A special mold for sports parallel bars with automatic adjustment of the position of the covering cloth bucket

Abstract

The present invention relates to a special mold for sports parallel-bar levers that automatically adjusts the position of the cloth bucket for coating, and belongs to the technical field of sports parallel-bar lever equipment processing equipment. Glass fiber thread passing holes are correspondingly arranged on the equalizing mechanism, the inner cloth bucket mechanism, and the glass fiber pulling and winding reinforcing layer mechanism, and the lower part of the inner cloth bucket mechanism, the glass fiber pulling and winding reinforcing layer mechanism and the outer cloth bucket mechanism is correspondingly arranged with a rod fiber forming round tube; the inner cloth bucket mechanism and the outer cloth bucket mechanism are respectively connected to the power output end of the cylinder. The rod core is coated with the cloth bucket mechanism and the fourth part is the outermost layer coated with the cloth bucket mechanism, which is pushed by the cylinder to adjust the distance between the cloth bucket and the uniform winding layer, thereby adjusting the uniformity of the glass fiber wrapping, improving the neatness and uniformity of the product appearance, and improving the appearance quality of the lever. The internal structural strength of the small arc side is increased; stress concentration is reduced to improve the overall strength of the lever.

Description

Technical Field

[0001] The invention relates to a special mould for sports parallel-bar levers capable of automatically adjusting the position of a covering cloth bucket, and belongs to the technical field of sports parallel-bar lever equipment processing equipment. Background Art

[0002] Fiberglass lever is a composite material with glass fiber as reinforcing material and synthetic resin as matrix material. The glass fiber is bonded together with synthetic resin to form a hard rod product with a fixed shape. It can withstand tensile stress, bending, compression and shear stress. The existing processing technology is to produce different shapes of fiberglass pultrusion profiles according to a mold with a certain cross-sectional shape. The pultruded fiberglass products have the characteristics of high strength, corrosion resistance, and high temperature resistance. Glass fiber is an inorganic non-metallic material with excellent performance. The advantages are good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength. It is made of glass balls or waste glass as raw materials through high-temperature melting, wire drawing, winding, weaving and other processes. The diameter of its single filament is a few microns to more than 20 microns, which is equivalent to 1 / 20-1 / 5 of a hair. Each bundle of fiber filaments is composed of hundreds or even thousands of single filaments. Sports equipment formed by pulling and winding glass fibers has strong heat resistance and good corrosion resistance, and its mechanical strength is better than that of conventional metal, plastic and wooden materials, so sports equipment made of fiberglass is widely used.

[0003] In order to accommodate the athletes' comfortable grasp, the cross-section of the parallel bar lever is made into an ellipse with a large circle and a small circle tangent to each other (similar to the cross-section shape of an upright egg). Fatigue tests on single and parallel bar levers produced by conventional drawing and wrapping molds found that after 20,000 fatigue cycles, a reticulation pattern appeared on the small diameter measurement but it did not affect the mechanical properties; when it reached 50,000 times, obvious cracks appeared on the small diameter side, and the service life was not ideal. Summary of the invention

[0004] In order to make up for the deficiencies of the prior art, the present invention provides a special mould for sports parallel bars which can automatically adjust the position of the covering cloth bucket.

[0005] In order to achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0006] A special mould for sports parallel-bar levers with automatic adjustment of cloth-wrapped bucket positions comprises a support frame and a cylinder, wherein an equal distribution mechanism, a rod core-wrapped cloth bucket mechanism, a glass fiber pulling and reinforcing layer mechanism and an outer layer-wrapped cloth bucket mechanism are sequentially arranged on the support frame, glass fiber threading holes are correspondingly arranged on the equal distribution mechanism, the rod core-wrapped cloth bucket mechanism and the glass fiber pulling and reinforcing layer mechanism, and rod fiber forming round tubes are correspondingly arranged at the lower parts of the rod core-wrapped cloth bucket mechanism, the glass fiber pulling and reinforcing layer mechanism and the outer cloth bucket mechanism; the rod core-wrapped cloth bucket mechanism and the outer layer-wrapped cloth bucket mechanism are respectively connected to the power output end of the cylinder.

[0007] Preferably, the core-coated cloth bucket mechanism and the outer-layer-coated cloth bucket mechanism are provided with long cloth holes on the upper part, and the cross-section of the rod fiber forming circular tube corresponding to the core-coated cloth bucket mechanism, the glass fiber winding reinforcement layer mechanism and the outer-layer-coated cloth bucket mechanism is elliptical.

[0008] Preferably, the glass fiber passage holes arranged on the equal distribution mechanism and the rod core covering cloth bucket mechanism are distributed on both sides, and the glass fiber passage holes distributed on the glass fiber pulling and reinforcing layer mechanism are distributed in a ring shape.

[0009] Preferably, a linear slide rail is provided on the support frame, and a slider is correspondingly provided on the linear slide rail. The rod core-covered cloth bucket mechanism and the outer layer-covered cloth bucket mechanism are both provided with a cylinder connecting plate and a slider connecting plate. The cylinder connecting plate is fixed to the cylinder power output end, and the slider connecting plate is fixed to the slider.

[0010] Preferably, a clamping mechanism is provided at the rear of the outer layer covering the cloth bucket mechanism.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are:

[0012] 1. The cloth bucket mechanism for coating the rod core of the present invention and the fourth part for coating the outermost layer can be driven by a cylinder to perform linear motion, which is used to adjust the distance between the cloth bucket and the uniform winding layer, thereby adjusting the uniformity of the glass fiber wrapping, improving the neatness and uniformity of the product appearance, and improving the appearance quality of the lever.

[0013] 2. The glass fiber cloth wrapped with glass fiber yarns is changed from 4 interfaces to 2 interfaces; and the interfaces are designed on the side to avoid the small arc side where stress is concentrated, thus increasing the internal structural strength of the small arc side; reducing stress concentration to improve the overall strength of the lever. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1-Figure 3 It is a schematic diagram of the structure of the present invention.

[0015] Figure 4 It is a schematic diagram of the inner cloth bucket mechanism.

[0016] Figure 5 It is a schematic diagram of the external cloth bucket mechanism.

[0017] The reference numerals of the figures are: 1 equal distribution mechanism, 2 rod core covering cloth bucket mechanism, 3 glass fiber pulling and reinforcing layer mechanism, 4 outer layer covering cloth bucket mechanism, 5 rod core forming round tube 6 cloth hole, 7 glass fiber thread passing hole, 8 cylinder, 9 cylinder connecting plate, 10 clamping mechanism, 11 slide rail. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] Example 1

[0021] The accompanying drawings are a specific embodiment of the present invention. Figure 1-5 shown.

[0022] The entire frame is provided with a rod core glass fiber equalizing mechanism 1, a rod core covering cloth bucket mechanism 2, a glass fiber drawing and strengthening layer mechanism 3, an outer layer covering cloth bucket mechanism 4 and a clamping mechanism 10 in sequence along the direction of glass fiber winding. Glass fiber passing holes 7 are correspondingly provided on the equalizing mechanism 1, the rod core covering cloth bucket mechanism 2 and the glass fiber drawing and strengthening layer mechanism 3, and a rod fiber forming round tube 5 is correspondingly provided at the lower part of the rod core covering cloth bucket mechanism 2, the glass fiber drawing and strengthening layer mechanism 3 and the outer layer covering cloth bucket mechanism 4. The rod core covering cloth bucket mechanism 2 and the outer layer covering cloth bucket mechanism 4 are respectively connected to the cylinder 8, and are controlled by the cylinder solenoid valve to move forward and backward manually.

[0023] In order to reduce stress, the cloth holes 6 of the cloth bucket mechanism 2 covered by the rod core and the cloth bucket mechanism 4 covered by the outer layer are both long strips, which also play a role in smoothing the cloth. The cloth holes 6 are all arranged on the upper part of the cloth bucket mechanism 2 covered by the rod core and the cloth bucket mechanism 4 covered by the outer layer. The inner layer cloth and the outer layer cloth enter through the cloth holes on the upper part of the cloth bucket mechanism 2 covered by the rod core and the cloth bucket mechanism 4 covered by the outer layer respectively, and then enter from the cloth inlet circular hole at the lower end. The circular hole can be arranged in a form in which the cloth inlet end is slightly inclined upward and the outlet is slightly inclined downward to reduce stress. Figure 5 As shown. The multiple glass fiber thread holes 7 on the equal distribution mechanism 1 and the inner cloth bucket mechanism 2 are distributed on both sides of the panel. For further shaping, the glass fiber thread holes 7 on the glass fiber winding reinforcement layer mechanism 3 are circularly distributed in two rows inside and outside. That is, before the outer cloth bucket mechanism 4, the cloth and the glass fiber thread are not in contact. The glass fiber thread and the cloth are pre-shaped separately, and then concentrated into the rod core forming round tube 5 at the lower end of the outer cloth bucket mechanism 4 for unified shaping, and then enter the clamping mechanism 10. The traction force of the whole device is the same as that of the traditional mold. The device is installed as a whole on the complete set of machines, and there is a heating process later. The rest of the structure of the whole set of machines is the existing technology, which will not be repeated in this embodiment.

[0024] For the convenience of control, two linear slide rails 11 are arranged on the support frame, and a slider is arranged on each linear slide rail 11, which are respectively connected to drive the rod core to cover the cloth bucket mechanism 2 and the outer layer to cover the cloth bucket mechanism 4, and a cylinder connecting plate 9 and a slider connecting plate are arranged on the rod core to cover the cloth bucket mechanism 2 and the outer layer to cover the cloth bucket mechanism 4, the cylinder connecting plate 9 is fixed to the cylinder 8, the slider connecting plate is fixed to the slider, and the slider moves on the slide rail.

[0025] The glass fiber yarns are evenly divided and shaped through the round holes on the rod core glass fiber evenly dividing mechanism 1; the glass fiber cloth passes through the cloth bucket through the rod core and enters the rod core forming round tube 5 to form a rod core with the rod core forming rod.

[0026] The middle glass fiber pulling and winding reinforcing layer 3 machine makes the glass fiber pass through the round holes on the reinforcing layer plate so that the glass fiber is evenly divided and then enters the outer layer and is wrapped through the cloth bucket mechanism so that the glass fiber cloth is neatly wrapped on the outermost surface of the glass fiber.

[0027] The glass fiber filaments between the inner glass fiber cloth and the outer glass fiber cloth are mixed with synthetic resin and then formed into the required shape through a high temperature molding section.

[0028] In this embodiment, the rod core coating cloth bucket mechanism is connected to the left and right TN (TDA) double-axis cylinders through the cylinder connecting plate 8, the rod core coating cloth bucket mechanism is connected to the linear slide slider through the slider connecting plate, the cylinder is connected to the air outlet of the two-way five-position solenoid valve through the air pipe, and the air inlet of the two-way five-position solenoid valve is connected to the air filter pressure reducing valve. The on-off control of the two-way five-position solenoid valve controls the cylinder push and return stroke, thereby driving the rod core coating cloth bucket mechanism to move on the linear slide 11, and the movement position of the rod core coating cloth bucket mechanism is controlled to determine the coating uniformity of the glass fiber cloth.

[0029] The movement connection of the outer layer coating bucket mechanism is the same as that of the rod core coating bucket mechanism. The on-off control cylinder of the two-way five-position solenoid valve drives the outer layer coating bucket mechanism to move on the linear slide rail 11, and controls the movement position of the outer layer coating bucket mechanism to determine the uniformity of the glass fiber cloth, glass fiber and mixed coating to improve the appearance and quality.

[0030] The clamping mechanism 10 is composed of upper and lower clamping plates and bolts. The clamping mechanism tightens and fixes the oval tube mold; the oval tube mold is a high-temperature molding section (the highest temperature is about 200°C) that mixes glass fiber and synthetic resin and then forms it through high temperature (the inner glass fiber cloth and the outer glass fiber cloth are a glass fiber yarn mixed structure), which plays a role in molding and controlling size and appearance. This design not only improves the mechanical strength of the lever, but also ensures that the product's external dimensions meet standard requirements.

[0031] The lever mold of the pulling and wrapping equipment is redesigned. This invention changes the original 4 interfaces of the glass fiber cloth wrapped by the glass fiber filaments into 2 interfaces; and the interfaces are designed on the side of the lever to avoid the small arc side where stress is concentrated, thereby increasing the internal structural strength of the small arc side; reducing stress concentration to improve the overall strength of the lever.

[0032] The overall mechanism is divided into the following parts: the first part is the rod core glass fiber evenly dividing mechanism 1, the second part is the rod core covering cloth bucket mechanism to wrap the glass fiber cloth on the inner core, the third part is the middle glass fiber pulling and reinforcing layer mechanism 3 to evenly wind the glass fiber on the inner core wrapping layer, and the fourth part is the outermost layer covering cloth bucket mechanism to neatly wrap the glass fiber cloth on the outermost side.

[0033] The second part is the cloth bucket mechanism for covering the rod core and the fourth part is the outermost layer covering the cloth bucket mechanism which can be pushed by the cylinder 8 to make linear motion, and is used to adjust the distance between the cloth bucket and the uniform winding layer, thereby adjusting the uniformity of the glass fiber wrapping, improving the neatness and uniformity of the product appearance, and improving the appearance quality of the lever. The fifth part is the clamping mechanism 10 composed of upper and lower clamping plates and bolts, and the sixth part is the elliptical tube mold; the entire design not only improves the mechanical strength of the lever but also ensures that the product's appearance and dimensions meet the standard requirements.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A special mold for sports parallel bars with automatic adjustment of the position of the cloth bucket, characterized in that: It comprises a support frame and a cylinder, wherein the support frame is provided with an equal distribution mechanism, a rod core wrapped cloth bucket mechanism, a glass fiber pulling and reinforcing layer mechanism and an outer layer wrapped cloth bucket mechanism in sequence, the equal distribution mechanism, the rod core wrapped cloth bucket mechanism and the glass fiber pulling and reinforcing layer mechanism are provided with glass fiber thread passing holes correspondingly, and the lower parts of the rod core wrapped cloth bucket mechanism, the glass fiber pulling and reinforcing layer mechanism and the outer layer wrapped cloth bucket mechanism are provided with lever fiber forming round tubes correspondingly; the rod core wrapped cloth bucket mechanism and the outer layer wrapped cloth bucket mechanism are respectively connected to the power output end of the cylinder; The rod core wrapped cloth bucket mechanism and the outer layer wrapped cloth bucket mechanism are provided with long strip cloth holes on the upper part, and the cross section of the lever fiber forming circular tube correspondingly provided at the lower part of the rod core wrapped cloth bucket mechanism, the glass fiber pulling and strengthening layer mechanism and the outer layer wrapped cloth bucket mechanism is elliptical; The glass fiber passing holes arranged on the equal distribution mechanism and the rod core covering cloth bucket mechanism are distributed on both sides, and the glass fiber passing holes distributed on the glass fiber pulling and strengthening layer mechanism are distributed in a ring shape.

2. According to the special mold for sports parallel bars with automatic adjustment of the position of the covering cloth bucket according to claim 1, it is characterized in that: The support frame is provided with a linear slide rail, and a slider is correspondingly provided on the linear slide rail. The rod core-covered cloth bucket mechanism and the outer layer-covered cloth bucket mechanism are both provided with a cylinder connecting plate and a slider connecting plate. The cylinder connecting plate is fixed to the cylinder power output end, and the slider connecting plate is fixed to the slider.

3. According to claim 1, the special mold for sports parallel bars with automatic adjustment of the position of the covering cloth bucket is characterized in that: The outer layer covers the cloth bucket mechanism and is provided with a clamping mechanism.

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