CN211000204U

CN211000204U - Knurling mechanism for square cup with single roller

Info

Publication number: CN211000204U
Application number: CN201921782415.3U
Authority: CN
Inventors: 胡文斌; 陈志平
Original assignee: ZHEJIANG RUIDA MACHINERY CO Ltd
Current assignee: ZHEJIANG RUIDA MACHINERY CO Ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-07-14
Anticipated expiration: 2029-10-23

Abstract

The utility model discloses a square cup annular knurl mechanism of single gyro wheel, including annular knurl cover and knurling wheel, annular knurl cover fixed connection has square inner chamber on the upper portion of annular knurl seat, and square inner chamber, its characterized in that are located in the knurling wheel activity: the knurling wheel is connected to the vertical wheel shaft, a guide roller which moves along with the knurling wheel is arranged below the knurling wheel, the guide roller rolls in a cam groove, the cam groove is formed in a cam disc, the cam disc is fixed in a knurling seat, the cam groove is also square, the cam groove enables the knurling wheel to always keep the same distance with the wall of a square inner cavity of the knurling sleeve when knurling works, and the guide roller rolls along the cam groove and is pushed by a power driving mechanism. The utility model discloses simple structure can better realize square cup annular knurl action and quality, increases speed.

Description

Knurling mechanism for square cup with single roller

Technical Field

The utility model relates to a paper cup bowl preparation technical field, concretely relates to annular knurl mechanism of paper cup or paper bowl machine.

Background

In the production process of the paper cup and the paper bowl, knurling operation on the bottom of the paper cup and the paper bowl needs to be carried out, and the knurling operation is completed through a cup bottom knurling mechanism. For the paper cups and paper bowls with square shapes (the square shape does not refer to a specific quadrangle and can be a hexagon or other polygons), knurling on the bottom of the cup is difficult to realize, so the prior art generally adopts an expansion-compression forming mode, but the prior art also adopts a knurling mode rarely, and the patent number 200610151940.9 and the patent name 'a square paper cup bottom knurling device of a paper cup forming machine' are disclosed. The technical scheme that this patent adopted is that the radial action of promoting the slider through the upper and lower action of ejector pin, and the knurling wheel is installed on the slider, and the shortcoming is: the ejector rod needs to move up and down, the up-and-down movement of the ejector rod is pushed by the cam, the cam is far away from the knurling part, the precision of the cam is greatly reduced when the curve precision is transmitted to the knurling wheel, the contact pressure between the knurling wheel and the cup bottom is difficult to keep consistent during knurling work, and the knurling quality is influenced; in addition, the radial action of the sliding block needs to keep a small sliding gap, so that the knurling wheels arranged on the sliding block can keep stable and good contact with the wall of the square inner cavity of the knurling sleeve to ensure the knurling quality when knurling works, but the small sliding gap not only increases the processing and assembling difficulty, but also has short service life; in addition, because the ejector pin promotes the chute through the top inclined plane and makes the slider action, inclined plane pushing speed can not be very fast, the up-and-down motion of ejector pin also can not be very fast, otherwise can produce very big noise, still return after going on the ejector pin, consequently the rolling speed of knurling wheel along cup bottom knurling position can not be very fast yet during annular knurl work, and production speed is slow.

Disclosure of Invention

The utility model aims at providing a simple structure can better realize square cup annular knurl action and quality, improves the square cup annular knurl mechanism of single gyro wheel of speed to prior art exists not enoughly.

The utility model discloses a realize through following technical scheme:

square cup annular knurl mechanism of single-roller, including knurling cover and knurling wheel, knurling cover fixed connection is on the upper portion of knurling seat, and the knurling cover has square inner chamber, and square inner chamber, its characterized in that are located in the knurling wheel activity: the knurling wheel is connected to the vertical wheel shaft, a guide roller which moves along with the knurling wheel is arranged below the knurling wheel, the guide roller rolls in a cam groove, the cam groove is formed in a cam disc, the cam disc is fixed in a knurling seat, the cam groove is also square, the cam groove enables the knurling wheel to always keep the same distance with the wall of a square inner cavity of the knurling sleeve when knurling works, and the guide roller rolls along the cam groove and is pushed by a power driving mechanism.

Above-mentioned technical scheme's square cup annular knurl mechanism of single gyro wheel, the rolling route of annular knurl during operation knurling wheel is the same with the cam curve of cam groove, both are close to the transmission route each other for a short time, can guarantee the roll precision of knurling wheel, then the cam curve through design cam groove is the same with the square inner chamber shape of knurling cover, so, the contact pressure that the knurling wheel can easily guarantee the knurling wheel to act on square cup bottom of cup promptly at the knurling during operation keeps unanimous completely, ensure the annular knurl quality, and this annular knurl quality does not receive the upper and lower activity of ejector pin and other factors influences such as inclined plane promotion chute, effectively improve annular knurl speed. In addition, the knurling process has the advantages of less corresponding actions, less action parts and very simple structure.

Preferably, the vertical wheel shaft is arranged on a crank, the crank is hinged to a transmission arm, the transmission arm is fixedly connected with a transmission shaft, the transmission shaft is rotatably arranged in the knurling seat, and the lower shaft end of the transmission shaft is in transmission connection with a power driving mechanism. Through the design, when the transmission shaft rotates, the transmission arm and the crank can be driven to rotate, and then the guide roller is driven to roll along the cam groove, and the knurling wheel is driven to roll along the wall of the square inner cavity of the knurling sleeve simultaneously, so that the knurling action of the cup bottom of the square cup is completed.

Preferably, the cam groove is provided with a notch at a knurling start position, the notch is filled by a movable block, the movable block is provided with a guide groove to keep the cam groove continuous, and the movable block is movably arranged in the radial direction. Through above-mentioned design, can make and let the knurling wheel leave the cam groove before the knurling work, concrete action is: at the annular knurl initial position, guide roller can be just in time located the guide slot of movable block, promotes the movable block and moves inwards as the cylinder, can make guide roller leave the cam groove in the square inner chamber wall of annular knurl wheel and annular knurl cover leaves great clearance between, in the square cup bottom before letting the annular knurl can enter into annular knurl mechanism, also let the square cup that the annular knurl was accomplished leave annular knurl mechanism simultaneously.

Preferably, the bottom of the movable block is connected with a roller, the roller moves radially and is pushed by a roller groove, the roller groove is formed in a rotating disc, the rotating disc is rotatably arranged below the cam disc, gear teeth are arranged on the outer circle of the rotating disc partially and are meshed with a rack, the rack is connected with an air cylinder, and the air cylinder is mounted on the knurling base. The rotary disc is simple in design structure, when the air cylinder pushes the rack to act, the rack can push the rotary disc to rotate, and then the roller groove of the rotary disc pushes the roller to enable the movable block to act radially.

Drawings

The utility model discloses there is following figure:

figure 1 is the outline structure diagram of the utility model,

figure 2 is a first internal structure diagram of the present invention,

fig. 3 is a second internal structure diagram of the present invention.

Detailed Description

As shown in the figure, the single-roller square cup knurling mechanism of the utility model comprises a knurling sleeve 1 and a knurling wheel 8, wherein the knurling sleeve 1 is fixedly connected on the upper part of a knurling seat 5, the knurling sleeve 1 is provided with a square inner cavity 2, the knurling wheel 8 is movably arranged in the square inner cavity 2, the knurling wheel 8 is connected on the upper shaft end of a vertical shaft 9, the lower shaft end of the vertical shaft 9 is connected with a guide roller 17, the guide roller 17 is arranged in a cam groove 4 in a rolling way, the cam groove 4 is arranged on a cam disc 3, the cam disc 3 is fixed in the knurling seat 5, the cam groove 4 is also square, the cam groove 4 enables the knurling wheel 8 to always keep the same distance with the cavity wall of the square inner cavity 2 of the knurling sleeve 1 when knurling works, the vertical shaft 9 is arranged on a crank 10, the crank 10 is hinged with a transmission arm 7 through a hinged shaft 11, the transmission arm 7 is fixedly connected with the, the lower shaft end of the transmission shaft 6 is in transmission connection with a power driving mechanism; the cam groove 4 is provided with a gap at the knurling starting position, the gap is filled by a movable block 14, the movable block 14 is provided with a guide groove 15 to enable the cam groove 4 to keep continuous, the movable block 14 is arranged in a radial movable mode, the bottom of the movable block 14 is connected with a roller 19, the roller 19 is pushed by a roller groove 18 in a radial movable mode, the roller groove 18 is formed in a rotating disc 16, the rotating disc 16 is arranged below the cam disc 3 in a rotating mode, the outer circle part of the rotating disc 16 is provided with gear teeth 20, the gear teeth 20 are meshed with a rack 13, the rack 13 is connected with an air cylinder 12, and the air cylinder 12 is fixedly installed on the knurling base 5.

The utility model discloses a carry out the annular knurl action of square cup like this: when knurling is started, the guide roller is positioned in the guide groove of the movable block, the movable block is close to the central position of the knurling sleeve, a large gap is reserved between the knurling wheel and the wall of the square inner cavity of the knurling sleeve, the bottom of a square cup to be knurled can enter the square inner cavity, after the bottom of the square cup enters the square inner cavity, the air cylinder pushes the rack, the rack pushes the rotating disc, and the roller groove pushes the movable block to move outwards through the roller, so that the guide groove of the movable block is connected with the cam groove, the knurling wheel presses the cup bottom tightly, then the power driving mechanism drives the transmission shaft to rotate, the rotation of the transmission shaft can drive the transmission arm and the crank to rotate, further drive the guide roller to roll along the cam groove, and simultaneously drive the knurling wheel to roll along the wall of the square inner cavity of the knurling sleeve, and roll the; when the annular knurl action was accomplished, transmission shaft stall, the cylinder return drives the movable block and moves inwards simultaneously, lets guide roller leave the cam groove, and the initial position is also got back to the knurling wheel, and the square cup of accomplishing the annular knurl leaves square inner chamber, circulates according to this, carries out the bottom of cup annular knurl of next square paper cup.

Claims

1. Square cup annular knurl mechanism of single-roller, including knurling cover and knurling wheel, knurling cover fixed connection is on the upper portion of knurling seat, and the knurling cover has square inner chamber, and square inner chamber, its characterized in that are located in the knurling wheel activity: the knurling wheel is connected to the vertical wheel shaft, a guide roller which moves along with the knurling wheel is arranged below the knurling wheel, the guide roller rolls in a cam groove, the cam groove is formed in a cam disc, the cam disc is fixed in a knurling seat, the cam groove is also square, the cam groove enables the knurling wheel to always keep the same distance with the wall of a square inner cavity of the knurling sleeve when knurling works, and the guide roller rolls along the cam groove and is pushed by a power driving mechanism.

2. The single roller square cup knurling mechanism of claim 1, wherein: the vertical wheel shaft is arranged on the crank, the crank is hinged to a transmission arm, the transmission arm is fixedly connected with the transmission shaft, the transmission shaft is rotatably arranged in the knurled seat, and the lower shaft end of the transmission shaft is in transmission connection with the power driving mechanism.

3. The single roller square cup knurling mechanism of claim 1 or 2, wherein: the cam groove is provided with a notch at the knurling initial position, the notch is filled by the movable block, the movable block is provided with a guide groove to enable the cam groove to be continuous, and the movable block is arranged in a radial moving mode.

4. The single roller square cup knurling mechanism of claim 3, wherein: the bottom of the movable block is connected with a roller, the roller moves radially and is pushed by a roller groove, the roller groove is formed in a rotating disc, the rotating disc is rotatably arranged below the cam disc, gear teeth are arranged on the outer circle of the rotating disc partially and are meshed with a rack, the rack is connected with an air cylinder, and the air cylinder is mounted on the knurling seat.