The cam-type automatic pressing machine according to claim 1, characterized in that: the wheel shaft loading device (2) includes a support frame, a material bin (2-1), a material distribution motor (2-3), an eccentric wheel set (2-4), adjusting plate (2-2) and blanking channel (2-5), the feed bin (2-1) is fixedly installed on the top of the support frame, and the feed bin (2-1) includes an inclined The bottom plate and two side plates are provided. The two side plates have the same shape and are installed relatively. The side plates are a right-angled triangular plate structure, and the surface corresponding to the hypotenuse is fixedly installed with the bottom plate. The adjustment plate (2-2 ) is installed inside the silo (2-1), the adjusting plate (2-2) is a plate structure with the same shape as the side plate, and the surface corresponding to the hypotenuse is attached to the top surface of the bottom plate, and the silo (2-1) ) are provided with three sets of nuts on one side plate, and each set of nuts is matched with a bolt, and the front end of the bolt penetrates into the material bin (2-1) and is hinged with the adjusting plate (2-2). 2-3) It is horizontally and fixedly installed on the outside of the lower end of the silo (2-1), and its power output end is equipped with a distribution shaft by means of a coupling. It is connected with the two side plates, and the eccentric wheel set (2-4) is installed in the middle of the material distribution shaft. The outlet of the channel (2-5) is located directly above the accommodating groove for accommodating the wheel shaft, the eccentric wheel set is located in front of the inlet of the channel (2-5), and the diameter of the eccentric wheel is equal to the axis of the material distribution shaft and The distance between the bottom surfaces of the silo (2-1) minus the radius of the axle, the eccentricity of the eccentric wheel is equal to the radius of the axle. 3. The cam-type automatic pressing machine according to claim 2, characterized in that: the gear feeding device (1) includes a bracket (1-3), a tray (1-1) and a track (1-2) , the feeding tray (1-1) is a vibrating feeding device, the outlet of the feeding tray (1-1) is connected to the feeding track (1-2), and the feeding track (1-2) is inclined, and its outlet end Located directly above the housing for the gear.