A riveting machine tool based on umbrella rib automatic processing

Abstract

The application provides a riveting machine tool based on umbrella rib automatic machining, which has high positioning accuracy and strong machining adaptability. The machine tool comprises a workbench for placing workpieces, a base movably connected to the bottom of the workbench for fixing, a lifting frame arranged on the top surface of the base for lifting, a rivet cylinder arranged on the top of the lifting frame for accommodating and conveying rivets, and a riveting head arranged in front of the rivet cylinder for riveting the rivets. The riveting head comprises a positioning column for positioning, a power block arranged on the bottom surface of the positioning column for providing power, a moving groove integrally formed on one side of the power block and slidably connected to the front surface of the rivet cylinder for adjusting the position of the power block, and a contact head embedded in the bottom surface of the power block for contacting and fixing the workpieces and performing pressure riveting.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of umbrella manufacturing, and particularly relates to a riveting machine tool based on automatic processing of umbrella ribs. BACKGROUND

[0002] Riveting is a way of connecting multiple parts by rivets, and axial force is used to drive the rivets into the workpieces, so that the workpieces can be connected in a movable riveting or fixed riveting manner.

[0003] Since the rivet connection requires a large force to be accurately applied between the workpieces, in order to reduce labor intensity and maintain accuracy, a riveting machine tool is usually used to drive the rivets into the workpieces during processing, which has high accuracy and fast processing speed, and can effectively reduce the labor intensity of workers.

[0004] Although the prior art can solve the corresponding technical problems, there are still some defects: when the umbrella rib parts are movably riveted, the connecting holes between the umbrella ribs need to be accurately positioned, and some umbrella ribs are polished and painted with smooth paint on the surface in order to be more beautiful and avoid scratching the umbrella cloth during installation. However, when the polished umbrella ribs are riveted by the riveting machine tool, the surface of the polished umbrella ribs is relatively smooth, so the friction between the umbrella rib parts and the workbench is low when the umbrella rib parts are fed for riveting, and the umbrella rib parts are easily slightly slid on the workbench surface due to inertia and other factors, which further causes poor positioning accuracy between the umbrella rib parts, and it is also difficult to accurately rivet the smooth workpieces, and the adaptability is poor. SUMMARY

[0005] The present application aims to overcome the defects and deficiencies of the prior art, and provides a riveting machine tool based on automatic processing of umbrella ribs, which has high positioning accuracy and strong processing adaptability.

[0006] In order to achieve the above object, the present application adopts the following technical scheme: A riveting machine based on umbrella rib automatic processing, comprising a workbench for placing workpieces, a base for fixing movably connected to the bottom of the workbench, a lifting frame for lifting arranged on the top surface of the base, a rivet cylinder for accommodating and conveying rivets arranged on the top of the lifting frame, a riveting head for riveting rivets arranged in front of the rivet cylinder, the riveting head comprising a positioning column for contacting the extended part of the rivet cylinder and positioning the riveting head, a power block for providing power arranged on the bottom surface of the positioning column, a moving groove for adjusting the position of the power block integrally formed on one side of the power block and slidably connected to the front surface of the rivet cylinder, a contact head embedded in the bottom surface of the power block for contacting the fixed workpiece and performing pressure riveting, the contact head comprising a pressing column embedded in the interior of the power block for pressing the workpiece and the rivet, an upper pressing piece arranged on the bottom surface of the power block and movable relative to the bottom surface of the power block for absorbing pressure, a torsional spring ring embedded in the bottom surface of the upper pressing piece for twisting to generate elastic pressure, a contact block movably clamped on the bottom of the upper pressing piece through the torsional spring ring on the top, the contact block comprising a connecting block for connecting the torsional spring ring, an airflow channel integrally formed in the interior of the connecting block for ventilation, a suction disc arranged on one side of the connecting block and having the bottom end of the airflow channel communicated with each other for adsorbing the workpiece, a pressurizing block embedded in the inner wall of the bottom of the airflow channel for enhancing the pressure of the airflow, an air inlet block arranged on the inner wall of the top of the airflow channel for controlling the flow direction of the airflow, the air inlet block comprising an inward block fixed to the airflow channel and further pressurizing the airflow, a plugging block having the bottom surface in contact with the inner wall of the inward block, a torsion column arranged on the top inner wall of the inward block for supporting the plugging block, the plugging block having the top surface movably opposite to the inner wall of the inward block through the torsion column, and elastic pieces embedded in one side of the torsion column at both ends for providing elastic force.

[0007] Further improvement: The front and rear of the contact head are provided with blocking pieces for blocking splashes.

[0008] Further improvement: The upper pressing piece, the torsional spring ring and the contact block are all provided with two, and the two upper pressing pieces, the torsional spring ring and the contact block are mirror image distributed on both sides of the pressing column.

[0009] Further improvement: The bottom surface of the power block is integrally provided with a groove for allowing the upper pressing piece to freely slide, and a spring is arranged between the top of the upper pressing piece and the inner wall of the groove of the power block.

[0010] Further improvement: The suction disc is an outwardly expanding bucket-shaped structure made of silica gel material, and the inner wall is provided with a plurality of arc-shaped grooves.

[0011] Further improvement: The pressurizing block is a circular block structure with a smooth surface, and the outer edge is provided with two mirror image distributed smooth fin-shaped block structures along the center.

[0012] Further improvement is that the blocking block is a crescent block structure made of polypropylene foam material, and the bottom surface is provided with two groups of water drop-shaped grooves which are mirror image distributed along the center line, and the twist column and the elastic sheet are both provided with two, and the two twist columns and the elastic sheet are mirror image distributed on the top surface of the blocking block.

[0013] After the technical scheme is applied, the application has the beneficial effects that:

[0014] When the application is processed, the contact head is first pressed downward to contact the workpiece, so as to generate an interaction force to press the contact block on the surface of the workpiece, extrude the contact block, make the adsorption disc adhere to the workpiece, extrude the gas through the inner collecting block to discharge, generate a gas pressure difference, and then make the adsorption disc adsorb the workpiece to fix the workpiece, thereby avoiding sliding to make the positioning between the umbrella ribs more accurate during riveting.

[0015] When the application is processed, the contact block can pressurize the surface of the workpiece and adsorb it through the downward pressure, so that the workpiece will not slide and move, and thus the workpiece with a smooth surface can be riveted better, and the adaptability to the workpiece is stronger. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor under the premise of the drawings.

[0017] Figure 1 is a three-dimensional structural schematic view of the riveting machine tool of the present application;

[0018] Figure 2 is a three-dimensional structural schematic view of the riveting head of the present application;

[0019] Figure 3 is a structural schematic view of the contact head in the front view section of the present application;

[0020] Figure 4 is a structural schematic view of the contact block in the front view section of the present application;

[0021] Figure 5 is a structural schematic view of the ventilation block in the front view section of the present application.

[0022] Explanation of reference signs: workbench-1, base-2, lifting frame-3, rivet cylinder-4, riveting head-5, positioning column-51, power block-52, moving groove-53, contact head-54, downward pressing column-A1, upward pressing piece-A2, torsional spring ring-A3, contact block-A4, connecting block-A41, adsorption disc-A42, airflow channel-A43, pressurizing block-A44, aeration block-A45, inward retraction block-B1, torsional column-B2, elastic piece-B3, plugging block-B4. DETAILED DESCRIPTION

[0023] The present application will be further described in conjunction with the drawings and specific embodiments.

[0024] Reference Figures 1-5 The technical solution adopted in the specific embodiment is shown in the drawings: a riveting machine bed based on automatic processing of umbrella ribs, comprising a workbench 1 for placing workpieces, a base 2 movably connected to the bottom of the workbench 1 for fixation, a lifting frame 3 arranged on the top surface of the base 2 for lifting, a rivet cylinder 4 arranged on the top of the lifting frame 3 for containing and transmitting rivets, a riveting head 5 arranged in front of the rivet cylinder 4 for riveting, the riveting head 5 comprising a positioning column 51 for contacting the extended part of the rivet cylinder 4 and positioning the riveting head 5, a power block 52 arranged on the bottom surface of the positioning column 51 for providing power, a moving groove 53 integrally formed on one side of the power block 52 and slidably connected to the front surface of the rivet cylinder 4 for adjusting the position of the power block 52, a contact head 54 embedded in the bottom surface of the power block 52 for contacting and pressing the fixed workpiece, the workpiece is placed on the workbench 1 and pushed inward so that the riveting part aligns with the contact head 54, and then the riveting is performed by the rapid contact of the contact head 54 with the workpiece, the contact head 54 is provided with blocking pieces in front and behind for blocking splashes to avoid splashes during riveting from causing injury to the operator;

[0025] The contact head 54 comprises a pressing column A1 embedded in the power block 52 for pressing the workpiece and rivet, an upper pressing sheet A2 arranged on the bottom surface of the power block 52 and movable relative to the bottom surface of the power block 52 for absorbing pressure, a torsional spring ring A3 embedded in the bottom surface of the upper pressing sheet A2 for generating elastic pressure, a contact block A4 on the top of the upper pressing sheet A2 and movably clamped with the bottom of the upper pressing sheet A2 through the torsional spring ring A3, and a groove arranged on the bottom surface of the power block 52 for allowing the upper pressing sheet A2 to slide freely, wherein a spring is arranged between the top of the upper pressing sheet A2 and the inner wall of the groove of the power block 52. After the workpiece contacts the contact head 54, the upper pressing sheet A2 can be pushed upward, so as to be pressed into the groove of the power block 52 and compress the spring to generate elastic force, so that the upper pressing sheet A2 pushes the contact block A4 downward to tightly press against the surface of the workpiece, and the torsional spring ring A3 is twisted through the pressure and interaction force, so that the contact block A4 can be better aligned with the workpiece and generate greater pressure. The upper pressing sheet A2, the torsional spring ring A3 and the contact block A4 are all provided with two, and the two upper pressing sheets A2, the two torsional spring rings A3 and the two contact blocks A4 are mirror-distributed on both sides of the pressing column A1, so as to further enhance the fixing strength of the workpiece and balance the output force of both sides, thereby avoiding the skew phenomenon in the fixing process.

[0026] The contact block A4 comprises a connecting block A41 for connecting the torsional spring ring A3, an airflow channel A43 integrally formed in the connecting block A41 for air ventilation, an adsorption disc A42 arranged on one side of the connecting block A41 and connected with the bottom end of the airflow channel A43 for adsorbing the workpiece, a pressurizing block A44 embedded in the inner wall of the bottom of the airflow channel A43 for enhancing the pressure of airflow, and a ventilation block A45 arranged on the inner wall of the top of the airflow channel A43 for controlling the flow direction of airflow. After being pressed, the airflow can be quickly extruded to generate an internal and external air pressure difference to firmly adsorb the workpiece by the adsorption disc A42. The adsorption disc A42 is an outwardly expanded bucket-shaped structure made of silica gel material, and the inner wall is provided with a plurality of arc-shaped grooves. Four arc-shaped grooves are arranged in the embodiment to effectively enhance the contact area between the adsorption disc A42 and the workpiece, so that the workpiece is less likely to fall off. The pressurizing block A44 is a circular block structure with smooth surface and two mirror-distributed smooth fin-shaped blocks on the outer edge, which effectively reduces the internal space of the airflow channel A43 and further enhances the pressure of flowing gas.

[0027] Ventilation block A45 includes fixed to the airflow channel A43 and further pressurized airflow inward block B1, the bottom surface and the inner wall of inward block B1 each other fit contact sealing block B4, set in the top of inward block B1 inner wall for supporting sealing block B4 twist column B2, sealing block B4 top surface through twist column B2 and the inner wall of inward block B1 opposite activity, both ends embedded in one side of twist column B2 for providing elastic force elastic sheet B3, when the upward flow of gas, can open sealing block B4, make it with inward block B1 between the gap, and after the gas flow out of the gas pressure decreases by elastic sheet B3 and twist column B2 simultaneously push back again to close, thus make the airflow channel A43 and the outside world produce internal and external pressure difference, sealing block B4 is made of polypropylene foam material crescent block structure, and the bottom surface is provided with two groups of along the midline mirror image distribution of water drop shaped groove, effectively increase the upthrust generated when the airflow up flow, and reduce the weight of sealing block B4, make it more easily be pushed, twist column B2 and elastic sheet B3 are both provided with two, two twist column B2 and elastic sheet B3 mirror image distribution in the top surface of sealing block B4, is beneficial to make the two sides of the push force balance, avoid the push sealing block B4 when producing skew.

[0028] The working principle of the present application: when the present application is used, first, the umbrella rib workpiece to be riveted is placed on the workbench 1, and is pushed inward to the position corresponding to the riveting head 5 of the workbench 1, then the rivet is output through the rivet barrel 4, and the height is adjusted by controlling the lifting frame 3, and the riveting head 5 is started at the appropriate height, the power block 52 outputs downward power to the lower pressing column A1, and then the lower pressing column A1 of the contact head 54 presses the rivet to be riveted into the workpiece, when pressing down, the contact block A4 of the contact head 54 will first contact the workpiece, the interaction force generated by the rapid contact will be transmitted to the contact block A4, and then the upper pressing piece A2 is pushed up, so that it is pressed into the groove of the power block 52, and the spring is compressed to output the elastic force downward, so that the upper pressing piece A2 pushes the contact block A4 downward and tightly presses on the surface of the workpiece, and the torsional spring ring A3 is twisted by pressure and interaction force, so that the torsional ring A3 generates elastic force and changes the angle between the contact block A4 and the upper pressing piece A2, so that the contact block A4 can better align with the workpiece and generate greater pressure, when the contact block A4 contacts the workpiece, the adsorbing disc A42 provided thereon will be deformed and attached to the surface of the workpiece, and at the same time, due to the compression deformation effect of the adsorbing disc A42, the air in the adsorbing disc A42 is squeezed into the airflow channel A43, and after being guided and pressurized by the pressurizing block A44, the air is rapidly impacted on the air flow block A45 to enter the inner collecting block B1 at a high pressure, and the air flow block A45 is moved upward to open the blocking block B4, so that it loses contact with the inner collecting block B1, thereby generating a gap to make the gas flow outward along the airflow channel A43, and the two twisted columns B2 cooperate with the elastic piece B3 to reseal the blocking block B4, thereby avoiding the backflow of external gas, at this time, the air pressure in the airflow channel A43 will be lower than the external air pressure, thereby generating strong suction on the opening of the adsorbing disc A42 attached to the workpiece through the air pressure difference, to adsorb and fix the workpiece, avoiding sliding.

[0029] The present application protects the structure of the product, and the model of each element is not the content protected by the present application, but is a known technology, and any element that can achieve the above-mentioned function of the present application on the market can be used as a selection. Therefore, the model and other parameters of the element are not described in detail in the present application. The contribution of the present application is to scientifically combine each element together.

[0030] The basic principle and main features of the present application and its advantages are shown and described above, and those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions are only to illustrate the principle of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents. The present application is not described in detail, which is the known technology of those skilled in the art.

Claims

1. A riveting machine tool based on automated processing of umbrella ribs, comprising a worktable (1) for placing workpieces, a base (2) movably connected to the bottom of the worktable (1) for fixing, a lifting frame (3) for lifting and lowering disposed on the top surface of the base (2), a rivet cylinder (4) for receiving and transmitting rivets disposed on the top of the lifting frame (3), and a rivet head (5) for driving rivets into place disposed directly in front of the rivet cylinder (4), characterized in that: The riveting head (5) comprises a positioning column (51) for contacting the rivet barrel (4) extension and positioning the riveting head (5), a power block (52) provided at the bottom of the positioning column (51) for providing power, a moving groove (53) integrally formed on one side of the power block (52) and in sliding connection with the front surface of the rivet barrel (4) for adjusting the position of the power block (52), a contact head (54) embedded in the bottom of the power block (52) for contacting the fixed workpiece and performing pressure riveting, the contact head (54) comprising a lower pressing column (A1) embedded in the inside of the power block (52) for pressing the workpiece and the rivet, an upper pressing sheet (A2) provided at the bottom of the power block (52) and movable relative to the bottom of the power block (52) for absorbing pressure, a torsional spring ring (A3) embedded in the bottom of the upper pressing sheet (A2) for torsioning to generate elastic pressure, a contact block (A4) movably clamped at the top of the upper pressing sheet (A2) through the torsional spring ring (A3), the contact block (A4) comprising a connecting block (A41) for connecting the torsional spring ring (A3), an air flow channel (A43) integrally formed in the inside of the connecting block (A41) for air flow, an adsorption disc (A42) provided on one side of the connecting block (A41) and having the bottom in communication with the bottom end of the air flow channel (A43) for adsorbing the workpiece, a pressurizing block (A44) embedded in the inner wall of the bottom of the air flow channel (A43) for enhancing air flow pressure, and a ventilation block (A45) provided on the top inner wall of the air flow channel (A43) for controlling the flow direction of the air flow, the ventilation block (A45) comprising an inner collecting block (B1) fixed to the air flow channel (A43) and further pressurizing the air flow, a blocking block (B4) having the bottom surface in contact with the inner wall of the inner collecting block (B1), a torsion column (B2) provided on the top inner wall of the inner collecting block (B1) for supporting the blocking block (B4), the top surface of the blocking block (B4) movably relative to the inner wall of the inner collecting block (B1) through the torsion column (B2), and elastic sheets (B3) embedded on both sides of the torsion column (B2) for providing elastic force.

2. The machine according to claim 1, wherein: The contact head (54) is provided with blocking sheets in front and back for blocking splashes.

3. The machine according to claim 1, wherein: The upper pressing sheet (A2), the torsional spring ring (A3) and the contact block (A4) are all provided with two, and the two upper pressing sheets (A2), the torsional spring rings (A3) and the contact blocks (A4) are mirror image distributed on both sides of the lower pressing column (A1).

4. The machine according to claim 1, wherein: The bottom of the power block (52) is integrally provided with a groove for allowing the upper pressing sheet (A2) to freely slide, and a spring is arranged between the top of the upper pressing sheet (A2) and the inner wall of the groove of the power block (52).

5. The machine according to claim 1, wherein: The adsorption disc (A42) is an outwardly expanding bucket-shaped structure made of silica gel material, and the inner wall is provided with a plurality of arc-shaped grooves.

6. The machine according to claim 1, wherein: The pressurizing block (A44) is a circular block structure with smooth surface, and the outer edge is provided with two smooth fin-shaped block structures mirror image distributed along the center.

7. The machine according to claim 1, wherein: The blocking block (B4) is a crescent block structure made of polypropylene foam material, and the bottom surface is provided with two groups of water drop-shaped grooves distributed along the center line in mirror image, and the twisted column (B2) and the elastic sheet (B3) are both provided with two, and the two twisted columns (B2) and the elastic sheets (B3) are distributed in mirror image on the top surface of the blocking block (B4).

Images