Gasket forming device and forming method

Abstract

The present invention relates to a gasket forming device and forming method, comprising a bracket, a chain transmission device is installed on the bracket, the transmission chain of the chain transmission device is composed of a plurality of uniformly arranged forming blocks, a support frame is installed on the bracket, roller guides cooperating with the transmission chain are symmetrically installed on both sides of the support frame, and forming rollers and shearing rollers are installed above the forming blocks through roller frames; an extruder is installed on one side of the bracket, the extrusion die of the extruder is docked with the upper surface of the forming block, and a waste reel is installed on the other side of the bracket. By using a set of smooth rollers to cooperate with the two forms of grooves on the forming panel, the forming rings in the grooves and the die-cutting blade design, standard gaskets of two shapes can be formed, with good forming effect and high efficiency, and the waste can be recycled for secondary use.

Description

Technical Field

[0001] The invention relates to the technical field of gasket manufacturing equipment, in particular to a gasket forming device and a forming method. Background Art

[0002] Bottle cap gaskets are classified into round gaskets or ring gaskets based on their shapes. Bottle cap gaskets are usually produced by injection molding or die-cutting and stamping of plastic sheets. The production process and equipment are complex, the production efficiency is low, and the control difficulty is high. During the die-cutting process, the mold structure is complex, the operation is inconvenient, the mold material utilization rate is low, and resources are wasted. Summary of the invention

[0003] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a gasket forming device and a forming method. The equipment is simple and convenient, with high dimensional accuracy, and waste materials can be recycled and reused, thus saving resources.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A gasket forming device comprises a bracket, on which a chain transmission device is installed, the transmission chain of the chain transmission device is composed of a plurality of evenly arranged forming blocks, a support frame is installed on the bracket, roller guide rails cooperating with the transmission chain are symmetrically installed on both sides of the support frame, and forming rollers and shearing rollers are installed above the forming blocks through roller frames; an extruder is installed on one side of the bracket, and the extrusion die of the extruder is connected to the upper surface of the forming block, and a waste reel is installed on the other side of the bracket.

[0006] The installation structure of the forming block is as follows: it includes a channel steel-shaped base, two parallel roller pins pass through the two ends of the base, and rollers that roll along the roller guide rails are respectively installed at the two ends of the roller pins. A forming panel is installed above the base through fasteners, and a first circular groove is opened in the middle of the forming panel, and an annular groove is opened on the forming panel of the outer circle of the first circular groove. A first forming ring flush with the top surface of the forming panel is installed in the first circular groove, and a circular second forming ring is installed in the annular groove. The top surface height of the second forming ring is lower than the top surface height of the first forming ring, and a first die-cutting edge is installed along the inner diameter and outer diameter of the second forming ring; the rollers of multiple forming blocks constitute the transmission chain of the chain transmission device and are meshed with the sprocket of the chain transmission device.

[0007] The top of the first die-cutting edge is higher than the top surface of the forming panel, and the distance between the top of the first die-cutting edge and the top surface of the second forming ring is equal to the thickness of the gasket to be processed.

[0008] The installation structure of the forming assembly block is as follows: it includes a channel steel base, two parallel roller pins pass through the two ends of the base, and rollers that roll along the roller guide rails are respectively installed at the two ends of the roller pins. A forming panel is installed above the base through fasteners, and a second circular groove is opened on the forming panel. A circular third forming ring is installed in the second circular groove, and a circular second die-cutting blade is installed at the outer diameter of the third forming ring. The top of the second die-cutting blade is higher than the top surface of the forming panel, and the top surface of the third forming ring is lower than the top surface of the forming panel; the cross-section of the third forming ring is a "convex" structure, and a "concave" structure is formed between the upper surface of the "convex" structure and the top of the second die-cutting blade, and the size and shape of the "concave" structure are the same as those of the gasket to be processed.

[0009] The installation structure of the forming roller and the shearing roller is as follows: both ends of the central axis of the forming roller and the shearing roller are fixed on the roller frame through bearing devices, and a clamping spring assembly is installed on the bearing device. The clamping spring assembly presses the forming roller and the shearing roller down through the bearing device respectively, and the roller surfaces of the forming roller and the shearing roller are rolled on the upper surface of the forming block.

[0010] A through hole is opened in the middle of the central axis of the forming roller, and rotary joints are respectively connected to both ends of the central axis of the forming roller. The mold temperature control liquid is introduced into the through hole through the rotary joint.

[0011] The rubber material coming out of the extrusion die is rolled by the forming roller and the shearing roller to form a material strip with a forming gasket. After the forming gasket is removed, the material strip is wound up via a waste reel.

[0012] The structure of the chain transmission device is as follows: it includes two sprockets installed at intervals, and the two sprockets are supported on the bracket through two interval bearing devices respectively. A driving motor is installed on the bracket. The driving motor drives one of the sprockets to rotate through a pulley and a belt, and drives the entire chain transmission device to rotate.

[0013] The waste reel is driven to rotate by a winding motor.

[0014] A gasket forming method of a gasket forming device, the specific steps of which are as follows:

[0015] Step 1: inject mold temperature control liquid into the through hole of the rotating shaft of the forming roller through the rotary joint;

[0016] Step 2: Start the chain transmission device through the drive motor;

[0017] Step 3: Start the extruder, the rubber material flows from the extrusion die to the forming block, the forming block is driven by the roller to the bottom of the forming roller, the forming roller is subjected to the downward pressure of the compression spring assembly, rolls relative to the forming block around its own central axis, and rolls the rubber material on the forming block to form a material strip on the upper surface of the forming panel; the material strip rotates to the bottom of the shearing roller with the roller, the shearing roller is subjected to the downward pressure of the compression spring assembly, and rolls the material strip on the forming panel again, the shearing roller cooperates with the first forming ring, the second forming ring and the first die-cutting edge to cut out a circular gasket on the material strip, or cooperates with the third forming ring and the second die-cutting edge to cut out a "concave" round gasket on the material strip;

[0018] Step 4: When the material belt carrying the formed gasket rolls to the outside of the bracket, the formed gasket on the material belt is unloaded, and the waste belt after the gasket is removed is manually wound onto the waste reel, and the winding motor is started to drive the waste reel to wind the waste belt.

[0019] The beneficial effects of the present invention are as follows:

[0020] The invention has a compact and reasonable structure and is easy to operate. Through the cooperation of a group of smooth rollers and a forming block, the rubber material is rolled and sheared into standard gaskets. The gasket forming quality is high, and waste materials are recycled for secondary use, which improves efficiency and saves costs.

[0021] At the same time, the present invention also has the following advantages:

[0022] 1. The forming roller and the shearing roller of the present invention are fixedly installed. When the rubber material rotates to the bottom of the two rollers with the forming block, the two rollers roll relative to the forming block under the downward pressure of the compression spring, thereby completing the shearing forming of the gasket. The compression spring ensures that the distance between the two rollers and the forming block is constant and the force is uniform during the rolling process.

[0023] 2. The forming assembly blocks of the present invention are designed in two forms. The shearing roller cooperates with the first forming ring and the first die-cutting edge, or cooperates with the third forming ring and the second die-cutting edge, so as to complete the shearing forming of circular gaskets and annular gaskets separately or simultaneously; and the size and structure of the space formed by the first die-cutting edge and the second forming ring, and the size of the space formed between the second die-cutting edge and the third forming ring are the same as the size of the gasket to be processed, and the forming effect is good.

[0024] 3. The roller guide rail of the present invention guides the rollers of the forming block, and the rollers roll along the roller guide rail, ensuring the smooth operation of the transmission chain of the chain transmission mechanism when the forming block receives roller pressure.

[0025] 4. The waste strip of the molded gasket of the present invention is wound onto a waste reel after unloading, which ensures the flatness and uniform thickness of the strip during the entire molding process, facilitates the secondary utilization of the rubber material, and saves resources and costs.

[0026] 5. A through hole is provided in the rotating shaft of the forming roller of the present invention. After the rotating joints installed at both ends of the shaft are connected to the output pipe of the mold temperature control liquid, the mold temperature control liquid is introduced into the through hole to control the temperature of the roller and ensure reliable forming of the gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention.

[0028] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0029] Figure 3 It is a top view of the present invention.

[0030] Figure 4 It is a top view of the forming block of the present invention.

[0031] Figure 5 for Figure 4 sectional view of .

[0032] Figure 6 for Figure 5 Enlarged view of part B in the middle.

[0033] Figure 7 This is a top view of the forming block of the present invention. (Another form)

[0034] Figure 8 for Figure 7 sectional view of .

[0035] Fig. 9 Figure 8 Enlarged view of part C in the middle.

[0036] Fig.10 It is a schematic structural diagram of the molded gasket of the present invention.

[0037] Fig.11 for Fig.10 sectional view of .

[0038] Fig.12 This is a schematic diagram of the structure of the molded gasket of the present invention. (Another form)

[0039] Fig.13 for Fig.12 sectional view of .

[0040] Wherein: 1. extruder; 2. extrusion die; 3. roller frame; 4. compression spring; 5. forming assembly block; 6. bracket; 7. scrap reel; 8. forming roller; 9. shearing roller; 10. roller guide; 11. winding motor; 12. driving motor; 13. rotary joint; 501. roller; 502. base; 503. roller pin; 504. forming panel; 505. first die-cutting edge; 506. first forming ring; 507. third forming ring; 508. second die-cutting edge; 509. second forming ring. DETAILED DESCRIPTION

[0041] The specific implementation of the present invention is described below in conjunction with the accompanying drawings.

[0042] like Figure 1 , Figure 2 and Figure 3 As shown, the gasket forming device of this embodiment includes a bracket 6, on which a chain transmission device is installed, the transmission chain of the chain transmission device is composed of a plurality of evenly arranged forming blocks 5, a support frame 3 is installed on the bracket 6, and roller guide rails 10 cooperating with the transmission chain are symmetrically installed on both sides of the support frame 3, and forming rollers 8 and shearing rollers 9 are installed above the forming block 5 through roller frames; an extruder 1 is installed on one side of the bracket 6, and the extrusion die 2 of the extruder 1 is connected to the upper surface of the forming block 5, and a waste reel 7 is installed on the other side of the bracket 6.

[0043] like Figure 2 and Figure 3 As shown, the installation structure of the forming roller 8 and the shearing roller 9 is as follows: both ends of the central axis of the forming roller 8 and the shearing roller 9 are fixed on the roller frame through bearing devices, and a clamping spring assembly 4 is installed on the bearing device. The clamping spring assembly 4 presses the forming roller 8 and the shearing roller 9 down through the bearing device respectively, and the roller surfaces of the forming roller 8 and the shearing roller 9 are rolled on the upper surface of the forming block 5.

[0044] A through hole is formed in the middle of the central axis of the forming roller 8 , and rotary joints 13 are connected to both ends of the central axis of the forming roller 8 , respectively. The mold temperature control liquid is introduced into the through hole through the rotary joints 13 .

[0045] The rubber material coming out of the extrusion die 2 is rolled by the forming roller 8 and the shearing roller 9 to form a material strip with a forming gasket. The material strip after the forming gasket is removed is wound up via the waste reel 7.

[0046] The structure of the chain transmission device is as follows: it includes two sprockets installed at intervals, and the two sprockets are supported on a bracket 6 through two spaced bearing devices respectively. A drive motor 12 is installed on the bracket 6. The drive motor 12 drives one of the sprockets to rotate through a pulley and a belt, and drives the entire chain transmission device to rotate.

[0047] The waste roll 7 is driven to rotate by a winding motor 11 .

[0048] like Figure 4 , Figure 5 and Figure 6 As shown, the installation structure of the forming block 5 is as follows: it includes a channel steel base 502, two parallel roller pins 503 passing through the two ends of the base 502, and rollers 501 rolling along the roller guide rail 10 are respectively installed at the two ends of the roller pin 503, and a forming panel 504 is installed above the base 502 through fasteners, a first circular groove is opened in the middle of the forming panel 504, and an annular groove is opened on the forming panel 504 on the outer circle of the first circular groove, and a first forming ring 506 flush with the top surface of the forming panel 504 is installed in the first circular groove, and a circular second forming ring 509 is installed in the annular groove, and the top surface height of the second forming ring 509 is lower than the top surface height of the first forming ring 506, and the first die-cutting blade 505 is installed along the inner diameter and outer diameter of the second forming ring 509; the rollers 501 of multiple forming blocks 5 constitute a transmission chain of a chain transmission device, and are meshed with the sprocket of the chain transmission device.

[0049] The top of the first die-cutting edge 505 is higher than the top surface of the molding panel 504, and the distance between the top of the first die-cutting edge 505 and the top surface of the second molding ring 509 is equal to the thickness of the gasket to be processed.

[0050] like Figure 7 , Figure 8 and Fig. 9 As shown, the installation structure of the forming assembly block 5 is as follows: it includes a channel steel base 502, two parallel roller pins 503 passing through the two ends of the base 502, and rollers 501 rolling along the roller guide rail 10 are respectively installed at the two ends of the roller pin 503, and a forming panel 504 is installed above the base 502 through fasteners, and a second circular groove is opened on the forming panel 504, and a circular third forming ring 507 is installed in the second circular groove, and a circular second die-cutting blade 508 is installed at the outer diameter of the third forming ring 507, and the top of the second die-cutting blade 508 is higher than the top surface of the forming panel 504, and the top surface of the third forming ring 507 is lower than the top surface of the forming panel 504; the cross-section of the third forming ring 507 is a "convex" structure, and the upper surface of the "convex" structure and the top of the second die-cutting blade 508 form a "concave" structure, and the size and shape of the "concave" structure are the same as those of the gasket to be processed.

[0051] The specific steps of a gasket forming method of a gasket forming device of this embodiment are as follows:

[0052] Step 1: injecting mold temperature control liquid into the through hole of the rotating shaft of the forming roller 8 through the rotary joint 13;

[0053] Step 2: Start the chain transmission device by driving the motor 12;

[0054] Step 3: Start the extruder 1, the rubber material flows from the extrusion die 2 to the forming block 5, and the forming block 5 is driven by the roller 501 to rotate under the forming roller 8. The forming roller 8 is subjected to the downward pressure of the compression spring assembly 4, and rolls relative to the forming block 5 around its own central axis, and rolls the rubber material on the forming block 5 to form a material belt on the upper surface of the forming panel 504; the material belt rotates with the roller 501 to the bottom of the shearing roller 9, and the shearing roller 9 is subjected to the downward pressure of the compression spring assembly 4 to press the forming panel 504. The material strip on the panel 504 is rolled again, and the shearing roller 9 cooperates with the first forming ring 506, the second forming ring 509 and the first die-cutting edge 505, or cooperates with the third forming ring 507 and the second die-cutting edge 508. The shearing roller 9 is tightly attached to the first die-cutting edge 505 or the second die-cutting edge 508 under the action of the force of the clamping spring assembly 4, thereby cutting out a circular ring gasket on the material strip or cutting out a "concave" circular gasket on the material strip to form the product.

[0055] Step 4: When the material strip carrying the formed gasket rolls to the outside of the bracket 6, the formed gasket on the material strip is unloaded, and the waste tape after the gasket is removed is manually wound onto the waste reel 7, and the winding motor 11 is started to drive the waste reel 7 to wind the waste tape.

[0056] Through the forming method of the gasket forming device, the present invention can separately or simultaneously produce two standard gaskets of different shapes: annular and circular (in an inverted concave structure). The structures of the annular and circular gaskets after forming are respectively as follows: Fig.10 and Fig.11 ,as well as Fig.12 and Fig.13 shown.

[0057] The molding roller and the shearing roller of the present invention are fixedly installed, and the molding roller and the shearing roller are respectively installed with a clamping spring to ensure that the distance between the two rollers and the molding block is constant and the force is uniform during the rolling process; when the rubber material rotates to the bottom of the two rollers with the molding block, the roller guide rail plays a guiding role, and the roller of the molding block rolls along the roller guide rail to ensure the stability of the chain transmission mechanism during the gasket shearing and molding process; a through hole is opened in the rotating shaft of the molding roller, and the rotary joints installed at both ends of the shaft are connected to the output pipe of the mold temperature control liquid, and the mold temperature control liquid is introduced into the through hole to control the temperature of the roller, thereby ensuring the reliable molding of the gasket; the waste strip is wound onto the waste reel to ensure that the thickness of the strip is consistent and the flatness is high, and it is convenient for the secondary utilization of the rubber material, saving resources and costs.

[0058] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A gasket forming device, characterized in that: The invention comprises a bracket (6), a chain transmission device is installed on the bracket (6), the transmission chain of the chain transmission device is composed of a plurality of uniformly arranged forming blocks (5), a support frame (3) is installed on the bracket (6), roller guide rails (10) cooperating with the transmission chain are symmetrically installed on both sides of the support frame (3), and forming rollers (8) and shearing rollers (9) are installed above the forming block (5) through roller frames; an extruder (1) is installed on one side of the bracket (6), an extrusion die (2) of the extruder (1) is connected to the upper surface of the forming block (5), and a waste reel (7) is installed on the other side of the bracket (6); the installation structure of the forming block (5) comprises: A channel steel-shaped base (502), two parallel roller pins (503) passing through the two ends of the base (502), rollers (501) rolling along the roller guide rail (10) are respectively installed at the two ends of the roller pins (503), a forming panel (504) is installed above the base (502) through a fastener, a first circular groove is opened in the middle of the forming panel (504), an annular groove is opened on the forming panel (504) outside the first circular groove, a first forming ring (506) flush with the top surface of the forming panel (504) is installed in the first circular groove, a circular second forming ring (509) is installed in the circular groove, and the second forming ring (50 9) the top surface height is lower than the top surface height of the first molding ring (506), and the first die-cutting blade (505) is installed along the inner diameter and the outer diameter of the second molding ring (509); the rollers (501) of the plurality of molding blocks (5) constitute the transmission chain of the chain transmission device and mesh with the sprockets of the chain transmission device; the installation structure of the molding block (5) is as follows: it includes a channel steel base (502), two parallel roller pins (503) pass through the two ends of the base (502), and the two ends of the roller pins (503) are respectively installed with rollers (501) that roll along the roller guide rail (10), and a molding panel (501) is installed above the base (502) through fasteners. 04), a second circular groove is formed on the molding panel (504), a circular third molding ring (507) is installed in the second circular groove, a circular second die-cutting blade (508) is installed at the outer diameter of the third molding ring (507), the top of the second die-cutting blade (508) is higher than the top surface of the molding panel (504), and the top surface of the third molding ring (507) is lower than the top surface of the molding panel (504); the cross-section of the third molding ring (507) is a "convex" structure, and a "concave" structure is formed between the upper surface of the "convex" structure and the top of the second die-cutting blade (508), and the size and shape of the "concave" structure are the same as those of the gasket to be processed.

2. A gasket forming device as claimed in claim 1, characterized in that: The top of the first die-cutting edge (505) is higher than the top surface of the forming panel (504), and the distance between the top of the first die-cutting edge (505) and the top surface of the second forming ring (509) is equal to the thickness of the gasket to be processed.

3. A gasket forming device as claimed in claim 1, characterized in that: The mounting structure of the forming roller (8) and the shearing roller (9) is as follows: both ends of the central axis of the forming roller (8) and the shearing roller (9) are fixed to the roller frame through bearing devices, and a pressing spring assembly (4) is mounted on the bearing device. The pressing spring assembly (4) presses the forming roller (8) and the shearing roller (9) downward through the bearing device, and the roller surfaces of the forming roller (8) and the shearing roller (9) are rolled on the upper surface of the forming block (5).

4. A gasket forming device as claimed in claim 1, characterized in that: A through hole is provided in the middle of the central axis of the forming roller (8), and rotary joints (13) are respectively connected to both ends of the central axis of the forming roller (8), and a mold temperature control liquid is introduced into the through hole through the rotary joint (13).

5. A gasket forming device as claimed in claim 1, characterized in that: The rubber material coming out of the extrusion die (2) is rolled by a forming roller (8) and a shearing roller (9) to form a material strip with a forming gasket. After the forming gasket is removed, the material strip is wound up via a waste reel (7).

6. A gasket forming device as claimed in claim 1, characterized in that: The chain transmission device has a structure comprising two sprockets installed at intervals, the two sprockets being supported on the bracket (6) respectively via two bearing devices at intervals, a drive motor (12) being installed on the bracket (6), the drive motor (12) driving one of the sprockets to rotate via a pulley and a belt, and driving the entire chain transmission device to rotate.

7. A gasket forming device as claimed in claim 1, characterized in that: The waste reel (7) is driven to rotate by a reeling motor (11).

8. A gasket forming method using the gasket forming device according to claim 1, characterized in that: The specific steps are as follows: The first step is to introduce a mold temperature control liquid into the through hole of the rotating shaft of the forming roller (8) through the rotating joint (13); Step 2: starting the chain transmission device via the drive motor (12); Step 3: Start the extruder (1), the rubber material flows from the extrusion die (2) to the forming block (5), the forming block (5) is driven by the roller (501) to rotate under the forming roller (8), the forming roller (8) is subjected to the downward pressure of the compression spring assembly (4), rolls relative to the forming block (5) around its own central axis, and rolls the rubber material on the forming block (5) to form a material belt on the upper surface of the forming panel (504); the material belt rotates with the roller (501) to Below the shearing roller (9), the shearing roller (9) is subjected to the downward pressure of the compression spring assembly (4) to roll the material strip on the forming panel (504) again, and the shearing roller (9) cooperates with the first forming ring (506), the second forming ring (509) and the first die-cutting edge (505) to cut out a circular gasket on the material strip, or cooperates with the third forming ring (507) and the second die-cutting edge (508) to cut out a "concave" circular gasket on the material strip; Step 4: When the material strip carrying the formed gasket rolls to the outside of the bracket (6), the formed gasket on the material strip is unloaded, and the waste material strip after the gasket is unloaded is manually wound onto the waste reel (7), and the winding motor (11) is started to drive the waste reel (7) to wind the waste material strip.

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