CN115609944A

CN115609944A - Rubber ring dispensing and forming device based on double cam driving

Info

Publication number: CN115609944A
Application number: CN202211318277.XA
Authority: CN
Inventors: 赵明岩; 李运良; 宋江兵; 吴顺海
Original assignee: China Jiliang University
Current assignee: China Jiliang University
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-01-17

Abstract

The invention discloses a rubber ring dispensing and forming device based on double cam driving, which comprises: the discharging mechanism is used for periodically transmitting rubber strips with equal length; the cutting mechanism is positioned below the discharging mechanism, a positioning hole for the rubber strip to pass through is formed in the cutting mechanism, and the cutting mechanism cuts the rubber strip after the discharging mechanism finishes feeding the rubber strip for one time; the forming mechanism comprises a plurality of forming dies and a pressing die consisting of a semicircular upper die and a semicircular lower die, the pressing die consisting of the semicircular upper die and the semicircular lower die is positioned on the side surface of the rubber strip of the discharging mechanism, and the semicircular upper die and the semicircular lower die are driven to respectively move up and down to the side of the forming die, so that the rubber strip is pressed on the forming dies to complete the forming of the rubber strip; and the glue dispensing mechanism is used for dispensing glue at the interface of the rubber strip. The automatic glue dispensing forming device can realize automatic glue dispensing forming of the rubber ring, is high in production efficiency, and improves product quality and consistency.

Description

Rubber ring dispensing and forming device based on double cam driving

Technical Field

The invention relates to the technical field of rubber automation machinery, in particular to a rubber ring dispensing and forming device based on double-cam driving.

Background

In the prior art, the rubber ring industry is low in mechanization and automation level, basically adopts manual manufacturing, lacks relatively uniform production standards, and is difficult to ensure the product quality. For example, the production process of rubber rings for application occasions such as hair rings, sealing rings and the like can be divided into the following steps: cutting, forming and bonding are all manual operations basically. Because the rubber strip has elasticity and flexibility, the position state of the rubber strip after being cut is difficult to determine under natural conditions, and therefore mechanical positioning and forming are difficult. In addition, during bonding, the rubber strip needs to be manually placed at a bonding device (generally a dispenser) manually. Therefore, cutting, forming and positioning, bonding and blanking all need manual operation in the production process. Although an adhesive machine for rubber strip production is also provided at present, the production tact of the common adhesive machine is about 1.6 seconds per piece, the labor intensity of workers is very high due to the fast-paced feeding mode, and the semi-manual and semi-mechanical adhesive mode still has the defects of low production efficiency, unstable quality, poor product consistency and the like.

Disclosure of Invention

In view of this, the invention provides an automatic production rubber ring dispensing and forming device based on dual cam drive, aiming at the technical problems of low production efficiency, unstable product quality and poor consistency in the prior art, so as to improve the production efficiency, the product quality and the consistency.

The technical scheme of the invention is that a rubber ring dispensing and forming device based on double cam driving is provided, which comprises:

the discharging mechanism is used for periodically transmitting rubber strips with equal length,

the cutting mechanism is positioned below the discharging mechanism and is provided with a positioning hole for the rubber strip to pass through, and after the discharging mechanism finishes one-time feeding of the rubber strip, the cutting mechanism cuts the rubber strip positioned in the positioning hole;

the forming mechanism comprises a plurality of forming dies and a pressing die consisting of a semicircular upper die and a semicircular lower die, the pressing die consisting of the semicircular upper die and the semicircular lower die is positioned on the side surface of the rubber strip of the discharging mechanism, after the rubber strip is fed once, the forming dies are conveyed to the other side surface of the rubber strip, and the semicircular upper die and the semicircular lower die are driven to respectively move up and down to the side of the forming dies so as to press the rubber strip on the forming dies to complete the forming of the rubber strip;

and the glue dispensing mechanism is used for dispensing glue at the interface of the rubber strip.

Optionally, the blanking device further comprises a blowing device, the blowing device is located on the side face of the formed forming die and located at the same horizontal position with the forming die, and the rubber ring on the forming die is blown down under the blowing action force of the blowing device so as to achieve blanking.

Optionally, after the rubber strip is fed once, the forming dies and the pressing dies on two sides of the rubber strip generate a pre-tightening force on the rubber strip, and then the cutting mechanism cuts off the rubber strip.

Optionally, discharge mechanism include first band pulley group and second band pulley group, first band pulley group drives the driver plate through first pivot under the drive of first motor and rotates, the driver plate rotates in succession and intermittent type nature stirs the sheave, the sheave drives its second pivot intermittent type nature rotation at place, install big friction pulley in the pivot of sheave place, little friction pulley in the third pivot, second band pulley group drives second pivot and third pivot rotate, dispose the diameter of big friction pulley and little friction pulley so that the two linear velocity is the same, the rubber strip is coiled on the storage disc, the rubber strip discharge end laminate in between big friction pulley and the little friction pulley.

Optionally, the cutting mechanism includes a second motor, an eccentric wheel, a blade and a cutting sleeve, an output shaft of the second motor is in transmission connection with the second motor to drive the eccentric wheel to rotate, the eccentric wheel drives a connecting rod to move, the blade is hinged to the connecting rod, the blade is sleeved in the cutting sleeve, and a positioning hole is formed in the end section of the cutting sleeve; when the eccentric wheel rotates and drives the connecting rod, the blade moves back and forth in the cutting sleeve to cut off the rubber strip penetrating through the positioning hole.

Optionally, the outer edges of the plurality of forming dies are provided with annular grooves, and the outer half edges of the semicircular upper die and the semicircular lower die are both provided with semicircular annular grooves.

Optionally, the plurality of forming dies are located on the transmission system, the semicircular upper die and the semicircular lower die are respectively connected with an upper die cam push rod and a lower die cam push rod, when the transmission system drives the forming dies to move forward and touch the rubber strips, the lower die cam and the upper die cam rotate, and the semicircular upper die and the semicircular lower die are driven to move through the lower die cam push rod and the upper die cam push rod respectively.

Optionally, the dispensing mechanism comprises a dispensing head and a dispensing cylinder, the piston end of the dispensing cylinder is connected with the dispensing head, and after molding is completed, the dispensing cylinder drives the dispensing head to move to the joint to dispense.

By adopting the structure, compared with the prior art, the invention has the following advantages: the invention realizes intermittent equal-length discharging through the discharging mechanism, and is cut off by the cutting mechanism, the cut rubber strips are annularly arranged on the outer edge of the forming die under the action of the pressing die, the length of the rubber strips is consistent with the perimeter of the forming die, glue dispensing is carried out by the glue dispensing mechanism after forming is finished, and air is blown by the air blowing device to realize blanking after the glue dispensing is finished. The automatic glue dispensing forming device can realize automatic glue dispensing forming of the rubber ring, improves production efficiency, and improves product quality and consistency.

Drawings

FIG. 1 is a schematic structural view of a rubber ring dispensing and forming device based on double cam driving according to the present invention;

FIG. 2 is a schematic structural view of a discharging mechanism;

FIG. 3 is a schematic structural diagram of the discharging mechanism and the cutting mechanism;

FIG. 4 is a schematic view of the cutting mechanism;

FIG. 5 is a schematic structural view of the molding mechanism (first state);

FIG. 6 is a schematic structural view of the molding mechanism (second state);

fig. 7 is a schematic structural view of the molding mechanism (third state);

FIG. 8 is a schematic structural view of a dispensing mechanism;

FIG. 9 is a schematic view of the structure of the air blowing device;

fig. 10 is a schematic structural view of a blanking state.

Shown in the figure: 1-1: a rubber strip; 1-2: a large friction wheel; 1-3: a small friction wheel; 1-4: a material storage tray; 1-5: a dial; 1-6: a first motor; 1-7: a first pulley set; 1-8: a second pulley set; 1-9: a grooved wheel; 2-1: a second motor; 2-2: an eccentric wheel; 2-3: a connecting rod; 2-4: a blade; 2-5, cutting the sleeve; 2-6: positioning holes; 3-1, half-round upper die; 3-2 semicircular lower dies; 3-3: forming a mould; 3-4: a lower die cam; 3-5: an upper die cam; 3-7: a blowing device; 3-8: a transmission system; 4-1: an upper die cam push rod; 4-2: a lower die cam push rod; 4-3: a rubber ring; 4-4 dispensing heads; 4-5: a dispensing cylinder; 4-6: a first hinge; 4-7: a second hinge.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

The invention is intended to cover alternatives, modifications, equivalents, and alternatives that may be included within the spirit and scope of the invention. In the following description of the preferred embodiments of the present invention, specific details are set forth in order to provide a thorough understanding of the present invention, and it will be apparent to those skilled in the art that the present invention may be practiced without these specific details. Moreover, the drawings of the present invention are not necessarily to scale, nor are they necessarily to scale, as may be shown and described herein.

As shown in fig. 1, a specific structure of a rubber ring dispensing and forming device based on dual cam driving of the present invention is illustrated, which includes:

the discharging mechanism is used for periodically transmitting rubber strips 1-1 with equal length,

the cutting mechanism is positioned below the discharging mechanism, a positioning hole for the rubber strip to pass through is formed in the cutting mechanism, and after the discharging mechanism finishes feeding the rubber strip 1-1 for one time, the cutting mechanism cuts the rubber strip 1-1 positioned in the positioning hole 2-6;

the forming mechanism comprises a plurality of forming dies 3-3 and a pressing die consisting of a semicircular upper die 3-1 and a semicircular lower die 3-2, the pressing die consisting of the semicircular upper die 3-1 and the semicircular lower die 3-2 is positioned on the side surface of the rubber strip 1-1 of the discharging mechanism, after the feeding of the rubber strip 1-1 is completed for one time, the forming dies are conveyed to the other side surface of the rubber strip 1-1, and the semicircular upper die 3-1 and the semicircular lower die 3-2 are driven to move up and down to the forming die 3-3 side respectively, so that the rubber strip 1-1 is pressed on the forming die 3-2 to complete the forming of the rubber strip;

As shown in fig. 2, the structure of the discharging mechanism of the present invention is illustrated. The discharging mechanism comprises a first belt pulley group 1-7 and a second belt pulley group 1-8, the first belt pulley group 1-7 is driven by a first motor 1-6 to drive a driving plate 1-5 to rotate through a first rotating shaft, the driving plate 1-5 continuously rotates and intermittently stirs a grooved pulley 1-9, the grooved pulley 1-9 drives a second rotating shaft where the grooved pulley is located to intermittently rotate, a large friction wheel 1-2 is installed on a rotating shaft where the grooved pulley 1-9 is located, a small friction wheel 1-3 is installed on a third rotating shaft, the second belt pulley group 1-8 drives the second rotating shaft and the third rotating shaft to rotate, the diameters of the large friction wheel 1-2 and the small friction wheel 1-3 are configured so that the linear speeds of the large friction wheel and the small friction wheel are the same, a rubber strip 1-1 is coiled on a storage disc 1-4, and the discharging end of the rubber strip 1-1 is attached between the large friction wheel 1-2 and the small friction wheel 1-3. The material storage disc 1-4 is positioned above the discharging mechanism, the rubber belt 1-1 sags and is clamped between the large friction wheel 1-2 and the small friction wheel 1-3, the first belt wheel group 1-7 works to realize that the rubber belt 1-1 is regularly fed in equal length. First pivot, second pivot and third pivot parallel arrangement, and be the horizontal direction and place, fix a position through corresponding axle sleeve, bearing frame etc..

The driving plate 1-5 comprises a driving rod and a sector plate, the driving rod is connected to the inner concave side of the sector plate, a plurality of inner concave arc-shaped pieces are arranged on the grooved wheels 1-9, a driving groove is formed between two adjacent inner concave arc-shaped pieces, the outer edges of the concave arc-shaped pieces are matched with the outer edges of the sector plate, namely, when the driving plate 1-5 rotates, the driving rod just can slide over the outer edges of the concave arc-shaped pieces without touching the outer edges of the concave arc-shaped pieces, and when the driving rod rotates, the driving rod just can be driven to the driving groove, so that the second rotating shaft is driven to rotate.

As shown in fig. 3 and 4, a specific structure of the cutting mechanism of the present invention is illustrated. The cutting mechanism is positioned below the discharging mechanism and comprises a second motor 2-1, an eccentric wheel 2-2, a blade 2-4 and a cutting sleeve 2-5, an output shaft of the second motor 2-1 is in transmission connection with the second motor 2-1 to drive the eccentric wheel 2-2 to rotate, the eccentric wheel 2-2 drives a connecting rod 2-3 to move, the blade 2-4 is hinged to the connecting rod 2-3, the blade 2-4 is sleeved in the cutting sleeve 2-5, and the tail end of the cutting sleeve 2-5 is provided with a positioning hole 2-6; when the eccentric wheel 2-2 rotates and drives the connecting rod 2-3, the blade 2-4 moves back and forth in the cutting sleeve 2-5 to cut off the rubber strip 1-1 penetrating through the positioning hole 2-6. After the feeding of the rubber strip 1-1 is completed once, the forming dies 3-3 and the pressing dies positioned at two sides of the rubber strip 1-1 generate pre-tightening force on the rubber strip 1-1, and then the rubber strip is cut off by the cutting mechanism.

As shown in fig. 5, 6 and 7, the molding mechanism of the present invention is illustrated in different states. Furthermore, annular grooves are formed in the outer edges of a plurality of forming dies 3-3 in the forming mechanism, and semicircular grooves are formed in the outer half edges of the semicircular upper die 3-1 and the semicircular lower die 3-2. The plurality of forming dies 3-3 are positioned on a transmission system 3-8, the semicircular upper die 3-1 and the semicircular lower die 3-2 are respectively connected with an upper die cam push rod 4-1 and a lower die cam push rod 4-2, and when the transmission system 3-8 drives the forming dies 3-3 to move forwards and touch the rubber strips 1-1, the lower die cam 3-4 and the upper die cam 3-5 rotate to respectively drive the semicircular upper die 3-1 and the semicircular lower die 3-2 to move through the lower die cam push rod 4-2 and the upper die cam push rod 4-1. As can be seen from fig. 5, the pressing mold is located in front of the current forming mold, the current forming mold is transferred to the rubber strip, the rubber strip is just clamped between the pressing mold and the forming mold, the boundary line of the semicircular upper mold 3-1 and the semicircular lower mold 3-2 is just opposite to the middle point of the rubber strip, the lower mold cam 3-4 and the upper mold cam 3-5 rotate, and the semicircular upper mold 3-1 and the semicircular lower mold 3-2 respectively press the rubber strip along the outer edge of the forming mold in two directions, which is shown in fig. 6. Fig. 7 shows the completed molding die, which is replaced with the molding die, and the molding die with the rubber ring is located in front of the molding die. The semicircular lower die 3-2 is hinged with the lower die cam push rod 4-2 through a first hinge 4-6, namely, the semicircular lower die 3-2 can rotate for 360 degrees in the forming process; the semicircular upper die 3-1 is hinged with the upper die cam push rod 4-1 through a second hinge 4-7, namely, the semicircular upper die 3-1 can rotate 360 degrees in the forming process.

As shown in fig. 8, the structure of the glue dispensing mechanism is illustrated. The dispensing mechanism comprises a dispensing head 4-4 and a dispensing cylinder 4-5, the piston end of the dispensing cylinder 4-5 is connected with the dispensing head 4-4, and after forming is completed, the dispensing cylinder 4-5 drives the dispensing head 4-4 to move to a joint to realize dispensing operation.

As shown in FIG. 9, the structure of the air blowing device is illustrated. The air blowing device 3-7 is positioned on the side surface of the formed forming die and is positioned at the same horizontal position with the forming die, and the rubber ring on the forming die is blown down under the air blowing action force of the air blowing device 3-7 so as to realize blanking. After the rubber ring is formed, the forming die is continuously conveyed to a station of the blowing device, and the blowing device blows the rubber ring down to realize blanking.

As shown in fig. 10, the state of the present invention at the time of blanking is shown. The finished rubber ring is blown down from the forming die by the blowing device, and a recovery mechanism or a receiving mechanism can be arranged, wherein the mechanism is in a conventional arrangement and can be selected from the prior art, and the process is implemented by the aid of the technology and experience of a person skilled in the art, so that the process is not described in detail herein. For the sake of simplicity, fig. 9 and 10 each illustrate only one molding die, but as shown in fig. 1, a plurality of molding dies are arranged on the transmission system, and when one rubber ring 4-3 is formed, the empty molding die continues to be transported forward after blanking to wait for the next cycle of forming, and the next molding die is transported to the molding die, so that the plurality of molding dies do not have the problem of interference during the forming process.

Although the embodiments have been described and illustrated separately, it will be apparent to those skilled in the art that some common techniques may be substituted and integrated between the embodiments, and reference may be made to one of the embodiments not explicitly described, or to another embodiment described.

The foregoing is illustrative of the preferred embodiments of the present invention only and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. In general, all changes which come within the meaning and range of the claims are to be embraced within their scope.

Claims

1. The utility model provides a forming device is glued to rubber circle point based on two cam drive, includes:

the discharging mechanism is used for periodically transmitting rubber strips (1-1) with equal length;

the cutting mechanism is positioned below the discharging mechanism, a positioning hole for the rubber strip to pass through is formed in the cutting mechanism, and after the discharging mechanism finishes feeding the rubber strip (1-1) for one time, the cutting mechanism cuts the rubber strip (1-1) positioned in the positioning hole (2-6);

the forming mechanism comprises a plurality of forming dies (3-3) and a pressing die consisting of a semicircular upper die (3-1) and a semicircular lower die (3-2), wherein the pressing die consisting of the semicircular upper die (3-1) and the semicircular lower die (3-2) is positioned on the side surface of the rubber strip (1-1) of the discharging mechanism, after the rubber strip (1-1) is fed once, the forming dies are conveyed to the other side surface of the rubber strip (1-1), and the semicircular upper die (3-1) and the semicircular lower die (3-2) are driven to respectively move up and down to the forming die (3-3) side, so that the rubber strip (1-1) is pressed on the forming die (3-2) to complete rubber strip forming;

2. The double-cam-drive-based rubber ring dispensing and forming device as claimed in claim 2, wherein: the blanking device is characterized by further comprising a blowing device (3-7), wherein the blowing device (3-7) is positioned on the side face of the formed forming die and is positioned at the same horizontal position with the forming die, and the rubber ring on the forming die is blown down under the blowing action force of the blowing device (3-7) so as to realize blanking.

3. The rubber ring dispensing and forming device based on double cam driving of claim 1 or 2, wherein: after the feeding of the rubber strip (1-1) is completed once, forming dies (3-3) and pressing dies positioned at two sides of the rubber strip (1-1) generate pre-tightening force on the rubber strip (1-1), and then a cutting mechanism cuts off the rubber strip.

4. The double-cam-drive-based rubber ring dispensing and forming device as claimed in claim 3, wherein: the discharging mechanism comprises a first belt pulley group (1-7) and a second belt pulley group (1-8), the first belt pulley group (1-7) drives a driving plate (1-5) to rotate through a first rotating shaft under the driving of a first motor (1-6), the driving plate (1-5) continuously rotates and intermittently stirs a grooved pulley (1-9), the grooved pulley (1-9) drives a second rotating shaft where the grooved pulley (1-9) is located to intermittently rotate, a large friction wheel (1-2) is installed on a rotating shaft where the grooved pulley (1-9) is located, a small friction wheel (1-3) is arranged on a third rotating shaft, the second belt pulley group (1-8) drives the second rotating shaft and the third rotating shaft to rotate, the diameters of the large friction wheel (1-2) and the small friction wheel (1-3) are configured so that the linear speeds of the large friction wheel and the small friction wheel are the same, a rubber strip (1-1) is coiled on a storage disc (1-4), and the discharging end of the rubber strip (1-1) is attached to the large friction wheel (1-2) and the small friction wheel (1-3).

5. The double cam drive-based rubber ring dispensing and forming device as claimed in claim 3, wherein: the cutting mechanism comprises a second motor (2-1), an eccentric wheel (2-2), a blade (2-4) and a cutting sleeve (2-5), an output shaft of the second motor (2-1) is in transmission connection with the second motor (2-1) to drive the eccentric wheel (2-2) to rotate, the eccentric wheel (2-2) drives a connecting rod (2-3) to move, the blade (2-4) is hinged to the connecting rod (2-3), the blade (2-4) is sleeved in the cutting sleeve (2-5), and a positioning hole (2-6) is formed in the tail section of the cutting sleeve (2-5); when the eccentric wheel (2-2) rotates and drives the connecting rod (2-3), the blade (2-4) moves back and forth in the cutting sleeve (2-5) to cut off the rubber strip (1-1) penetrating through the positioning hole (2-6).

6. The double-cam-drive-based rubber ring dispensing and forming device as claimed in claim 3, wherein: annular grooves are formed in the outer edges of the forming dies (3-3), and semicircular annular grooves are formed in the outer edges of the semicircular upper die (3-1) and the semicircular lower die (3-2).

7. The double cam drive-based rubber ring dispensing and forming device as claimed in claim 3, wherein: the forming dies (3-3) are located on the transmission system (3-8), the semicircular upper die (3-1) and the semicircular lower die (3-2) are respectively connected with an upper die cam push rod (4-1) and a lower die cam push rod (4-2), when the transmission system (3-8) drives the forming dies (3-3) to move forwards to touch the rubber strips (1-1), the lower die cam (3-4) and the upper die cam (3-5) rotate, and the semicircular upper die (3-1) and the semicircular lower die (3-2) are driven to move through the lower die cam push rod (4-2) and the upper die cam push rod (4-1).

8. The double cam drive-based rubber ring dispensing and forming device as claimed in claim 3, wherein: the dispensing mechanism comprises a dispensing head (4-4) and a dispensing cylinder (4-5), the piston end of the dispensing cylinder (4-5) is connected with the dispensing head (4-4), and after forming is completed, the dispensing cylinder (4-5) drives the dispensing head (4-4) to move to a joint to realize dispensing operation.