Rubber ring dispensing and molding method

Abstract

The application discloses a rubber ring dispensing and forming method, which comprises the following steps: periodically feeding equal-length rubber strips (1-1) by an ejection mechanism; after the ejection mechanism completes the feeding of a rubber strip (1-1) once, cutting the rubber strip (1-1) located in a positioning hole (2-6) by a cutting mechanism; after the feeding of a rubber strip (1-1) is completed once, a compression mold composed of a semicircular upper mold (3-1) and a semicircular lower mold (3-2) is located at the side of the rubber strip (1-1) of the ejection mechanism, a forming mold is conveyed to the other side of the rubber strip (1-1), the semicircular upper mold (3-1) and the semicircular lower mold (3-2) are driven to move upward and downward to the side of the forming mold (3-3) respectively, so that the rubber strip (1-1) is pressed on the forming mold (3-2) to complete the forming of a rubber ring; and dispensing is performed at the joint of the rubber strip to complete the forming of the rubber ring. The application can realize the automatic dispensing and forming of the rubber ring, has high production efficiency, and improves the product quality and consistency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rubber automation machinery, in particular to a rubber ring dispensing molding method. BACKGROUND

[0002] In the prior art, the rubber ring industry has low mechanization and automation level, and is basically made by hand, and lacks relatively unified production standards, so that the product quality is difficult to guarantee. For example, the rubber ring used in the application occasions such as hair ring and sealing ring has a production process which can be divided into three steps of cutting, molding and bonding, and is basically manually operated. Since the rubber strip has elasticity and flexibility, the position of the rubber strip after cutting is difficult to determine under natural conditions, so that mechanical positioning and molding are more difficult. In addition, during bonding, the rubber strip needs to be manually placed at the bonding equipment (usually a dispensing machine). In this way, cutting, molding positioning, bonding and material dropping all need manual operation in the production process. Although the bonding machine for rubber strip production has appeared, the production rhythm of the commonly used bonding machine is about 1.6 seconds per piece, and such fast feeding mode makes the labor intensity of workers very large, and the semi-manual and semi-mechanical bonding method still has the disadvantages of low production efficiency, unstable product quality and poor product consistency. SUMMARY

[0003] Therefore, the present application provides a rubber ring dispensing molding method for automatic production to improve the production efficiency, product quality and consistency in order to solve the technical problems of low production efficiency, unstable product quality and poor consistency in the prior art.

[0004] The technical solution of the present application is to provide a rubber ring dispensing molding method, which comprises the following steps:

[0005] Periodically outputting equal-length rubber strips by the discharging mechanism;

[0006] After the discharging mechanism completes the feeding of a rubber strip, the rubber strip located in the positioning hole is cut by the cutting mechanism;

[0007] After the feeding of a rubber strip is completed, the pressing die composed of a semicircular upper die and a semicircular lower die is located at the side of the rubber strip of the discharging mechanism, the molding die is conveyed to the other side of the rubber strip, and the semicircular upper die and the semicircular lower die are driven to move upward and downward to the side of the molding die, respectively, so as to press the rubber strip on the molding die to complete the molding of the rubber ring;

[0008] Dispensing at the interface of the rubber strip to complete the molding of the rubber ring.

[0009] Optionally, the molding die on which the rubber ring is formed is transferred to a blowing device located at the side of the molding die and at the same horizontal position as the molding die, and the rubber ring on the molding die is blown off under the blowing force of the blowing device to achieve the discharging.

[0010] Optionally, after the feeding of the rubber strip is completed, the molding die and the pressing die on both sides of the rubber strip generate a pre-tightening force on the rubber strip, and then the cutting mechanism cuts the rubber strip.

[0011] Optionally, the discharging mechanism comprises a first pulley set and a second pulley set, the first pulley set drives the dial to rotate through the first rotating shaft under the driving of the first motor, the dial rotates continuously and intermittently drives the notch wheel, the notch wheel intermittently drives the second rotating shaft on which the large friction wheel is installed, and the third rotating shaft on which the small friction wheel is installed, the second pulley set drives the second rotating shaft and the third rotating shaft to rotate, the diameters of the large friction wheel and the small friction wheel are configured to have the same linear speed, and the rubber strip is coiled on the storage disc, and the discharging end of the rubber strip is attached between the large friction wheel and the small friction wheel.

[0012] Optionally, the cutting mechanism comprises a second motor, an eccentric wheel, a blade, and a cutting sleeve, the 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 the connecting rod to move, the blade is hinged on the connecting rod, the blade is sleeved in the cutting sleeve, and the last section of the cutting sleeve is provided with a positioning hole; when the eccentric wheel rotates and drives the connecting rod, the blade moves forward and backward in the cutting sleeve to cut off the rubber strip inserted in the positioning hole.

[0013] Optionally, the outer edges of the plurality of molding dies are provided with annular grooves, and the outer half edges of the upper half-circular die and the lower half-circular die are provided with half-circular annular grooves.

[0014] Optionally, the plurality of molding dies are located on a transmission system, the upper half-circular die and the lower half-circular die are respectively connected with an upper die cam push rod and a lower die cam push rod, when the transmission system drives the molding dies to move forward to touch the rubber strip, the lower die cam and the upper die cam rotate, and the lower die cam push rod and the upper die cam push rod drive the upper half-circular die and the lower half-circular die to move, respectively.

[0015] 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 the molding is completed, the dispensing cylinder drives the dispensing head to move to the joint to realize the dispensing operation.

[0016] With the above structure, compared with the prior art, the present application has the following advantages: the present application realizes intermittent equal-length discharging, and the cut rubber strip is arranged in a ring shape on the outer edge of the forming die under the action of the pressing die, the length of the rubber strip is consistent with the circumference of the forming die, and after the molding is completed, the rubber strip is glued by the glue dispensing mechanism, and then the rubber strip is blown by the blowing device to realize discharging. The present application can realize automatic glue dispensing and molding of the rubber ring, improve the production efficiency, and improve the product quality and consistency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a structural schematic diagram of the rubber ring glue dispensing and molding device;

[0018] Figure 2 Fig. 4 is a structural schematic diagram of the discharging mechanism;

[0019] Figure 3 Fig. 5 is a structural schematic diagram of the discharging mechanism and the cutting mechanism;

[0020] Figure 4 Fig. 6 is a structural schematic diagram of the cutting mechanism;

[0021] Figure 5 Fig. 7 is a structural schematic diagram of the forming mechanism (first state);

[0022] Figure 6 Fig. 8 is a structural schematic diagram of the forming mechanism (second state);

[0023] Figure 7 Fig. 9 is a structural schematic diagram of the forming mechanism (third state);

[0024] Figure 8 Fig. 10 is a structural schematic diagram of the glue dispensing mechanism;

[0025] Figure 9 Fig. 11 is a structural schematic diagram of the blowing device;

[0026] Figure 10 Fig. 12 is a structural schematic diagram of the discharging state;

[0027] Figure 11 Fig. 13 is a flow chart of the steps of the present application.

[0028] In the diagram: 1-1: Rubber strip; 1-2: Large friction wheel; 1-3: Small friction wheel; 1-4: Storage tray; 1-5: Dial; 1-6: First motor; 1-7: First pulley group; 1-8: Second pulley group; 1-9: Grooved wheel; 2-1: Second motor; 2-2: Eccentric wheel; 2-3: Connecting rod; 2-4: Blade; 2-5: Cutting sleeve; 2-6: Positioning hole; 3-1: Semi-circular upper mold; 3-2: Semi-circular lower mold; 3-3: Forming mold; 3-4: Lower mold cam; 3-5: Upper mold cam; 3-7: Air blowing device; 3-8: Transmission system; 4-1: Upper mold cam push rod; 4-2: Lower mold cam push rod; 4-3: Rubber ring; 4-4: Dispensing head; 4-5: Dispensing cylinder; 4-6: First hinge; 4-7: Second hinge. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, the accompanying drawings are not drawn to scale precisely for illustrative purposes and are intentionally left blank.

[0031] like Figure 1 The diagram illustrates the specific structure of the rubber ring dispensing and molding device. To explain the steps of this invention, the specific device structure is set up as shown below. Figure 1 The rubber ring dispensing molding method of the present invention includes the following steps:

[0032] Rubber strips 1-1 of equal length are periodically conveyed by the discharge mechanism;

[0033] After the discharge mechanism completes one feeding of the rubber strip 1-1, the cutting mechanism cuts the rubber strip 1-1 located in the positioning hole 2-6;

[0034] After the rubber strip 1-1 is fed once, the pressing mold composed of the semi-circular upper mold 3-1 and the semi-circular lower mold 3-2 is located on the side of the rubber strip 1-1 in the discharge mechanism, and the forming mold is transferred to the other side of the rubber strip 1-1. The semi-circular upper mold 3-1 and the semi-circular lower mold 3-2 are driven to move up and down towards the forming mold 3-3 respectively, so as to press the rubber strip 1-1 on the forming mold 3-2 to complete the rubber ring forming.

[0035] Apply adhesive to the joint of the rubber strip to complete the rubber ring forming.

[0036] For detailed process steps, please refer to Figure 11 .

[0037] As shown in Figure 2 , the structure of the discharge mechanism of the present application is illustrated. The discharge mechanism comprises a first pulley set 1-7 and a second pulley set 1-8, the first pulley set 1-7 is driven by the first motor 1-6 to rotate the dial 1-5 through the first rotating shaft, the dial 1-5 rotates continuously and intermittently pushes the notch wheel 1-9, the notch wheel 1-9 drives the second rotating shaft where it is located to rotate intermittently, the notch wheel 1-9 is installed on the second rotating shaft, the large friction wheel 1-2 is installed on the third rotating shaft, the second pulley set 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 to have the same linear velocity, the rubber strip 1-1 is coiled on the storage disc 1-4, and the rubber strip 1-1 is attached between the large friction wheel 1-2 and the small friction wheel 1-3. The storage disc 1-4 is located above the discharge mechanism, the rubber strip 1-1 is suspended and clamped between the large friction wheel 1-2 and the small friction wheel 1-3, and the first pulley set 1-7 works to realize that the rubber strip 1-1 is periodically fed in equal length. The first rotating shaft, the second rotating shaft and the third rotating shaft are arranged in parallel and placed in a horizontal direction, and are positioned by corresponding shaft sleeves, bearing seats and the like.

[0038] The dial 1-5 comprises a dial rod and a sector plate, the dial rod is connected to the inner concave side of the sector plate, a plurality of inner concave arc-shaped pieces are provided on the notch wheel 1-9, a dial slot is provided between two adjacent inner concave arc-shaped pieces, the outer edge of the concave arc-shaped piece matches the outer edge of the sector plate, that is, when the dial 1-5 rotates, it can just slide through without touching the outer edge of the concave arc-shaped piece, and the dial rod can just dial into the dial slot when rotating, thereby driving the second rotating shaft to rotate.

[0039] As shown in Figure 3 and Figure 4 , the specific structure of the cutting mechanism is illustrated. The cutting mechanism is located below the discharge mechanism, and the cutting mechanism comprises a second motor 2-1, an eccentric wheel 2-2, a blade 2-4 and a cutting sleeve 2-5, the 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 the connecting rod 2-3 to move, the connecting rod 2-3 is hinged with the blade 2-4, the blade 2-4 is sleeved in the cutting sleeve 2-5, and the last segment 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 forward and backward in the cutting sleeve 2-5 to realize cutting off the rubber strip 1-1 inserted in the positioning hole 2-6. After completing the feeding of the rubber strip 1-1 once, the forming die 3-3 and the pressing die located on both sides of the rubber strip 1-1 generate a pre-tightening force on the rubber strip 1-1, and then the cutting mechanism cuts off the rubber strip.

[0040] AsFigure 5 、 Figure 6 and Figure 7 , respectively, illustrate different states of the molding mechanism of the present application. Further, the outer edges of the plurality of molding dies 3-3 are provided with annular grooves, and the outer edges of the upper half-mold 3-1 and the lower half-mold 3-2 are provided with half-annular grooves. The plurality of molding dies 3-3 are located on a transmission system 3-8, and the upper half-mold 3-1 and the lower half-mold 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 molding dies 3-3 to move forward to touch the rubber strip 1-1, the lower die cam 3-4 and the upper die cam 3-5 rotate, and drive the upper half-mold 3-1 and the lower half-mold 3-2 to move through the lower die cam push rod 4-2 and the upper die cam push rod 4-1, respectively. As shown in Figure 5 , the mold is located in front of the current molding die, and when the current molding die is conveyed to the rubber strip, the rubber strip is clamped between the mold and the molding die, and the dividing line of the upper half-mold 3-1 and the lower half-mold 3-2 is just for the midpoint of the rubber strip. The lower die cam 3-4 and the upper die cam 3-5 rotate, and the upper half-mold 3-1 and the lower half-mold 3-2 press the rubber strip in two directions along the outer edges of the molding die, and the process is shown in Figure 6 . Figure 7 , the molding die after the pressing is shown. At this time, the molding die and the mold have exchanged positions, and the molding die with the rubber ring is located in front of the mold. The lower half-mold 3-2 and the lower die cam push rod 4-2 are hinged through a first hinge 4-6, that is, the lower half-mold 3-2 can rotate 360° during the molding process. The upper half-mold 3-1 and the upper die cam push rod 4-1 are hinged through a second hinge 4-7, that is, the upper half-mold 3-1 can rotate 360° during the molding process.

[0041] As shown in Figure 8 , the structure of the dispensing mechanism is shown. The dispensing mechanism includes a dispensing head 4-4 and a dispensing cylinder 4-5, and the piston end of the dispensing cylinder 4-5 is connected with the dispensing head 4-4. After the molding is completed, the dispensing cylinder 4-5 drives the dispensing head 4-4 to move to the joint to realize the dispensing operation.

[0042] As shown in Figure 9 , the structure of the blowing device is shown. The blowing device 3-7 is located on the side of the molding die after the molding is completed and is in the same horizontal position. Under the blowing force of the blowing device 3-7, the rubber ring on the molding die is blown down to realize the discharging. After the molding of the rubber ring is completed, the molding die continues to convey to the working position of the blowing device, and the rubber ring is blown down by the blowing device to realize the discharging.

[0043] As shown in Figure 10As shown, the state of the present application is shown. Finished rubber ring is blown down from the molding die by blowing device, can set recycling mechanism or receiving mechanism, such mechanism is conventional setting, can be selected from the prior art, and is implemented by the skill and experience of those skilled in the art, so here is not redundant. In order to simplify the schematic, Figure 9 and Figure 10 Both only show a molding die, but as Figure 1 As shown, a plurality of molding dies are arranged on the transmission system, and when one rubber ring 4-3 is formed, the unloaded molding die is continuously transmitted forward to wait for the next cycle of molding after the blanking, and the next molding die is transmitted to the pressing die. Therefore, in the molding process, there is no interference problem with multiple molding dies.

[0044] Although the above embodiments are described and explained separately, the part involved is common to the technology, which can be replaced and integrated between the embodiments in the view of those skilled in the art. If the content not clearly recorded in one of the embodiments is not recorded, it can be referred to another embodiment.

[0045] The above only describes the preferred embodiments of the present application, but cannot be understood as a limitation on the claims. The present application is not limited to the above embodiments, and the specific structure allows changes. In short, all kinds of changes made within the protection scope of the independent claims of the present application are within the protection scope of the present application.

Claims

1. A method of dispensing and molding a rubber ring, the method comprising: It comprises the following steps: ​ Periodically feeding out equal-length rubber strips (1-1) by the discharging mechanism; After the discharging mechanism completes the feeding of a rubber strip (1-1), cutting the rubber strip (1-1) located in the positioning hole (2-6) by the cutting mechanism; After the feeding of a rubber strip (1-1) is completed, the pressing die composed of the semicircular upper die (3-1) and the semicircular lower die (3-2) is located at the side of the rubber strip (1-1) in the discharging mechanism, the molding die is conveyed to the other side of the rubber strip (1-1), and the semicircular upper die (3-1) and the semicircular lower die (3-2) are driven to move upward and downward, respectively, to the side of the molding die (3-3), so as to press the rubber strip (1-1) on the molding die (3-2) to complete the molding of the rubber ring; Dispensing at the joint of the rubber strip to complete the molding of the rubber ring; After the feeding of a rubber strip (1-1) is completed, the molding die (3-3) and the pressing die located at the two sides of the rubber strip (1-1) generate a pre-tightening force on the rubber strip (1-1), and then the cutting mechanism cuts the rubber strip; The discharging mechanism comprises a first pulley set (1-7) and a second pulley set (1-8), the first pulley set (1-7) is driven by a first motor (1-6) to rotate a dial (1-5) through a first rotating shaft, the dial (1-5) continuously rotates and intermittently drives a grooved wheel (1-9), the grooved wheel (1-9) intermittently rotates a second rotating shaft on which it is located, a large friction wheel (1-2) is installed on the rotating shaft of the grooved wheel (1-9), a small friction wheel (1-3) is installed on a third rotating shaft, the second pulley set (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 to be the same so that their linear speeds are the same, and 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 molding die (3-3) is located 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), when the transmission system (3-8) drives the molding die (3-3) to move forward and touch the rubber strip (1-1), a lower die cam (3-4) and an upper die cam (3-5) rotate, 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).

2. The rubber ring dispensing molding method according to claim 1, characterized by: The molding die on which the rubber ring has been molded is conveyed to a blowing device (3-7) by a blowing device (3-7), the blowing device (3-7) is located at the side of the molding die and is in the same horizontal position as the molding die, and under the blowing force of the blowing device (3-7), the rubber ring on the molding die is blown off to achieve discharging.

3. The rubber ring dispensing molding method according to claim 1, characterized by: The cutting mechanism comprises a second motor (2-1), an eccentric wheel (2-2), a blade (2-4) and a cutting sleeve (2-5), the 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 the connecting rod (2-3) to move, the connecting rod (2-3) is hinged with the blade (2-4), the blade (2-4) is sleeved in the cutting sleeve (2-5), and the tail section 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 forward and backward in the cutting sleeve (2-5) to realize the cutting of the rubber strip (1-1) passing through the positioning hole (2-6).

4. The rubber ring dispensing molding method of claim 1, wherein: The outer edge of the plurality of forming dies (3-3) is provided with an annular groove, and the outer half edge of the semicircular upper die (3-1) and the semicircular lower die (3-2) is provided with a semicircular annular groove.

5. The rubber ring dispensing molding method of claim 1, wherein: The point glue is completed by a point glue mechanism, the point glue mechanism comprises a point glue head (4-4) and a point glue cylinder (4-5), the piston end of the point glue cylinder (4-5) is connected with the point glue head (4-4), after forming, the point glue cylinder (4-5) drives the point glue head (4-4) to move to the joint to realize the point glue operation.

Images