A kind of thin-walled pipe fitting rivet automatic internal installation equipment and method

Abstract

The present invention provides an automated rivet installation device for thin-walled pipe fittings, comprising: a support frame; a first synchronous pulley and a second synchronous pulley connected in transmission, respectively installed on the bottom side and the top side of the support frame; a rotary motor installed inside the support frame and connected to the first synchronous pulley; a thin-walled pipe fitting installation device, comprising a supporting outer sleeve and a push-pull mandrel that are arranged in a coordinated manner, the supporting outer sleeve is sleeved in the second synchronous pulley, and the two are connected by interference fit, the rear end of the push-pull mandrel extends out of the second synchronous pulley, and the front end of the push-pull mandrel is a wedge-shaped structure; a push-pull cylinder is installed on the top of the support frame and is arranged in coordination with the rear end of the push-pull mandrel. Through the technical solution of the present invention, it is possible to automatically install rivets into small-diameter thin-walled pipe fittings, and the automatic rivet suction device pre-embeds rivets into the cylindrical through hole of the supporting outer sleeve from the top, which is accurate and convenient, and can realize the simultaneous assembly of rivets on both sides of thin-walled pipe fittings, thereby improving assembly efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of rivet precision assembly, and in particular to an automated internal installation device and method for thin-walled pipe rivets. Background Art

[0002] In the related art, the internal assembly of rivets for thin-walled pipes with small diameters (e.g., the inner diameter of the pipe is 4 mm) is generally done manually with simple tools, and needs to be assembled one by one on one side, which has the following technical defects:

[0003] (1) The assembly efficiency is low, the labor intensity is high, the assembly standardization is low, the stability is poor, and the quality is difficult to guarantee.

[0004] (2) It is impossible to carry out large-scale, batch-based automatic production, which seriously affects production efficiency. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0006] To this end, an object of the present invention is to provide an automated rivet installation device and method for thin-walled pipe fittings. Through a unique design of a thin-walled pipe installation device and a rotating motor driving the first synchronous pulley and the second synchronous pulley to rotate, rivets can be automatically installed in small-diameter thin-walled pipe fittings. In addition, a rotating mechanism is used to enable an automatic rivet suction device to pre-embed rivets in the cylindrical through holes of a supporting outer sleeve from above, which is accurate and convenient, and can realize the simultaneous assembly of rivets on both sides of a thin-walled pipe fitting. It can be applied to large-scale and batch automatic production, greatly improving the assembly quality and production efficiency of rivets installed in thin-walled pipe fittings.

[0007] In order to achieve the above-mentioned purpose, the technical solution of the present invention provides an automated rivet installation equipment for thin-walled pipe fittings, comprising: a support frame; a first synchronous pulley and a second synchronous pulley that are arranged in conjunction with each other, which are respectively installed on the bottom side and the top side of the support frame and are connected through a synchronous belt transmission; a rotary motor that is installed inside the support frame and is connected to the first synchronous pulley; a thin-walled pipe installation device, comprising a supporting sleeve and a push-pull mandrel that are arranged in conjunction with each other, the push-pull mandrel being sleeved inside the supporting sleeve, the supporting sleeve being sleeved inside the second synchronous pulley, and the two being connected by interference fit, the supporting sleeve being provided with a first cylindrical through hole and a second cylindrical through hole that are symmetrical up and down, and a first elastic member that is symmetrical up and down is fixedly installed on the inner side of the front end portion of the supporting sleeve. and a second elastic member, the movable ends of the first elastic member and the second elastic member are respectively connected to the first magnetic member and the second magnetic member, partial structures of the first magnetic member and the second magnetic member are respectively placed in the first cylindrical through hole and the second cylindrical through hole, the rear end of the push-pull mandrel extends out from the second synchronous pulley, and the front end of the push-pull mandrel is a wedge-shaped structure, corresponding to the middle position of the first elastic member and the second elastic member, so as to be inserted into the middle position of the first elastic member and the second elastic member, respectively drive the first magnetic member and the second magnetic member to move outward, and push the rivet out of the first cylindrical through hole and the second cylindrical through hole respectively; a push-pull cylinder is installed on the top of the support frame, and is cooperated with the rear end of the push-pull mandrel to drive the push-pull mandrel forward and backward.

[0008] Preferably, a transition plate is installed at the rear end of the push-pull mandrel, and the transition plate is arranged in cooperation with the push-pull cylinder. The push-pull cylinder contacts the transition plate to push the push-pull mandrel forward, and return springs are installed on both sides of the push-pull cylinder through fixing parts, and the other end of the return spring is connected to the transition plate.

[0009] Preferably, a dovetail groove is provided on the transition plate, which is detachably connected to the push-pull mandrel.

[0010] Preferably, the thin-walled pipe rivet automated internal installation equipment further comprises: a support base, which is slidably connected to the support base frame via a moving slide.

[0011] Preferably, the sum of the heights of the first magnetic component and the second magnetic component is greater than the inner diameter of the supporting sleeve; the heights of the first magnetic component and the second magnetic component are greater than the depths of the first cylindrical through hole and the second cylindrical through hole.

[0012] Preferably, the first magnetic attraction member and the second magnetic attraction member are magnets, and the first elastic member and the second elastic member are springs.

[0013] Preferably, the thin-walled pipe internal installation device further comprises: a plugging piece installed at the front end of the supporting sleeve, the inner end of the plugging piece is clamped with the supporting sleeve, and the outer end of the plugging piece is in a smooth spherical shape.

[0014] Preferably, the wedge-shaped structure gradually narrows from the rear end to the front end, and the width at the front end is smaller than the minimum value of the middle position of the first elastic member and the second elastic member. The length of the wedge-shaped structure is larger than the width of the first magnetic member and the second magnetic member and smaller than the length of the first elastic member and the second elastic member.

[0015] Preferably, the outer diameter of the supporting sleeve is smaller than the inner diameter of the thin-walled tube, and the diameter difference is no more than 0.1 mm.

[0016] The technical solution of the present invention also provides a method for automated internal installation of thin-walled pipe rivets, which uses the automated internal installation equipment for thin-walled pipe rivets in the above technical solution, and includes the following steps:

[0017] The automatic rivet suction device delivers the rivet to the top of the first cylindrical through hole on the supporting sleeve. After the rivet is thrown, the rivet falls into the first cylindrical through hole of the supporting sleeve under its own weight and the suction force of the first magnetic suction member, and the small end of the rivet is lower than the highest point of the first cylindrical through hole on the supporting sleeve.

[0018] Control the rotary motor to drive the first synchronous pulley to rotate, thereby driving the second synchronous pulley and the supporting sleeve to rotate 180 degrees, so that the second cylindrical through hole on the supporting sleeve faces upward;

[0019] The automatic rivet suction device delivers the rivet to the top of the second cylindrical through hole on the supporting sleeve. After the rivet is thrown, the rivet is lowered into the second cylindrical through hole of the supporting sleeve under its own weight and the suction force of the second magnetic suction member, and the small end of the rivet is lower than the highest point of the second cylindrical through hole on the supporting sleeve.

[0020] The feeding equipment sets the thin-walled pipe fittings on the supporting sleeve and transports them to the rivet pre-embedded position;

[0021] The control driving cylinder extends, pushes the transition plate forward, drives the push-pull mandrel forward, and the wedge-shaped structure at the front end of the push-pull mandrel is inserted into the middle position of the first elastic member and the second elastic member. As the wedge-shaped structure is extended, the first elastic member and the second elastic member respectively drive the first magnetic member and the second magnetic member to move outward, and the double-sided rivets are pushed out of the supporting sleeve and inserted into the double-sided holes of the thin-walled pipe fitting.

[0022] Under the cooperation of the auxiliary clamping fingers, the thin-walled pipe is controlled to move toward the rear end of the supporting sleeve to clear the positions of the first cylindrical through hole and the second cylindrical through hole;

[0023] The push-pull cylinder is controlled to retract, the reset spring drives the transition plate to reset, and the push-pull mandrel is reset accordingly, and the first elastic member and the second elastic member respectively drive the first magnetic member and the second magnetic member to reset, thereby completing the assembly of the double-sided rivets;

[0024] The automatic rivet suction device continues to transport rivets to the first cylindrical through hole or the second cylindrical through hole on the supporting sleeve, and sequentially completes the double-sided rivet assembly at other positions of the thin-walled pipe fitting.

[0025] The thin-walled pipe rivet automatic internal installation equipment and method proposed by the present invention have the following beneficial technical effects:

[0026] (1) In the thin-walled pipe fitting automatic internal rivet installation equipment proposed by the present invention, a rotating motor drives the first synchronous pulley and the second synchronous pulley to rotate, thereby driving the supporting sleeve to achieve a 180° flip, so that the automatic rivet suction equipment can embed rivets from the top of the supporting sleeve into the cylindrical through holes on both sides of the supporting sleeve in sequence. The rivet embedding is accurate and convenient, which is conducive to the simultaneous assembly of rivets on both sides of the thin-walled pipe fitting, and can be applied to large-scale and batch automatic production, greatly improving the assembly quality and production efficiency of rivets installed in thin-walled pipe fittings.

[0027] (2) In the thin-walled pipe rivet automatic internal installation equipment proposed by the present invention, a transition plate is installed at the rear end of the push-pull mandrel, and the push-pull cylinder contacts the transition plate, thereby pushing the push-pull mandrel forward, overcoming the mechanical limitation that the push-pull mandrel has a small diameter (generally only 2 mm) and is difficult to directly connect with the push-pull mandrel. Reset springs are installed on both sides of the push-pull cylinder through fixings, and the reset springs are connected to the transition plate. After the push-pull cylinder retreats, the reset spring can drive the transition plate to reset, thereby realizing the reset of the push-pull mandrel. The structure is simple and reliable, and can realize automatic control of the push-pull mandrel, which is conducive to large-scale and batch automatic production.

[0028] (3) In the thin-walled pipe rivet automated internal installation equipment proposed by the present invention, a dovetail groove is arranged on the transition plate, and the dovetail groove and the push-pull mandrel are detachably connected, which facilitates the disassembly and replacement of the push-pull mandrel and has high installation reliability.

[0029] (4) In the thin-walled pipe rivet automated interior installation equipment proposed by the present invention, the support base and the support frame are slidably connected by a moving slide, which is convenient for overall position adjustment of the support frame and the components thereon, has stronger applicability, and is further conducive to realizing large-scale and batch automatic production.

[0030] (5) The thin-walled pipe rivet automated installation equipment proposed in the present invention has a uniquely designed thin-walled pipe installation device. The push-pull mandrel can simultaneously assemble rivets on both sides of a small-diameter thin-walled pipe with one push and pull, greatly improving the efficiency and automation level of thin-walled pipe rivet installation.

[0031] (6) In the thin-walled pipe rivet automated internal installation equipment proposed by the present invention, the rivets are pre-embedded inside the supporting sleeve, and then the through hole on the thin-walled pipe is moved to the top of the rivet, and the push-pull mandrel is controlled to move forward so that the rivet is pushed out and passes through the through hole on the thin-walled pipe, thereby realizing rivet assembly. After the double-sided rivet assembly is completed, the push-pull mandrel is retracted, and the elastic part drives the magnetic part to automatically reset, preparing for the next pre-embedded rivet. Therefore, it can be applied to large-scale and batch automatic production, greatly improving the assembly quality and production efficiency of thin-walled pipe rivets.

[0032] (7) In the thin-walled pipe rivet automatic installation equipment proposed by the present invention, the elastic part and the magnetic part cooperate with each other, which can not only realize the reliable pre-embedding of the rivet, but also automatically reset after the rivet is assembled, thereby ensuring the reliability of the thin-walled pipe rivet installation. In addition, the height of the first magnetic part and the second magnetic part is limited to ensure that the first magnetic part and the second magnetic part are respectively limited in the first cylindrical through hole and the second cylindrical through hole, thereby ensuring the consistency of the ejection and reset paths, and further ensuring the reliability of the thin-walled pipe rivet installation.

[0033] (8) In the thin-walled pipe rivet automated internal installation equipment proposed by the present invention, a sealing piece is installed at the front end of the supporting sleeve. The outer end of the sealing piece is in the shape of a smooth spherical surface. On the one hand, it can protect the component structure inside the supporting sleeve. On the other hand, it is convenient for the auxiliary clamping fingers to put the thin-walled pipe on the supporting sleeve, which is conducive to realizing large-scale and batch automatic production.

[0034] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0036] Figure 1 It shows a schematic structural diagram of an automated internal installation device for thin-walled pipe rivets according to an embodiment of the present invention;

[0037] Figure 2 It shows a schematic diagram of the main structure of a thin-walled pipe rivet automated internal installation device according to an embodiment of the present invention;

[0038] Figure 3 A schematic diagram of the side structure of an automated internal installation device for rivets of thin-walled pipes according to an embodiment of the present invention is shown;

[0039] Figure 4A schematic diagram of the top view of a thin-walled pipe rivet automated internal installation device according to an embodiment of the present invention is shown;

[0040] Figure 5 A schematic cross-sectional view of an automated internal installation device for thin-walled pipe rivets according to an embodiment of the present invention is shown;

[0041] Figure 6 Shows Figure 5 The enlarged structural diagram at A in the middle,

[0042] in, Figures 1 to 6 The corresponding relationship between the reference numerals and the components is as follows:

[0043] 102 supporting frame, 104 first synchronous pulley, 106 second synchronous pulley, 108 synchronous belt, 110 rotating motor, 112 thin-walled pipe internal device, 1122 supporting sleeve, 1122-1 first cylindrical through hole, 1122-2 second cylindrical through hole, 1124 push-pull mandrel, 1124-1 wedge-shaped structure, 1126 first elastic member, 1128 second elastic member, 1130 first magnetic member, 1132 second magnetic member, 1134 blocking member, 114 push-pull cylinder, 116 transition plate, 118 return spring, 120 fixing member, 122 supporting base, 124 moving slide, 126 rivet. DETAILED DESCRIPTION

[0044] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific 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.

[0045] 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 different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0046] Combine the following Figures 1 to 6 An automated internal installation device and method for rivets for thin-walled pipes according to an embodiment of the present invention will be described in detail.

[0047] like Figures 1 to 6As shown, an automated internal installation device for thin-walled pipe rivets according to an embodiment of the present invention includes: a support frame 102, a first synchronous pulley 104, a second synchronous pulley 106, a synchronous belt 108, a rotary motor 110, a thin-walled pipe internal installation device 112, a push-pull cylinder 114, etc. The first synchronous pulley 104 and the second synchronous pulley 106 are arranged in coordination, and are respectively installed on the bottom side and the top side of the support frame 102, and are connected by a synchronous belt 108. The rotary motor 110 is installed inside the support frame 102 and is connected to the first synchronous pulley 104. The rotary motor 110 drives the first synchronous pulley 104 to rotate, thereby driving the synchronous belt 108 to rotate, and then driving the second synchronous pulley 106 to rotate. The thin-walled pipe internal installation device 112 includes a supporting sleeve 1122 and a push-pull mandrel 1124 that are arranged in a coordinated manner. The push-pull mandrel 1124 is sleeved inside the supporting sleeve 1122, and the supporting sleeve 1122 is sleeved inside the second synchronous pulley 106, and the two are connected by interference fit, so that the second synchronous pulley 106 can drive the supporting sleeve 1122 to rotate, and realize a 180° flip of the supporting sleeve 1122. The supporting sleeve 1122 is provided with a first cylindrical through hole 1122-1 and a second cylindrical through hole 1122-2 that are symmetrical up and down. The supporting sleeve 1122 is controlled to flip 180°, and the first cylindrical through hole 1122-1 and the second cylindrical through hole 1122-2 can be swapped in position, and the automatic rivet suction equipment can be used to pre-embed rivets 126 from the top of the supporting sleeve 1122 into the cylindrical through holes on both sides thereof in turn. The pre-embedding of the rivets 126 is accurate and convenient, which is conducive to the simultaneous assembly of the rivets 126 on both sides of the thin-walled pipe. A first elastic member 1126 and a second elastic member 1128 are fixedly installed on the inner side of the front end of the support sleeve 1122, and the movable ends of the first elastic member 1126 and the second elastic member 1128 are respectively connected to the first magnetic member 1130 and the second magnetic member 1132, and the partial structures of the first magnetic member 1130 and the second magnetic member 1132 are respectively placed in the first cylindrical through hole 1122-1 and the second cylindrical through hole 1122-2. In this way, the automatic nail suction device sends the rivet 126 to the first cylindrical through hole 1122-1 or the second cylindrical through hole 1122-2. After the rivet is thrown, the rivet 126 falls into the first cylindrical through hole 1122-1 or the second cylindrical through hole 1122-2 under its own gravity and the suction force of the first magnetic member 1130 or the second magnetic member 1132, and the small end of the rivet 126 is lower than the highest point of the cylindrical through hole of the support sleeve 1122, so that the rivet 126 can be pre-buried. The rear end of the push-pull mandrel 1124 extends out from the second synchronous pulley 106 , and the front end of the push-pull mandrel 1124 is a wedge-shaped structure 1124 - 1 , corresponding to the middle position between the first elastic member 1126 and the second elastic member 1128 .The push-pull cylinder 114 is installed on the top of the support frame 102 and is coordinated with the rear end of the push-pull mandrel 1124, thereby driving the push-pull mandrel 1124 to move forward and backward. The push-pull cylinder 114 drives the push-pull mandrel 1124 to insert into the middle position of the first elastic member 1126 and the second elastic member 1128, and drives the first magnetic member 1130 and the second magnetic member 1132 to move outward respectively, pushing the rivet 126 out of the first cylindrical through hole 1122-1 and the second cylindrical through hole 1122-2 respectively, and inserting it into the thin-walled pipe fitting, thereby realizing the automatic internal installation of the double-sided rivet 126 of the thin-walled pipe fitting. After the push-pull core shaft 1124 returns to its original position, the first elastic member 1126 will drive the first magnetic member 1130 to reset, and the second elastic member 1128 will drive the second magnetic member 1132 to reset, and so on. This cycle is repeated to realize the automated operation of installing rivets 126 into small-diameter thin-walled pipe fittings. The rivets 126 on both sides of the thin-walled pipe fittings are assembled at the same time, which greatly improves the efficiency and automation level of the installation of the rivets 126 for thin-walled pipe fittings, and can be applied to large-scale and batch automatic production, greatly improving the assembly quality and production efficiency of the rivets 126 for thin-walled pipe fittings.

[0048] Furthermore, if Figure 4 and Figure 5 As shown, a transition plate 116 is installed at the rear end of the push-pull mandrel 1124, and the transition plate 116 is arranged in cooperation with the push-pull cylinder 114. The push-pull cylinder 114 contacts the transition plate 116 to push the push-pull mandrel 1124 forward. The two sides of the push-pull cylinder 114 are provided with a reset spring 118 through a fixing member 120, and the other end of the reset spring 118 is connected to the transition plate 116. Thus, the mechanical limitation that the push-pull mandrel 1124 is small in diameter (generally only 2 mm) and difficult to be directly connected to the push-pull mandrel 1124 is overcome. The reset spring 118 is installed on both sides of the push-pull cylinder 114 through a fixing member 120, and the reset spring 118 is connected to the transition plate 116. After the push-pull cylinder 114 is retracted, the reset spring 118 drives the transition plate 116 to reset, thereby realizing the reset of the push-pull mandrel 1124. The structure is simple and reliable, and the push-pull mandrel 1124 can be automatically controlled, which is conducive to large-scale and batch automatic production.

[0049] Furthermore, a dovetail groove is provided on the transition plate 116, which is detachably connected to the push-pull mandrel 1124. Thus, the push-pull mandrel 1124 can be easily disassembled and replaced, and the installation reliability is high.

[0050] Furthermore, if Figures 1 to 5 As shown, the thin-walled pipe rivet automated internal installation equipment also includes: a support base 122, which is slidably connected to the support base frame through a moving slide 124. Therefore, it is convenient to adjust the overall position of the support base frame and the components thereon, which is more applicable and further conducive to realizing large-scale and batch automatic production.

[0051] Furthermore, if Figure 5 and Figure 6 As shown, the sum of the heights of the first magnetic member 1130 and the second magnetic member 1132 is greater than the inner diameter of the support sleeve 1122; the heights of the first magnetic member 1130 and the second magnetic member 1132 are greater than the depths of the first cylindrical through hole 1122-1 and the second cylindrical through hole 1122-2. This ensures that the first magnetic member 1130 and the second magnetic member 1132 are respectively limited in the first cylindrical through hole 1122-1 and the second cylindrical through hole 1122-2, ensuring the consistency of the ejection and reset paths, and further ensuring the reliability of the thin-walled pipe rivet 126.

[0052] Furthermore, the first magnetic attraction member 1130 and the second magnetic attraction member 1132 are magnets, and the first elastic member 1126 and the second elastic member 1128 are springs.

[0053] In addition, the first magnetic attraction member 1130 and the second magnetic attraction member 1132 may also be electromagnets.

[0054] Furthermore, if Figure 5 and Figure 6 As shown, the thin-walled pipe internal installation device 112 also includes: a plugging piece 1134 installed at the front end of the support sleeve 1122, the inner end of the plugging piece 1134 is clamped with the support sleeve 1122, and the outer end of the plugging piece 1134 is in a smooth spherical shape. Therefore, on the one hand, it can protect the component structure inside the support sleeve 1122, and on the other hand, it is convenient for the auxiliary clamping finger to sleeve the thin-walled pipe on the support sleeve 1122, which is conducive to large-scale and batch automatic production.

[0055] Furthermore, if Figure 6As shown, the wedge-shaped structure 1124-1 gradually narrows from the rear end to the front end, and the width at the front end is smaller than the minimum value of the middle position between the first elastic member 1126 and the second elastic member 1128. The length of the wedge-shaped structure 1124-1 is larger than the width of the first magnetic member 1130 and the second magnetic member 1132 and is smaller than the length of the first elastic member 1126 and the second elastic member 1128. Thus, as the push-pull mandrel 1124 advances, it can enter the middle position of the first elastic member 1126 and the second elastic member 1128. As it moves forward, the wedge-shaped structure 1124-1 located in the middle position of the first elastic member 1126 and the second elastic member 1128 gradually widens, gradually pushing the rivet 126 outward, passing through the through hole on the thin-walled pipe fitting, and realizing the assembly of the rivet 126. After the assembly of the double-sided rivet 126 is completed, the wedge-shaped structure 1124-1 retreats as the push-pull mandrel 1124, and the wedge-shaped structure 1124-1 located in the middle position of the first elastic member 1126 and the second elastic member 1128 gradually narrows. The first elastic member 1126 and the second elastic member 1128 respectively drive the first magnetic member 1130 and the second magnetic member 1132 to gradually and automatically reset, with high reliability, thereby ensuring the reliability of the internal installation of the thin-walled pipe fitting rivet 126.

[0056] Furthermore, the outer diameter of the support sleeve 1122 is smaller than the inner diameter of the thin-walled pipe, and the diameter difference is no more than 0.1 mm. Thus, on the one hand, the thin-walled pipe can be conveniently mounted on the support sleeve 1122 by the auxiliary clamping control sleeve, and on the other hand, the rivet 126 can be conveniently inserted through the through hole on the thin-walled pipe after being ejected, so as to realize the assembly of the rivet 126, and further ensure the reliability of the internal installation of the rivets 126 on both sides of the thin-walled pipe.

[0057] According to an embodiment of the present invention, a method for automatically installing rivets in thin-walled pipe fittings comprises the following steps:

[0058] The automatic rivet suction device delivers the rivet to the top of the first cylindrical through hole on the supporting sleeve. After the rivet is thrown, the rivet falls into the first cylindrical through hole of the supporting sleeve under its own weight and the suction force of the first magnetic suction member, and the small end of the rivet is lower than the highest point of the first cylindrical through hole on the supporting sleeve.

[0059] Control the rotary motor to drive the first synchronous pulley to rotate, thereby driving the second synchronous pulley and the supporting sleeve to rotate 180 degrees, so that the second cylindrical through hole on the supporting sleeve faces upward;

[0060] The automatic rivet suction device delivers the rivet to the top of the second cylindrical through hole on the supporting sleeve. After the rivet is thrown, the rivet is lowered into the second cylindrical through hole of the supporting sleeve under its own weight and the suction force of the second magnetic suction member, and the small end of the rivet is lower than the highest point of the second cylindrical through hole on the supporting sleeve.

[0061] The feeding equipment sets the thin-walled pipe fittings on the supporting sleeve and transports them to the rivet pre-embedded position;

[0062] The control driving cylinder extends, pushes the transition plate forward, drives the push-pull mandrel forward, and the wedge-shaped structure at the front end of the push-pull mandrel is inserted into the middle position of the first elastic member and the second elastic member. As the wedge-shaped structure is extended, the first elastic member and the second elastic member respectively drive the first magnetic member and the second magnetic member to move outward, and the double-sided rivets are pushed out of the supporting sleeve and inserted into the double-sided holes of the thin-walled pipe fitting.

[0063] Under the cooperation of the auxiliary clamping fingers, the thin-walled pipe is controlled to move toward the rear end of the supporting sleeve to clear the positions of the first cylindrical through hole and the second cylindrical through hole;

[0064] The push-pull cylinder is controlled to retract, the reset spring drives the transition plate to reset, and the push-pull mandrel is reset accordingly, and the first elastic member and the second elastic member respectively drive the first magnetic member and the second magnetic member to reset, thereby completing the assembly of the double-sided rivets;

[0065] The automatic rivet suction device continues to transport rivets to the first cylindrical through hole or the second cylindrical through hole on the supporting sleeve, and sequentially completes the double-sided rivet assembly at other positions of the thin-walled pipe fitting.

[0066] The present embodiment proposes an automated method for installing rivets in thin-walled pipe fittings. By rotating a first synchronous pulley and a second synchronous pulley to rotate via a rotating motor, rivets can be automatically installed in small-diameter thin-walled pipe fittings. In addition, an automatic rivet suction device pre-embeds rivets in the cylindrical through holes of a supporting sleeve from above. This method is accurate and convenient, and can realize the simultaneous assembly of rivets on both sides of a thin-walled pipe fitting. This method can be applied to large-scale, batch automatic production, and greatly improves the assembly quality and production efficiency of rivets installed in thin-walled pipe fittings.

[0067] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0069] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automated internal installation equipment for thin-walled pipe rivets, characterized in that: include: Support frame; A first synchronous pulley and a second synchronous pulley are respectively installed on the bottom side and the top side of the support frame and are connected through a synchronous belt transmission; A rotary motor, mounted inside the support frame and connected to the first synchronous pulley; The thin-walled pipe internal device comprises a supporting sleeve and a push-pull mandrel which are arranged in a matching manner, the push-pull mandrel is sleeved inside the supporting sleeve, the supporting sleeve is sleeved inside the second synchronous pulley, and the two are connected by interference fit, the supporting sleeve is provided with a first cylindrical through hole and a second cylindrical through hole which are symmetrical up and down, and a first elastic member and a second elastic member which are symmetrical up and down are fixedly installed on the inner side of the front end portion of the supporting sleeve, the movable ends of the first elastic member and the second elastic member are respectively connected to a first magnetic member and a second magnetic member, partial structures of the first magnetic member and the second magnetic member are respectively placed in the first cylindrical through hole and the second cylindrical through hole, the rear end of the push-pull mandrel extends out from the second synchronous pulley, and the front end of the push-pull mandrel is a wedge-shaped structure, corresponding to the middle position of the first elastic member and the second elastic member, so as to be inserted into the middle position of the first elastic member and the second elastic member, and respectively drive the first magnetic member and the second magnetic member to move outward, and push the rivet out of the first cylindrical through hole and the second cylindrical through hole respectively; The push-pull cylinder is installed on the top of the support frame and is matched with the rear end of the push-pull mandrel to drive the push-pull mandrel to move forward and backward.

2. The thin-walled pipe rivet automated internal installation equipment according to claim 1 is characterized in that: A transition plate is installed at the rear end of the push-pull mandrel, and the transition plate is matched with the push-pull cylinder. The push-pull cylinder contacts the transition plate to push the push-pull mandrel forward. Reset springs are installed on both sides of the push-pull cylinder through fixing parts, and the other end of the reset spring is connected to the transition plate.

3. The thin-walled pipe rivet automated internal installation equipment according to claim 2, characterized in that: The transition plate is provided with a dovetail groove, which is detachably connected to the push-pull mandrel.

4. The thin-walled pipe rivet automated internal installation equipment according to any one of claims 1 to 3, characterized in that: Also includes: The support base is slidably connected to the support base frame via a moving slide.

5. The thin-walled pipe rivet automated internal installation equipment according to claim 4, characterized in that: The sum of the heights of the first magnetic attraction member and the second magnetic attraction member is greater than the inner diameter of the supporting sleeve; The heights of the first magnetic attraction component and the second magnetic attraction component are greater than the depths of the first cylindrical through hole and the second cylindrical through hole.

6. The thin-walled pipe rivet automated internal installation equipment according to claim 5, characterized in that: The first magnetic attraction member and the second magnetic attraction member are magnets, and the first elastic member and the second elastic member are springs.

7. The thin-walled pipe rivet automated internal installation equipment according to claim 6, characterized in that: The thin-walled pipe internal device also includes: The blocking piece is installed at the front end of the supporting sleeve, the inner end of the blocking piece is clamped with the supporting sleeve, and the outer end of the blocking piece is in a smooth spherical shape.

8. The thin-walled pipe rivet automated internal installation equipment according to claim 7, characterized in that: The wedge-shaped structure gradually narrows from the rear end to the front end, and the width at the front end is smaller than the minimum value of the middle position of the first elastic member and the second elastic member. The length of the wedge-shaped structure is larger than the width of the first magnetic member and the second magnetic member and smaller than the length of the first elastic member and the second elastic member.

9. The thin-walled pipe rivet automated internal installation equipment according to claim 8, characterized in that: The outer diameter of the supporting sleeve is smaller than the inner diameter of the thin-walled pipe, and the diameter difference is no more than 0.1 mm.

10. A method for automated internal installation of rivets for thin-walled pipe fittings, characterized in that: The thin-walled pipe rivet automated internal installation equipment according to any one of claims 1 to 9 comprises the following steps: The automatic rivet suction device delivers the rivet to the top of the first cylindrical through hole on the supporting sleeve. After the rivet is thrown, the rivet falls into the first cylindrical through hole of the supporting sleeve under its own weight and the suction force of the first magnetic suction member, and the small end of the rivet is lower than the highest point of the first cylindrical through hole on the supporting sleeve. Control the rotary motor to drive the first synchronous pulley to rotate, thereby driving the second synchronous pulley and the supporting sleeve to rotate 180 degrees, so that the second cylindrical through hole on the supporting sleeve faces upward; The automatic rivet suction device delivers the rivet to the top of the second cylindrical through hole on the supporting sleeve. After the rivet is thrown, the rivet is lowered into the second cylindrical through hole of the supporting sleeve under its own weight and the suction force of the second magnetic suction member, and the small end of the rivet is lower than the highest point of the second cylindrical through hole on the supporting sleeve. The feeding equipment sets the thin-walled pipe fittings on the supporting sleeve and transports them to the rivet pre-embedded position; The control driving cylinder extends, pushes the transition plate forward, drives the push-pull mandrel forward, and the wedge-shaped structure at the front end of the push-pull mandrel is inserted into the middle position of the first elastic member and the second elastic member. As the wedge-shaped structure is extended, the first elastic member and the second elastic member respectively drive the first magnetic member and the second magnetic member to move outward, and the double-sided rivets are pushed out of the supporting sleeve and inserted into the double-sided holes of the thin-walled pipe fitting. Under the cooperation of the auxiliary clamping fingers, the thin-walled pipe is controlled to move toward the rear end of the supporting sleeve to clear the positions of the first cylindrical through hole and the second cylindrical through hole; The push-pull cylinder is controlled to retract, the reset spring drives the transition plate to reset, and the push-pull mandrel is reset accordingly, and the first elastic member and the second elastic member respectively drive the first magnetic member and the second magnetic member to reset, thereby completing the assembly of the double-sided rivets; The automatic rivet suction device continues to transport rivets to the first cylindrical through hole or the second cylindrical through hole on the supporting sleeve, and sequentially completes the double-sided rivet assembly at other positions of the thin-walled pipe fitting.

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