Rubber sealing element preforming device

Abstract

The invention discloses a rubber sealing element pre-forming device, and relates to the technical field of sealing element production, the rubber sealing element pre-forming device comprises an extruder, a fixing block, a limiting plate and a waved plate are fixedly mounted at the extrusion end of the extruder, a rotary cutting mode is adopted to replace a traditional extrusion cutting mode, the rubber sealing element pre-forming device is more suitable for cutting flexible materials, and the production efficiency is improved. Meanwhile, adhesion of rubber blanks can be effectively avoided through the cutter head rotating at a high speed, meanwhile, the reciprocating stroke of a cutting period is shortened through synchronous reverse displacement of the sheath and the cutter head, and the cutting operation effect is improved; a cutting mode of repeatedly and transversely pulling a kitchen knife to improve the efficiency during meat cutting is simulated, the friction force generated when a blade makes contact with the surface of the flexible rubber blank is increased, dispersion and absorption of the flexible rubber blank to cutting potential energy are weakened, and the cutting efficiency and accuracy of the rubber blank are improved in a targeted mode.

Description

Technical Field

[0001] The invention relates to the technical field of seal production, in particular to a rubber seal preforming device. Background Art

[0002] The compression molding method of rubber seals basically includes the steps of mixing, preforming, sintering, cooling, etc. The device used for preforming of rubber seals is a rubber preforming extruder, which mainly includes a rubber extrusion structure and a set of rubber blank cutting structures installed on the head. When the rubber preforming extruder is working, the head is opened, the preheated and rolled rubber material is loaded from the front of the barrel, the head is closed, the extrusion speed and cutting speed are adjusted, and the required rubber blank weight is set. The weight of the rubber blank can be obtained through closed-loop feedback from the computer.

[0003] For example, a rubber seal preforming device with publication number CN221584486U proposes that the cutting structure of the extruder in the prior art is cut at room temperature and is used to cut brittle materials such as plastics. However, since rubber is elastic and sticky, the cutting knife may not cut completely when cutting rubber, requiring multiple cuttings, and the rubber may stick to the cutting knife and remain on the cutting knife, resulting in inconsistent weight of the rubber preforms.

[0004] In fact, there are other problems in the cutting process of preformed rubber blanks for rubber seals. The rubber blanks extruded by the rubber preformed extruder have a certain amount of heat and are in a relatively softened state. The traditional cutting method, including the above-mentioned patented technology, mostly uses blade extrusion to cut and make rubber blanks. Blade extrusion has the advantages of fast cutting speed and high precision when cutting objects with harder materials, but is relatively poor when cutting soft objects. It will produce very large adhesion, and the potential energy of stamping can be easily absorbed and dispersed by the flexible movement of the material. For example, when a household kitchen knife is used to cut meat, if only vertical extrusion is used, it is difficult to cut the meat even with great force. At the same time, when cutting rubber seals, forced extrusion and cutting will make the rubber blank at the slice easily damaged and adhere to the blade, resulting in the blade needing to be cleaned frequently.

[0005] In view of the above problems, it is urgent to carry out innovative design based on the original rubber seal preforming device. Summary of the invention

[0006] The technical solution of the present invention aims at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology. Specifically, the purpose of the present invention is to provide a rubber seal preforming device to solve the traditional cutting method proposed in the above background technology, including the blade extrusion method used in the above patent technology to cut and make rubber blanks. Blade extrusion has the advantages of fast cutting speed and high precision when cutting objects with harder materials, but is relatively poor when cutting soft objects, which will produce very large adhesion, and the potential energy of stamping can be easily absorbed and dispersed by the flexible movement of the material.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rubber sealing preforming device, comprising an extruder, wherein the extrusion end of the extruder is fixedly installed with a fixed block, a limit plate and a corrugated plate, and the upper and lower parts of the extrusion end are respectively installed with a cutter disc that can generate a lateral swing during the rising process and a scabbard that can fall synchronously and can adapt to the lateral swing of the cutter disc.

[0008] Preferably, an upper electric telescopic rod is installed on the upper end of the fixed block, and a top plate is fixed to the telescopic end of the upper electric telescopic rod, and the vertical rod on the lower surface of the top plate slides through the limit plate and the lower end is fixedly connected to the upper surface of the scabbard.

[0009] Preferably, a sheath groove is provided on the opposite surface of the sheath and the blade disc, and the size of the sheath groove is just adapted to the lateral swing amplitude of the blade disc.

[0010] Preferably, a lower electric telescopic rod is installed at the lower end of the fixed block, and a base plate is fixed to the telescopic end of the lower electric telescopic rod, a pin is fixed to the end of the base plate, and a swing plate is movably connected to the end of the pin, and the cutter disc is rotatably connected to the upper end of the swing plate through a rotating shaft.

[0011] Preferably, a movable component is installed between the pin shaft and the swing plate, and the movable component includes a slot and a card plate, and the inner wall of the circular cavity at the lower end of the swing plate is provided with slots at equal angles, one end of the card plate is movably provided inside the slot, and the other end of the card plate is fixed to the outer wall of the pin shaft at the center of the cavity.

[0012] Preferably, a torsion spring is provided between the pin shaft and the cavity groove, and the inner end of the torsion spring is welded to the outer wall of the pin shaft, and the outer end of the torsion spring is fixed to the inner wall of the cavity groove.

[0013] Preferably, a motor is fixedly mounted on the side of the swing plate, and the output end of the motor is fixedly connected to the rotating shaft at the end of the cutter disc.

[0014] Preferably, the wave plate is fixedly connected to the side of the lower electric telescopic rod through a number of evenly arranged special-shaped rods, and the side of the wave plate close to the cutter disc is set as a wavy undulating surface, a cross bar is fixed to the side of the swing plate, and the end of the cross bar is arc-shaped and fits closely with the wavy undulating surface of the wave plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] First, start the motor, and the motor drives the cutter disc to rotate continuously through the rotating shaft. At the same time, the upper electric telescopic rod and the lower electric telescopic rod begin to retract synchronously, and the upper electric telescopic rod drives the top plate to fall at a uniform speed. At the same time, the top plate drives the sheath to fall at a uniform speed at the embryo extrusion end of the extruder and corresponds to the gradually rising rotating cutter disc.

[0017] At the same time, the lower electric telescopic rod retracts synchronously, and pushes the swing plate upward at a uniform speed through the bottom plate and the pin shaft, so that the swing plate drives the rotating cutter disc to rise at a uniform speed. Then, when the swing plate rises, it will synchronously drive the arc end of the cross bar to gradually rise along the wavy surface of the wave plate. Since the surface of the cross bar is designed to be wavy, the vertically rising cross bar will periodically produce a lateral rebound effect on the cross bar, so that the cross bar periodically pushes the swing plate horizontally, and the swing plate is movably connected to the pin shaft through the torsion spring and the cooperation of the card plate and the card slot. Therefore, after being rebounded, the swing plate will deflect slightly on the outer wall of the pin shaft and quickly reset under the reset action of the torsion spring, hit the wavy surface of the wave plate, and be bounced again, so as to cycle, thereby giving the cutter disc that rotates and rises step by step a lateral deflection action, so that the cutter disc swings and rises at a small angle left and right, and finally the cutter disc will stably squeeze the extruded rubber blank into the sheath groove and cut it off.

[0018] The present invention adopts a rotary cutting method to replace the traditional extrusion cutting method, which is more suitable for cutting flexible materials. At the same time, the high-speed rotating knife disc can effectively avoid the adhesion of the rubber blank. At the same time, the synchronous reverse displacement of the scabbard and the knife disc is used to shorten the reciprocating stroke of a cutting cycle, thereby improving the cutting operation effect. In addition, which is also the focus of the present invention: during the rising cutting process of the knife disc, a lateral reciprocating deflection can be generated, simulating the method of repeatedly pulling the kitchen knife horizontally when cutting meat to improve efficiency, thereby increasing the friction force when the blade contacts the surface of the flexible rubber blank, and at the same time weakening the absorption and dispersion of the cutting potential energy of the flexible rubber blank, thereby improving the efficiency and accuracy of cutting the rubber blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a first stereogram of the present invention;

[0020] Figure 2 is a second stereogram of the present invention;

[0021] Figure 3 A three-dimensional diagram of the cutting part of the present invention;

[0022] Figure 4 It is a schematic diagram of the connection structure between the pin shaft and the swing plate of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the sheath groove of the present invention.

[0024] In the figure: 1. extruder; 2. fixed block; 21. upper electric telescopic rod; 22. top plate; 23. limit plate; 3. scabbard; 31. scabbard groove; 4. lower electric telescopic rod; 5. bottom plate; 6. pin shaft; 61. slot; 62. clamping plate; 63. torsion spring; 7. swing plate; 71. motor; 8. knife disc; 9. wave plate; 91. cross bar. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-5 The present invention provides a technical solution: a rubber seal preforming device, including an extruder 1, an extrusion end of the extruder 1 is fixedly installed with a fixed block 2, a limit plate 23 and a corrugated plate 9, and a cutter disc 8 that can generate a lateral swing during the rising process and a scabbard 3 that can fall synchronously and adapt to the lateral swing of the cutter disc 8 are respectively installed above and below the extrusion end.

[0027] An upper electric telescopic rod 21 is installed on the upper end of the fixed block 2, and a top plate 22 is fixed to the telescopic end of the upper electric telescopic rod 21. The vertical rod on the lower surface of the top plate 22 slides through the limit plate 23 and the lower end is fixedly connected to the upper surface of the scabbard 3.

[0028] A sheath groove 31 is formed on the opposite side of the sheath 3 and the blade disc 8 , and the size of the sheath groove 31 is just adapted to the lateral swing amplitude of the blade disc 8 .

[0029] A lower electric telescopic rod 4 is installed at the lower end of the fixed block 2, and a base plate 5 is fixed to the telescopic end of the lower electric telescopic rod 4, a pin shaft 6 is fixed to the end of the base plate 5, and a swing plate 7 is movably connected to the end of the pin shaft 6, and a cutter disc 8 is rotatably connected to the upper end of the swing plate 7 through a rotating shaft.

[0030] A movable component is installed between the pin shaft 6 and the swing plate 7, and the movable component includes a slot 61 and a clamping plate 62. The inner wall of the circular cavity at the lower end of the swing plate 7 is provided with a slot 61 at an equal angle, and one end of the clamping plate 62 is movably provided inside the slot 61, and the other end of the clamping plate 62 is fixed to the outer wall of the pin shaft 6 at the center of the cavity.

[0031] A torsion spring 63 is provided between the pin shaft 6 and the cavity groove, and the inner end of the torsion spring 63 is welded to the outer wall of the pin shaft 6, and the outer end of the torsion spring 63 is fixed to the inner wall of the cavity groove.

[0032] A motor 71 is fixedly mounted on the side of the swing plate 7 , and an output end of the motor 71 is fixedly connected to a rotating shaft at the end of the cutter disc 8 .

[0033] The wave plate 9 is fixedly connected to the side of the lower electric telescopic rod 4 through a number of evenly arranged special-shaped rods, and the side of the wave plate 9 close to the cutter disc 8 is set as a wavy undulating surface, and a cross bar 91 is fixed to the side of the swing plate 7, and the end of the cross bar 91 is arc-shaped and fits well with the wavy undulating surface of the wave plate 9.

[0034] Working principle: When using the rubber seal preforming device, Figure 1 and Figure 2 As shown, the motor 71 is started, and the motor 71 drives the cutter disc 8 to rotate continuously through the rotating shaft. At the same time, the upper electric telescopic rod 21 and the lower electric telescopic rod 4 begin to retract synchronously, and the upper electric telescopic rod 21 drives the top plate 22 to fall at a uniform speed. At the same time, the top plate 22 drives the scabbard 3 to fall at a uniform speed at the material extrusion end of the extruder 1 and corresponds to the gradually rising rotating cutter disc 8.

[0035] At the same time, the lower electric telescopic rod 4 is synchronously retracted to push the swing plate 7 upward at a uniform speed through the bottom plate 5 and the pin shaft 6, so that the swing plate 7 drives the rotating cutter head 8 to rise at a uniform speed. Then, when the swing plate 7 rises, it will synchronously drive the arc-shaped end of the cross bar 91 to gradually rise along the wavy surface of the wave plate 9. Since the surface of the cross bar 91 is designed to be wavy, the vertically rising cross bar 91 will periodically produce a lateral rebound effect on the cross bar 91, so that the cross bar 91 periodically pushes the swing plate 7 horizontally. Figure 4 As shown, the swing plate 7 is movably connected to the pin shaft 6 through the torsion spring 63 and the cooperation of the clamping plate 62 and the clamping groove 61. Therefore, after being bounced off, the swing plate 7 will slightly deflect on the outer wall of the pin shaft 6 and quickly return to the original position under the reset action of the torsion spring 63 to hit the wavy undulating surface of the wave plate 9, and then be bounced off again, and the cycle is repeated, thereby giving the knife disc 8, which is gradually rotating and rising, a lateral deflection action, so that the knife disc 8 swings and rises at a small angle to the left and right, and finally the knife disc 8 will stably squeeze the extruded rubber blank into the sheath groove 31 and cut it off.

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rubber seal preforming device, comprising an extruder (1), characterized in that: The extrusion end of the extruder (1) is fixedly mounted with a fixed block (2), a limit plate (23) and a corrugated plate (9), and the upper and lower parts of the extrusion end are respectively mounted with a cutter disc (8) that can generate a lateral swing during the rising process and a scabbard (3) that can fall synchronously and can adapt to the lateral swing of the cutter disc (8).

2. A rubber seal preforming device according to claim 1, characterized in that: An upper electric telescopic rod (21) is mounted on the upper end of the fixed block (2), and a top plate (22) is fixed to the telescopic end of the upper electric telescopic rod (21); a vertical rod on the lower surface of the top plate (22) slides through a limit plate (23) and the lower end is fixedly connected to the upper surface of the scabbard (3).

3. A rubber seal preforming device according to claim 1, characterized in that: The scabbard (3) and the knife disc (8) are provided with a scabbard groove (31) on the opposite side thereof, and the size of the scabbard groove (31) is just adapted to the lateral swing amplitude of the knife disc (8).

4. A rubber seal preforming device according to claim 1, characterized in that: A lower electric telescopic rod (4) is mounted on the lower end of the fixed block (2), and a bottom plate (5) is fixed to the telescopic end of the lower electric telescopic rod (4), a pin shaft (6) is fixed to the end of the bottom plate (5), and a swing plate (7) is movably connected to the end of the pin shaft (6), and a cutter disc (8) is rotatably connected to the upper end of the swing plate (7) via a rotating shaft.

5. A rubber seal preforming device according to claim 4, characterized in that: A movable component is installed between the pin shaft (6) and the swing plate (7), the movable component comprising a clamping groove (61) and a clamping plate (62), and the inner wall of the circular cavity at the lower end of the swing plate (7) is provided with clamping grooves (61) at equal angles, one end of the clamping plate (62) is movably arranged inside the clamping groove (61), and the other end of the clamping plate (62) is fixed to the outer wall of the pin shaft (6) at the center of the cavity.

6. A rubber seal preforming device according to claim 5, characterized in that: A torsion spring (63) is provided between the pin shaft (6) and the cavity groove, and the inner end of the torsion spring (63) is welded to the outer wall of the pin shaft (6), and the outer end of the torsion spring (63) is fixed to the inner wall of the cavity groove.

7. A rubber seal preforming device according to claim 4, characterized in that: A motor (71) is fixedly mounted on the side of the swing plate (7), and an output end of the motor (71) is fixedly connected to a rotating shaft at the end of the cutter disc (8).

8. A rubber seal preforming device according to claim 4, characterized in that: The wave plate (9) is fixedly connected to the side of the lower electric telescopic rod (4) via a plurality of evenly arranged special-shaped rods, and a side of the wave plate (9) close to the cutter disc (8) is provided with a wave-like undulating surface, a cross bar (91) is fixed to the side of the swing plate (7), and the end of the cross bar (91) is arranged in an arc shape and fits closely with the wave-like undulating surface of the wave plate (9).

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