Automatic hook assembling and riveting machine

Abstract

The automatic hook assembling and riveting machine comprises a machine table, a rotating disc installed on the machine table, an elastic piece feeding mechanism, a hook body feeding mechanism, an elastic piece aligning mechanism and a rivet feeding and riveting mechanism. The rotary table is rotationally mounted on the machine table around an axis, and a plurality of material loading molds which are distributed around the axis of the rotary table in the circumferential direction at intervals are arranged on the rotary table; according to the invention, the special material loading die is arranged, and the floating elastic needle is adopted to position the hook body and the elastic sheet, so that the process that the rivet body of the rivet is riveted downwards can be realized, and the elastic sheet is prevented from being directly impacted; according to the technical scheme, the elastic pieces are fed in an offset position mode, the elastic pieces are pushed to the inner side of the hook body through the elastic piece aligning mechanism after the hook body is fed, the technical breakthrough is made for the automatic feeding mode of the elastic pieces, the problem that hook parts are difficult to automatically feed is solved, automatic assembling and riveting of hooks are achieved, the production efficiency is remarkably improved, and the production cost is reduced. And meanwhile, the stability and the consistency of the product quality are improved.

Description

Technical Field

[0001] The invention relates to an automatic hook assembly riveting machine. Background Art

[0002] Existing hooks, such as Figure 4 As shown, the hook comprises a hook body 110, a spring clip 120, and a rivet 130. The spring clip 120 is riveted to the hook body 110 via the rivet 130, and pressing the spring clip 120 allows it to elastically open and close. This type of hook typically has a connection hole at the end of the hook body for threading a drawstring, primarily serving as a connector for the drawstrings of safety seats. For example, the upper drawstring assembly and child safety seat for a car child safety seat disclosed in Chinese utility model patent CN218929265U employs a conventional hook or buckle structure as the connector on the drawstring body.

[0003] During production, this type of hook is difficult to automatically load because the spring clip is located inside the hook body. Therefore, it must be manually assembled, placed in a mold with the spring clip positioned above the hook body and the rivet facing upward. Then, a manual riveting machine is used to complete the process. This production method is inefficient and unstable, resulting in a high defect rate. For example, the spring clip may be displaced or deformed by the impact of the riveting force. Furthermore, manual riveting is unsafe. Summary of the Invention

[0004] The present invention proposes an automatic hook assembly riveting machine for assembling and riveting hooks, wherein the hooks include a hook body, a spring piece and a rivet; the automatic hook assembly riveting machine includes a machine platform, a turntable mounted on the machine platform, a spring piece feeding mechanism, a hook body feeding mechanism, a spring piece positioning mechanism and a rivet feeding and riveting mechanism; the turntable is rotatably mounted on the machine platform around an axis, and a plurality of loading molds are arranged on the turntable at intervals around the axis of the turntable; the machine platform is provided with a spring piece feeding station, a hook body feeding station, a rivet feeding station and a rivet pressing station in sequence along the rotation direction of the turntable. The loading die comprises a die base and a floating spring needle; the die base is provided with a first positioning portion and a second positioning portion; the first positioning portion is provided with a needle hole, the outer periphery of the upper end of the needle hole is provided with a sink groove, and the floating spring needle is lifted up and down through the needle hole to switch between an ascending position and a descending position; the second positioning portion is provided with a positioning groove; a temporary placement position is provided on one side of the positioning groove on the second positioning portion; the spring sheet feeding mechanism is used to transport the spring sheet to the loading die that arrives at the spring sheet feeding station; the spring sheet The first end of the sheet is provided with a spring sheet rivet hole, and on the loading die of the spring sheet feeding station, the spring sheet rivet hole of the spring sheet is sleeved on the floating spring needle in the raised position; the second end of the spring sheet is placed in a temporary placement position; the hook body feeding mechanism is used to transport the hook body to the loading die that reaches the hook body feeding station; the first end of the hook body is provided with a hook body rivet hole, and the second end of the hook body is provided with a hook part, and on the loading die of the hook body feeding station, the hook body is located above the spring sheet, the hook body rivet hole of the hook body is sleeved on the floating spring needle in the raised position, and the hook part is inserted into the positioning groove; The spring clip positioning mechanism is used to push the second end of the spring clip in the temporary placement position to the top of the positioning groove, so that the spring clip is located on the inner side of the hook body; the rivet feeding and riveting mechanism is used to transport the rivet to the floating spring pin of the loading die that has arrived at the riveting station and rivet it to fix it; during the riveting process of the rivet feeding and riveting mechanism, the rivet cap faces upward, and the rivet body faces downward to press the floating spring pin, so that the floating spring pin drops to the lowered position and the rivet is then passed through the riveting hole of the hook body and the riveting hole of the spring clip, and the rivet body collides with the sink groove and is deformed and riveted to the spring clip.

[0005] The present invention sets a special loading die and adopts a floating spring to position the hook body and the spring piece, so as to realize the process of riveting the rivet body downward and avoid direct impact on the spring piece; the spring piece of this technical solution adopts offset position loading, and after the hook body is loaded, the spring piece is pushed to the inside of the hook body by the spring piece positioning mechanism. This technical solution has achieved a technical breakthrough in the automatic loading method of the spring piece, solves the problem that the hook parts are difficult to load automatically, realizes the automatic assembly and riveting of the hook, significantly improves the production efficiency, and at the same time improves the stability and consistency of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 This is a top view of the hook automatic assembly riveting machine of the present invention.

[0007] Figure 2 It is a structural schematic diagram of the hook automatic assembly riveting machine of the present invention.

[0008] Figure 3 Schematic diagram of the distribution of workstations on the turntable and the machine platform of the present invention.

[0009] Figure 4 It is a structural schematic diagram of the hook of the present invention.

[0010] Figure 5 It is a structural exploded view of the hook of the present invention.

[0011] Figure 6 It is a structural schematic diagram of the loading mold of the present invention.

[0012] Figure 7 It is a schematic diagram of the matching structure of the spring piece and the loading mold of the present invention.

[0013] Figure 8 It is a schematic diagram of the matching structure of the hook body and the loading mold of the present invention.

[0014] Figure 9 It is a schematic diagram of the matching structure of the hook and the loading mold of the present invention.

[0015] Figure 10 This is a cross-sectional view of the elastic needle limiting assembly of the loading mold of the present invention in the unlocked position.

[0016] Figure 11 This is a cross-sectional view of the elastic needle limiting assembly of the loading mold of the present invention in a locked position.

[0017] Figure 12 It is a cross-sectional exploded view of the loading mold of the present invention.

[0018] Figure 13 It is a structural exploded view of the loading mold of the present invention.

[0019] Figure 14 It is a structural schematic diagram of the discharge track of the shrapnel feeding mechanism of the present invention.

[0020] Figure 15 It is a schematic diagram of the coordination structure of the shrapnel feeding mechanism and the shrapnel transfer mechanism of the present invention.

[0021] Figure 16 It is a structural schematic diagram of the spring transfer mechanism of the present invention at the material receiving position.

[0022] Figure 17 It is a structural schematic diagram of the spring transfer mechanism of the present invention in the transfer position.

[0023] Figure 18 It is a structural schematic diagram of the shrapnel feeding mechanism of the present invention.

[0024] Figure 19 It is a schematic diagram of the coordination structure of the hook feeding mechanism and the hook transfer mechanism of the present invention.

[0025] Figure 20 It is a structural schematic diagram of the hook feeding mechanism of the present invention in an upright position.

[0026] Figure 21 It is a structural schematic diagram of the hook feeding mechanism of the present invention in a flat position.

[0027] Figure 22 It is a structural schematic diagram of the swing seat of the present invention.

[0028] Figure 23 It is a structural schematic diagram of the hook feeding mechanism of the present invention.

[0029] Figure 24 It is a schematic diagram of the coordination structure of the material pressing and fixing mechanism, the spring piece positioning mechanism and the material loading die of the present invention.

[0030] Figure 25 It is a schematic diagram of the rivet feeding and riveting mechanism of the present invention performing riveting operation.

[0031] Figure 26 It is a structural schematic diagram of the discharging structure of the present invention. DETAILED DESCRIPTION

[0032] The present application is further described below with reference to the accompanying drawings:

[0033] See attached Figure 1-26 A hook automatic assembly riveting machine is used to assemble and rivet a hook, wherein the hook 100 includes a hook body 110, a spring piece 120 and a rivet 130; the hook automatic assembly riveting machine is specifically used to assemble the hook body 110, the spring piece 120 and the rivet 130 together and rivet them together.

[0034] The hook automatic assembly riveting machine includes a machine platform 1, a turntable 11 installed on the machine platform 1, a spring feeding mechanism 5, a hook body feeding mechanism 8, a spring positioning mechanism 13, a rivet feeding and riveting mechanism 9, a pressing and fixing mechanism 93 and a discharging mechanism 10.

[0035] The turntable 11 is rotatably mounted on the machine platform 1 around an axis L. A plurality of loading molds 2 are provided on the turntable 11 and are circumferentially spaced around the axis L of the turntable 11 .

[0036] On the machine 1, a spring piece loading station 111, a spring piece detection station 112, a hook body loading station 113, a hook body detection station 114, a riveting station 115, a discharging station 116, and a mold resetting station 117 are sequentially provided along the rotation direction of the turntable 11.

[0037] like Figure 6 As shown, the loading mold 2 includes a mold base 21 and a floating spring pin 24. The mold base 21 is provided with a first positioning portion 22 and a second positioning portion 23. The first positioning portion 22 has a pinhole 251, and a recessed groove 252 is provided around the upper end of the pinhole 251. The floating spring pin 24 is positioned vertically within the pinhole 251 to switch between an ascending position and a descending position. The second positioning portion 23 has a positioning groove 231. A temporary placement position 232 is provided on the second positioning portion 23, on one side of the positioning groove 231.

[0038] The shrapnel loading mechanism 5 is used to transport the shrapnel 120 to the loading mold 2 that arrives at the shrapnel loading station 111; the first end of the shrapnel 120 is provided with a shrapnel rivet hole 121, and on the loading mold 2 of the shrapnel loading station 111, the shrapnel rivet hole 121 of the shrapnel is sleeved on the floating spring pin 24 in the raised position; the second end of the shrapnel 120 is placed in the temporary placement position 232.

[0039] The hook loading mechanism 8 is used to transport the hook body 110 to the loading mold 2 that reaches the hook loading station 113; the first end of the hook body 110 is provided with a hook rivet hole 111, and the second end of the hook body 110 is provided with a hook portion 112. On the loading mold 2 of the hook loading station 113, the hook body 110 is located above the spring piece, the hook rivet hole 111 of the hook body is sleeved on the floating spring pin 24 in the raised position, and the hook portion 112 falls into the positioning groove 231.

[0040] The spring piece positioning mechanism 13 is used to push the second end of the spring piece 120 in the temporary placement position 232 to the top of the positioning groove 231 so that the spring piece is located inside the hook body, that is, to straighten the spring piece so that the second end of the spring piece 120 abuts against the inner side of the hook portion 112.

[0041] The rivet feeding and riveting mechanism 9 is used to transport the rivet 130 to the floating spring pin 24 of the loading die 2 that arrives at the riveting station 115 and rivet it to fix it; during the riveting process of the rivet feeding and riveting mechanism 9, the rivet cap 131 faces upward, and the rivet body 132 presses the floating spring pin 24 downward, causing the floating spring pin 24 to drop to a lowered position, thereby allowing the rivet 130 to pass through the hook body riveting hole 111 and the spring sheet riveting hole 121, and the rivet body 132 collides with the sink 252 to deform and be riveted to the spring sheet.

[0042] This technical solution sets up a special loading die and adopts a floating spring pin 24 to position the hook body and the spring piece, so as to realize the process of riveting the rivet body 132 downward to avoid direct impact on the spring piece; the spring piece of this technical solution adopts offset position loading, and after the hook body is loaded, the spring piece is pushed to the inner side of the hook body by the spring piece positioning mechanism 13. This technical solution has achieved a technical breakthrough in the automatic loading method of the spring piece, solves the problem that the hook parts are difficult to load automatically, realizes the automatic assembly and riveting of the hook, significantly improves production efficiency, and at the same time improves the stability and consistency of product quality.

[0043] The upper end of the floating spring pin 24 is provided with a positioning protrusion 243 for the rivet body 132 to be sleeved. The groove wall of the sink 252 is a first arc-shaped concave surface 2521, and the surrounding wall of the positioning protrusion 243 is a second arc-shaped concave surface 2431; when the floating spring pin 24 is in the lowered position, the positioning protrusion 243 falls into the sink 252 and the second arc-shaped concave surface 2431 is connected with the first arc-shaped concave surface 2521, together forming a riveting groove for riveting and shaping the rivet body 132.

[0044] During the riveting process of this technical solution, the rivet body 132 is positioned on the positioning protrusion 243. The peripheral wall of the positioning protrusion 243 adopts the second arc-shaped concave surface 2431 to transition with the first arc-shaped concave surface 2521 of the groove 252, which can guide the rivet body 132 during deformation, avoiding cracking caused by a sudden change from a straight surface to a curved surface, thereby affecting the riveting quality.

[0045] The first positioning portion 22 is provided with a buffer pad 29 for placing the first end of the spring piece 120 and the hook body 110. During riveting, the spring piece and the hook body rest on the buffer pad 29 to avoid damage by impact and ensure product quality.

[0046] The temporary placement position 232 is provided with a first magnetic member 233 for attracting the second end of the elastic sheet 120 to prevent the elastic sheet from being displaced. The first magnetic member 233 is a magnet.

[0047] The floating elastic needle 24 includes a base 241 and a needle portion 242 located on the base 241; the outer diameter of the base 241 is larger than that of the needle portion 242, and the positioning protrusion 243 is provided at the upper end of the needle portion 242; a travel channel 253 connected to the needle hole 251 is provided in the first positioning portion 22, the needle portion 242 is inserted into the needle hole 251, and the base 241 is located in the travel channel 253; a first elastic return member 27 is provided between the base 241 and the travel channel 253 to keep the floating elastic needle 24 in the ascending position; an upper retaining wall 2531 and a lower retaining wall 211 are provided along the ascending direction of the floating elastic needle 24; when the floating elastic needle 24 is in the ascending position, the base 241 abuts against the upper retaining wall 2531; when the floating elastic needle 24 is in the descending position, the base 241 abuts against the lower retaining wall 211.

[0048] A guide cylinder 25 is embedded in the first positioning portion 22. The needle hole 251, recessed groove 252, and travel channel 253 are provided on the guide cylinder 25. The upper retaining wall 2531 is provided at the connection between the travel channel 253 and the needle hole 251. The first elastic return member 27 is a compression spring. The mold base 21 is provided with a spring hole 212 that communicates with the travel channel 253. The first elastic return member 27 is installed in the spring hole 212. The guide cylinder 25 abuts against the mold base 21. The lower retaining wall 211 is provided at the connection between the travel channel 253 and the spring hole 212. The guide cylinder 25 is made of a stamping-resistant material.

[0049] The floating spring pin 24 of the present technical solution cooperates with the upper retaining wall 2531 and the lower retaining wall 211 through the base 241 to define an ascending position and a descending position.

[0050] The loading mold 2 further includes a spring needle limiting assembly 26; the spring needle limiting assembly 26 can be radially slidably installed in the first positioning portion 22 to switch between a locked position and an unlocked position; when the spring needle limiting assembly 26 is in the unlocked position, the floating spring needle 24 is in the raised position, such as Figure 10 The elastic needle limit assembly 26 when the floating elastic needle 24 reaches the lowered position, switches to the locked position to limit the floating elastic needle 24 from rising, as shown Figure 11 As shown; the hook automatic assembly riveting machine also includes a spring pin reset mechanism 14; on the machine 1, along the rotation direction of the turntable 11, a mold reset station 117 is provided between the discharge station 116 and the spring sheet loading station 111; the spring pin reset mechanism 14 is used to drive the spring pin limit assembly 26 of the loading mold 2 reaching the mold reset station 117 to switch to the unlocked position.

[0051] This technical solution provides a spring pin limiter assembly 26. During the riveting process, when the floating spring pin 24 is in the lowered position, the position of the floating spring pin 24 is locked to limit its upward movement, thereby preventing the riveted hook from being pushed away from the loading die 2 by the floating spring pin 24. Furthermore, a die reset station 117 is provided after the discharge station 116. The spring pin limiter assembly 26 is reset by the spring pin reset mechanism 14, allowing the floating spring pin 24 to return to its raised position, facilitating positioning for the next round of spring piece loading.

[0052] Specifically, the pin-stop assembly 26 includes a locking rod 261, a guide rod 262, and a linkage rod 263. The first positioning portion 22 defines a first mounting hole 221, which communicates with the travel channel 253. The locking rod 261 passes through the first mounting hole 221. When the pin-stop assembly 26 is in the locked position, the locking rod 261 enters the travel channel 253 and abuts against the upper end of the base 241 to prevent the floating pin 24 from rising.

[0053] A second elastic reset member 28 is provided between the locking rod 261 and the first mounting hole 221 to enable the locking rod 261 to pop out into the travel channel 253 ; the locking rod 261 elastically contacts the base 241 of the floating elastic pin 24 when the elastic pin limiting assembly 26 is in the unlocked position.

[0054] The first positioning portion 22 is provided with a second mounting hole 222, and the second mounting hole 222 is connected to the travel channel 253; the first mounting hole 221 and the second mounting hole 222 are respectively arranged on both sides of the travel channel 253 and are coaxially arranged; the guide rod 262 is passed through the second mounting hole 222 and slides and guides along the second mounting hole 222.

[0055] The locking rod 261 is fixed on the first connecting block 264, the first connecting block 264 is located in the first mounting and can slide relative to the first mounting hole 221; the guide rod 262 is fixed on the second connecting block 265, the second connecting block 265 is located in the second mounting hole 222 and can slide relative to the second mounting hole 222; the linkage rod 263 is fixedly connected to the first connecting block 264 and the second connecting block 265, so that the locking rod 261 and the guide rod 262 move synchronously.

[0056] Through holes 254 are provided on both sides of the guide cylinder 25 to connect the first mounting hole 221 and the second mounting hole 222 with the travel channel 253 .

[0057] The elastic needle reset mechanism 14 includes a reset base 142 and a reset push block 141; the reset base 142 is fixed relative to the machine 1, and the reset push block 141 is radially movably installed on the reset base 142 to approach or move away from the mold reset station 117; when the reset push block 141 moves radially toward the mold reset station 117, the second connecting block 265 and / or the linkage rod 263 are pushed to switch the elastic needle limit assembly 26 from the locked position to the unlocked position; a reset drive mechanism 143 for driving the reset push block 141 to move radially is provided between the reset base 142 and the reset push block 141; the reset drive mechanism 143 is a cylinder.

[0058] In this embodiment, the second mounting hole 222 is connected to the outside, one end of the linkage rod 263 extends out of the first positioning portion 22, and the reset push block 141 is provided with a socket for inserting the linkage rod 263. When the reset push block 141 approaches the mold reset station, the linkage rod 263 falls into the socket, and the reset push block 141 can push the second connecting block 265 and the linkage rod 263 at the same time.

[0059] The hook automatic assembly riveting machine also includes a spring feeding mechanism 3 and a spring transfer mechanism 4. The spring transfer mechanism 4 is located between the spring feeding mechanism 3 and the spring loading mechanism 5. The spring feeding mechanism 3 includes a discharge track 31 for conveying the spring 120. The discharge track 31 has a discharge port for conveying the spring 120. The first end of the spring 120 is provided with a folded edge 122. The first end of the hook body is provided with a connecting hole 113. The folded edge 122 is used to abut against the hole wall of the connecting hole 113 for limiting position. The discharge track 31 is provided with a first guide groove 32 extending along its length. The first guide groove 32 corresponds in shape to the folded edge 122. During conveying, the folded edge 122 of the spring falls into the first guide groove 32.

[0060] The spring sheet transfer mechanism 4 includes a transfer fixed seat 41 and a transfer movable seat 42. The transfer fixed seat 41 is fixed to the machine 1, and the transfer movable seat 42 is mounted on the transfer fixed seat 41 so as to be movable along the Y-axis and slide between a material receiving position and a transfer position. A first sliding drive mechanism 47 is provided between the transfer fixed seat 41 and the transfer movable seat 42 for driving the transfer movable seat 42 to move along the Y-axis.

[0061] The transfer movable seat 42 is provided with a loading portion 44, a first positioning pin 45, and a lifting drive mechanism 46. The loading portion 44 is used to accommodate a spring 120; the loading portion 44 is provided with a first longitudinally extending through-hole, and the first positioning pin 45 is inserted into the first through-hole and lifted and lowered, so as to extend or retract into the first through-hole at the top of the loading portion 44; when the first positioning pin 45 extends from the top of the loading portion 44, it is used to penetrate the spring rivet hole 121 of the spring that falls into the loading portion 44 to position the spring 120; the lifting drive mechanism 46 is connected to the first positioning pin 45 and is used to drive the first positioning pin 45 up and down; the lifting drive mechanism 46 is a pneumatic cylinder.

[0062] The transfer fixing seat 41 is provided with a material guide portion 43; the material guide portion 43 is provided with a second guide groove 431 corresponding to the shape of the folded edge 122 and an escape groove 432 for the first positioning needle 45 to pass through; the material guide portion 43 is connected to the discharge port, and the second guide groove 431 is connected to the first guide groove 32.

[0063] When the transfer movable seat 42 is in the material receiving position, one side of the material loading portion 44 is connected to the material outlet and is located below the material guide portion 43. There is a gap between the material loading portion 44 and the material guide portion 43 for the spring sheet to pass through. The other side of the material loading portion 44 is provided with a limit portion 442 for the side of the spring sheet 120 to abut and limit. The spring sheet transfer mechanism 4 is used to receive the spring sheet 120 output from the material outlet and transfer it to the transfer position.

[0064] The shrapnel loading mechanism 5 is used to transport the shrapnel on the transfer movable seat 42 at the transfer position to the loading mold 2 of the shrapnel loading station 111.

[0065] Existing spring-type parts are usually fed by a vibrating feeding tray, but the springs are arranged on the discharge track 31 of the vibrating tray and are difficult to be transported and transferred.

[0066] In this technical solution, a shrapnel transfer mechanism 4 is set between the shrapnel feeding mechanism 3 and the shrapnel loading mechanism 5 to receive and position the shrapnel 120. It is guided by the guide part 43 and positioned by the first positioning needle 45, and is stabilized on the loading part 44, so that the shrapnel loading mechanism 5 can carry it one by one.

[0067] The shrapnel loading mechanism 5 includes a shrapnel loading base 51 and a shrapnel transporting fixture 52; the shrapnel transporting fixture 52 is used to grab and release the shrapnel 120; the shrapnel loading base 51 is fixed on the machine 1; the shrapnel transporting fixture 52 is installed on the shrapnel loading base 51 so as to move along the Y-axis direction, move along the Z-axis direction and rotate around the Z-axis direction; the Z-axis direction is parallel to the axis L of the turntable 11, and the Y-axis direction is perpendicular to the Z-axis direction, that is, the Y-axis is parallel to a radial direction of the turntable 11.

[0068] The shrapnel handling fixture 52 moves along the Y-axis to move back and forth between the shrapnel transfer mechanism 4 and the turntable 11, transferring the shrapnel from the shrapnel transfer mechanism 4 to the loading mold 2 on the turntable 11. The shrapnel handling fixture 52 moves along the Z-axis to move closer to or further from the shrapnel to grip or release it. The shrapnel handling fixture 52 rotates along the Z-axis to offset the shrapnel at a certain angle and place it in the temporary placement position 232.

[0069] A second sliding drive mechanism 54 for driving the shrapnel transport fixture 52 to move along the Y-axis direction, a third sliding drive mechanism 55 for driving the shrapnel transport fixture 52 to move along the Z-axis direction, and a first rotation drive mechanism 56 for driving the shrapnel transport fixture 52 to rotate around the Z-axis direction are provided between the shrapnel loading base 51 and the shrapnel transport fixture 52.

[0070] In this embodiment, the shrapnel handling fixture 52 is a pneumatic claw clamp.

[0071] In this embodiment, the shrapnel feeding mechanism 3 is an existing vibrating feeding tray for conveying shrapnel. The shrapnel feeding mechanism 3 is installed on a shrapnel feeding table 33 on one side of the machine 1.

[0072] The shrapnel detection station 112 is provided with a shrapnel detection probe 15 for detecting whether there is material at the temporary placement position 232 of the loading mold 2 that has reached the shrapnel detection station 112 , that is, whether the shrapnel is in place.

[0073] The hook automatic assembly riveting machine further includes a hook feeding mechanism 6 and a hook transfer mechanism 7; the hook transfer mechanism 7 is located between the hook feeding mechanism 6 and the hook loading mechanism 8. The hook feeding mechanism 6 includes a vertical plate track 61 for feeding the hook 110 upright and hanging therefrom; the vertical plate track 61 extends along the Y-axis; the hook transfer mechanism 7 includes a transfer base 71 and a swing base 72; the transfer base 71 is fixed to the machine platform 1; the swing base 72 is rotatably mounted on the transfer base 71 about the Y-axis to switch between an upright position and a horizontal position.

[0074] The swing seat 72 is provided with a receiving groove 73 for receiving a hook body. The receiving groove 73 is provided with a second magnetic member 74 for adsorbing and fixing the hook body 110 .

[0075] When the swing seat 72 is in the upright position, the receiving groove 73 is connected to the output end of the vertical plate track 61 to receive the hook body output from the vertical plate track 61; when the swing seat 72 is in the horizontal position, it is rotated 90 degrees relative to the upright position so that the hook body in the receiving groove 73 changes from an upright state to a horizontal state, which is convenient for the hook body loading mechanism 8 to carry.

[0076] A swing driving mechanism 75 for driving the swing seat 72 to rotate is provided between the transfer base 71 and the swing seat 72 .

[0077] The hook body loading mechanism 8 is used to transport the hook body 110 on the swing seat 72 in a horizontal position to the loading mold 2 of the hook body loading station 113.

[0078] Specifically, one side of the receiving slot 73 is open for the hook to enter, and the other side of the receiving slot 73 has a side wall for the side surface of the hook 110 to abut against; the second magnetic member 74 is distributed in the side wall.

[0079] The receiving groove 73 is provided with a recessed position 732 for receiving the hook portion 112 of the hook body. When the swing seat 72 is in the horizontal position, the hook portion 112 of the hook body faces downward.

[0080] The swing drive mechanism 75 includes a fixed portion 751 and a rotating portion 752 that rotates relative to the fixed portion 751 ; the fixed portion 751 is mounted on the transfer base 71 , and the swing base 72 is mounted on the rotating portion 752 .

[0081] The hook body transfer mechanism 7 further includes a second positioning pin 76 , which is fixed relative to the transfer base 71 . Specifically, the second positioning pin 76 is fixed on the fixing portion 751 of the swing drive mechanism 75 .

[0082] The swing seat 72 is provided with a second through hole 731 extending through the bottom of the receiving groove 73. The position of the second through hole 731 corresponds to the position of the hook body riveting hole 111. When the swing seat 72 is in a flat position, the second positioning pin 76 is passed through the second through hole 731 in the receiving groove 73 and then can be passed into the hook body riveting hole 111 to position the hook body 110.

[0083] In this embodiment, the swing driving mechanism 75 is a rotary cylinder.

[0084] In this embodiment, the hook feeding mechanism 6 is an existing vibrating feeding tray for feeding hooks. The hook feeding mechanism 6 is installed on a hook feeding table 62 on one side of the machine 1.

[0085] Existing hook-type parts are usually fed by a vibrating feeding tray, but the hook is hooked on the vertical plate track 61 of the vibrating tray to discharge the material in a vertical state, and it is difficult to directly clamp and transport it and place it horizontally to the work station for assembly and riveting.

[0086] In this technical solution, a hook transfer mechanism 7 is provided between the hook feeding mechanism 6 and the hook loading mechanism 8. After receiving the hook 110, it is flipped 90 degrees to facilitate the hook loading mechanism 8 to carry them one by one.

[0087] The hook body loading mechanism 8 includes a hook body loading base 81 and a hook body handling fixture 82; the hook body sheet handling fixture is used to grab and release the hook body 110; the hook body loading base 81 is fixed on the machine 1; the hook body handling fixture 82 is installed on the spring sheet loading base 51 so as to move along an X-axis direction, move along the Z-axis direction, and rotate around the Z-axis direction; the X-axis direction is perpendicular to the Z-axis direction, that is, the X-axis is parallel to a radial direction of the turntable 11.

[0088] In this embodiment, the X-axis direction is perpendicular to the plane where the Y-axis and the Z-axis intersect.

[0089] The hook body transporting fixture 82 moves along the X-axis direction to move back and forth between the hook body transfer mechanism 7 and the turntable 11, and transports the hook body from the hook body transfer mechanism 7 to the loading mold 2 of the turntable 11. The hook body transporting fixture 82 moves along the Z-axis direction to move closer to or away from the hook body to clamp or release the hook body.

[0090] A fourth sliding drive mechanism 83 for driving the hook body transporting fixture 82 to move along the X-axis direction, a fifth sliding drive mechanism 84 for driving the hook body transporting fixture 82 to move along the Z-axis direction, and a second rotation drive mechanism 85 for driving the hook body transporting fixture 82 to rotate around the Z-axis direction are provided between the hook body loading base 81 and the hook body transporting fixture 82.

[0091] In this embodiment, the hook body handling fixture 82 is a pneumatic claw clamp. The receiving groove 73 is provided with an airtight opening for the claw clamp of the hook body handling fixture 82 to extend into.

[0092] The hook body detection station 114 is provided with a hook body detection probe 16 for detecting whether there is material in the positioning groove 231 of the loading mold 2 that reaches the hook body detection station 114 , that is, whether the hook body 110 is in place.

[0093] The press-fixing mechanism 93 includes a press base 931 and an elastic pressing piece 932. The elastic pressing piece 932 is radially movable on the press base 931 to move toward or away from the riveting station 115. During the riveting process of the rivet feeding riveting press, the elastic pressing piece 932 is used to press and secure the hook body on the loading die 2 of the riveting station 115, preventing the hook body and the spring piece from being displaced by the riveting pressure. A press-fixing drive mechanism 933 is provided between the press base 931 and the elastic pressing piece 932 to drive the elastic pressing piece 932 to move radially.

[0094] The spring piece alignment mechanism 13 includes an alignment base and an alignment push block 131. The alignment base is fixed relative to the machine 1, and the alignment push block 131 is radially mounted on the alignment base to move closer to or further away from the riveting station 115. When the alignment push block 131 moves radially toward the riveting station 115, it pushes the second end of the spring piece in the temporary placement position 232 to the top of the positioning groove 231. A positioning block 234 is provided on the other side of the positioning groove 231 opposite the temporary placement position 232. The positioning block 234 is used to provide abutment for the spring piece when the alignment push block 131 pushes the second end of the spring piece, preventing excessive displacement and misalignment.

[0095] A positioning drive mechanism 132 for driving the positioning push block 131 to move radially is provided between the positioning base and the positioning push block 131 .

[0096] In this embodiment, a fixed disk 12 is fixed on the machine 1, and the fixed disk 12 is concentrically arranged with the turntable 11. The outer diameter of the turntable 11 is larger than the fixed disk 12. Each loading mold 2 is located on the turntable 11 outside the fixed disk 12, and the spring positioning mechanism 13 and the spring needle reset mechanism 14 are installed on the fixed disk 12.

[0097] The rivet feeding and riveting mechanism 9 includes a rivet feeding mechanism 91 and a riveting punch 92; the rivet feeding mechanism 91 conveys the rivet 130 to the riveting punch 92, and during the riveting process, the riveting punch 92 punches the rivet into the hook body riveting hole 111 and the spring sheet riveting hole 121, and causes the rivet body 132 to collide with the sink 252 and deform, thereby being riveted to the spring sheet 120.

[0098] The rivet feeding mechanism 91 is a rivet vibrating feeding tray.

[0099] The rivet feeding and riveting mechanism 9 can be an existing automatic feeding riveting machine.

[0100] A discharging platform 105 is provided on one side of the discharging station 116, and the discharging mechanism 10 is used to transport the hook 100 on the loading mold 2 that arrives at the discharging station 116 to the discharging platform 105 for release; the discharging mechanism 10 includes a discharging base 101 and a discharging conveying fixture 102; the discharging conveying fixture 102 is installed on the discharging base 101 so as to move along an X-axis direction and along a Z-axis direction.

[0101] A sixth sliding drive mechanism 103 for driving the discharging conveying fixture 102 to move along the X-axis direction and a seventh sliding drive mechanism 104 for driving the discharging conveying fixture 102 to move along the Z-axis direction are provided between the discharging base and the discharging conveying fixture 102.

[0102] In this embodiment, the first sliding drive mechanism 47, the second sliding drive mechanism 54, the third sliding drive mechanism 55, the fourth sliding drive mechanism 83, the fifth sliding drive mechanism 84, the sixth sliding drive mechanism 103, and the seventh sliding drive mechanism 104 can use existing sliding cylinders or linear sliding modules.

[0103] The mold reset station 117 is provided with a hook detection probe 17 for detecting whether there is material on the loading mold 2 that reaches the mold reset station 117, that is, whether the hook 100 has been moved away from the discharge, to ensure that it does not affect the subsequent re-loading operation.

[0104] The workflow of the present invention is as follows:

[0105] 1. The turntable 11 rotates, the loading mold 2 arrives at the spring piece loading station 111, the spring piece feeding mechanism 3 conveys the spring pieces 120 to the discharge track 31 and arranges them one by one, the transfer movable seat 42 is in the receiving position, connected to the discharge port, as shown in FIG. Figure 15 As shown, the spring piece 120 is received by the loading portion 44. After the spring piece 120 enters the loading portion 44, the first positioning pin 45 extends from the top of the loading portion 44 and is inserted into the spring piece riveting hole 121 to position the spring piece 120; the transfer movable seat 42 transfers the spring piece 120 to the transfer position, as shown in FIG. Figure 17 As shown, at this time, the transfer movable seat 42 is located below the spring piece transporting fixture 52, and the spring piece transporting fixture 52 clamps the spring piece on the loading portion 44 and transports it to the loading mold 2 of the spring piece loading station 111, so that the spring piece riveting hole 121 is sleeved on the floating spring pin 24, and the second end of the spring piece falls into the temporary placement position 232, as shown in FIG. Figure 7 shown.

[0106] 2. The loading mold 2 arrives at the shrapnel detection station 112. After the shrapnel detection probe 15 detects that the shrapnel 120 is in place, the turntable 11 continues to rotate, otherwise subsequent operations are suspended.

[0107] 3. The loading mold 2 arrives at the hook loading station 113, and the hook feeding mechanism 6 transports the hooks 110 to the vertical plate track 61 and hooks and outputs them one by one; the swing seat 72 is in an upright position and connected to the vertical plate track 61 to receive the hooks 110, as shown in FIG. Figure 19 As shown, the swing seat 72 is then rotated to the horizontal position, as shown in FIG. Figure 21 As shown, the second positioning pin 76 is inserted into the hook body riveting hole 111 for positioning; the hook body transporting fixture 82 clamps the hook body on the swing seat 72 and transports it to the loading mold 2 of the hook body loading station 113, so that the hook body riveting hole 111 is sleeved on the floating elastic pin 24, and the hook portion 112 of the hook body falls into the positioning groove 231 as shown. Figure 8 shown.

[0108] 4. The loading mold 2 arrives at the hook detection station 114. After the hook detection probe 16 detects that the hook 110 is in place, the turntable 11 continues to rotate, otherwise subsequent operations are suspended.

[0109] 5. The loading die 2 arrives at the riveting station 115, and the elastic pressing piece 932 of the pressing and fixing mechanism 93 presses against the hook body 110; the positioning push block 131 of the spring piece positioning mechanism 13 pushes the second end of the spring piece 120 to the top of the positioning groove 231, so that the second end of the spring piece 120 abuts against the inner side of the hook portion 112; the rivet feeding and riveting mechanism 9 delivers the rivet 130 to the floating spring pin 24 of the loading die 2 arriving at the riveting station 115 and rivets it to fix it. Figure 9 and Figure 25 shown.

[0110] 6. The loading mold 2 arrives at the discharge station 116 ; the discharge handling fixture 102 of the discharge mechanism 10 clamps the finished hook on the loading mold 2 and transports it to the discharge platform 105 .

[0111] 7. The loading mold 2 reaches the mold reset station 117; the reset push block 141 of the spring needle reset mechanism 14 pushes the spring needle limit assembly 26 of the loading mold 2 to switch to the unlocked position, so that the floating spring needle 24 is reset; at the same time, the hook detection probe 17 detects whether there is hook material on the loading mold 2. If there is no load, it can continue to rotate to the spring piece loading station 111. If there is material, the subsequent operation is suspended.

[0112] 8. Repeat the above steps.

[0113] The above preferred embodiments should be regarded as examples of the implementation methods of the present application scheme. Any technical deductions, replacements, improvements, etc. that are identical or similar to the present application scheme or made based on it should be regarded as within the scope of protection of this patent.

Claims

1. A hook automatic assembly riveting machine, characterized by: Used for assembling and riveting a hook, the hook comprising a hook body, a spring piece and a rivet; The hook automatic assembly riveting machine includes a machine platform, a turntable mounted on the machine platform, a spring feeding mechanism, a hook body feeding mechanism, a spring positioning mechanism, and a rivet feeding and riveting mechanism; The turntable is mounted on the machine platform so as to rotate around an axis, and a plurality of loading dies are arranged on the turntable at intervals around the axis of the turntable. On the machine platform, a spring sheet loading station, a hook body loading station, a riveting station and a discharging station are provided along the rotation direction of the turntable; The loading die includes a die base and a floating spring pin; the die base is provided with a first positioning portion and a second positioning portion; The first positioning portion is provided with a pinhole, and the periphery of the upper end of the pinhole is provided with a sink groove, and the floating elastic needle is lifted up and down through the pinhole to switch between an ascending position and a descending position; The second positioning portion is provided with a positioning groove; a temporary placement position is provided on the second positioning portion at one side of the positioning groove; The shrapnel feeding mechanism is used to transport the shrapnel to the loading die at the shrapnel feeding station; the first end of the shrapnel is provided with a shrapnel rivet hole, and on the loading die at the shrapnel feeding station, the shrapnel rivet hole of the shrapnel is sleeved on the floating spring needle in the raised position; the second end of the shrapnel is placed in a temporary placement position; The hook loading mechanism is used to transport the hook body to the loading die at the hook loading station; the first end of the hook body is provided with a hook body rivet hole, and the second end of the hook body is provided with a hook portion. On the loading die of the hook loading station, the hook body is located above the spring piece, the hook body rivet hole of the hook body is sleeved on the floating spring needle in the raised position, and the hook portion is inserted into the positioning groove; The spring piece positioning mechanism is used to push the second end of the temporarily placed spring piece to the top of the positioning groove so that the spring piece is located inside the hook body; The rivet feeding and riveting mechanism is used to transport the rivet to the floating spring pin of the loading die that has arrived at the riveting station and rivet it to fix it; during the riveting process of the rivet feeding and riveting mechanism, the rivet cap faces upward, and the rivet body faces downward to press the floating spring pin, causing the floating spring pin to drop to a lowered position and then allowing the rivet to pass through the hook body riveting hole and the spring sheet riveting hole, and the rivet body collides with the sink groove to deform and be riveted to the spring sheet.

2. The hook automatic assembly riveting machine according to claim 1, characterized in that: The upper end of the floating spring pin is provided with a positioning protrusion for the rivet body to be sleeved, the groove wall of the sink is a first arc-shaped concave surface, and the surrounding wall of the positioning protrusion is a second arc-shaped concave surface; when the floating spring pin is in the lowered position, the positioning protrusion falls into the sink and the second arc-shaped concave surface is connected to the first arc-shaped concave surface; The first positioning portion is provided with a buffer pad for placing the spring piece and the first end of the hook body; The temporary placement position is provided with a first magnetic member for adsorbing the second end of the elastic sheet.

3. The hook automatic assembly riveting machine according to claim 2, characterized in that: The floating elastic needle includes a base and a needle portion located on the base; the outer diameter of the base is larger than the needle portion, and the positioning protrusion is provided at the upper end of the needle portion; A travel channel communicating with the needle hole is provided in the first positioning portion, the needle portion is inserted into the needle hole, and the base portion is located in the travel channel; A first elastic reset member is provided between the base and the travel channel to keep the floating spring needle in the raised position; An upper retaining wall and a lower retaining wall are provided along the lifting direction of the floating elastic needle; when the floating elastic needle is in the rising position, the base abuts against the upper retaining wall; when the floating elastic needle is in the descending position, the base abuts against the lower retaining wall.

4. The hook automatic assembly riveting machine according to claim 3, characterized in that: The loading mold further includes a spring pin limiting assembly; The elastic needle limiting assembly is radially slidably mounted in the first positioning portion to switch between a locked position and an unlocked position; when the elastic needle limiting assembly is in the unlocked position, the floating elastic needle is in the ascending position; when the floating elastic needle reaches the descending position, the elastic needle limiting assembly switches to the locked position to restrict the floating elastic needle from ascending; The spring pin limiting assembly switches from an unlocked position to a locked position when the loading die reaches the riveting station for riveting operation; The hook automatic assembly riveting machine also includes a spring needle reset mechanism; on the machine platform, a mold reset station is provided between the discharge station and the spring piece loading station along the rotation direction of the turntable; the spring needle reset mechanism is used to drive the spring needle limit assembly of the loading mold that reaches the mold reset station to switch to the unlocked position.

5. The hook automatic assembly riveting machine according to claim 4, characterized in that: The elastic needle limiting assembly includes a locking rod, a guide rod and a linkage rod; The first positioning portion is provided with a first mounting hole, which is communicated with the travel channel; the locking rod is inserted into the first mounting hole, and when the spring pin limit assembly is in the locked position, the locking rod enters the travel channel and abuts against the upper end of the base to limit the upward movement of the floating spring pin; A second elastic reset member is provided between the locking rod and the first mounting hole to enable the locking rod to pop out into the travel channel; the locking rod is in elastic contact with the base of the floating elastic pin when the elastic pin limit assembly is in the unlocked position; The first positioning portion is provided with a second mounting hole, the second mounting hole being in communication with the travel channel; the first mounting hole and the second mounting hole are respectively provided on both sides of the travel channel; the guide rod is passed through the second mounting hole and slides along the second mounting hole; The locking rod is fixed to the first connecting block, the first connecting block is located in the first mounting hole and can slide relative to the first mounting hole; the guide rod is fixed to the second connecting block, the second connecting block is located in the second mounting hole and can slide relative to the second mounting hole; the linkage rod is fixedly connected to the first connecting block and the second connecting block, so that the locking rod and the guide rod move synchronously; The spring needle reset mechanism includes a reset base and a reset push block; the reset base is fixed relative to the machine, and the reset push block is radially movably installed on the reset base to approach or move away from the mold reset position; when the reset push block moves radially toward the mold reset position, the second connecting block and / or the linkage rod is pushed to switch the spring needle limit assembly from the locked position to the unlocked position; a reset drive mechanism for driving the reset push block to move radially is provided between the reset base and the reset push block.

6. The hook automatic assembly riveting machine according to claim 5, characterized in that: It also includes a shrapnel feeding mechanism and a shrapnel transfer mechanism, wherein the shrapnel transfer mechanism is located between the shrapnel feeding mechanism and the shrapnel loading mechanism; The shrapnel feeding mechanism includes a discharge track for conveying the shrapnel, and the discharge track has a discharge port for discharging the shrapnel; The first end of the spring piece is provided with a folded edge, and the discharge track is provided with a first guide groove extending along the length direction thereof, and the first guide groove corresponds to the shape of the folded edge; The shrapnel transfer mechanism includes a transfer fixed seat and a transfer movable seat; The transfer fixed seat is fixed on the machine platform, and the transfer movable seat is movably installed on the transfer fixed seat along a Y-axis direction to slide between a material receiving position and a transfer position; The transfer movable seat is provided with a loading portion, a first positioning needle and a lifting drive mechanism; The loading portion is used to place a spring piece; a first through-hole extending longitudinally is provided on the loading portion, and the first positioning pin is inserted into the first through-hole in a manner of being lifted and lowered, so as to extend from or retract into the first through-hole at the top of the loading portion; when the first positioning pin extends from the top of the loading portion, it is used to penetrate into the spring piece riveting hole of the spring piece that falls into the loading portion; the lifting drive mechanism is connected to the first positioning pin, so as to drive the first positioning pin to move up and down; The transfer fixing seat is provided with a material guide portion; the material guide portion is provided with a second guide groove corresponding to the folded edge shape and an escape groove for the first positioning needle to pass through; the material guide portion is connected to the discharge port, and the second guide groove is connected to the first guide groove; When the transfer movable seat is in the material receiving position, the material loading portion is connected to the material discharge port and is located below the material guiding portion, and there is a gap between the material loading portion and the material guiding portion for the spring to pass through; The spring piece transfer mechanism is used to receive the spring pieces output from the discharge port and transfer them to the transfer position; The shrapnel feeding mechanism is used to transport the shrapnel on the transfer movable seat in the transfer position to the loading mold of the shrapnel feeding station.

7. The hook automatic assembly riveting machine according to claim 6, characterized in that: The shrapnel feeding mechanism includes a shrapnel feeding base and a shrapnel handling fixture; The shrapnel handling fixture is used to grab and release the shrapnel; The spring piece feeding base is fixed on the machine table; the spring piece handling fixture is installed on the spring piece feeding base so as to move along the Y-axis direction, move along the Z-axis direction and rotate around the Z-axis direction; The Z-axis direction is parallel to the axis of the turntable, and the Y-axis direction is perpendicular to the Z-axis direction.

8. The hook automatic assembly riveting machine according to claim 7, characterized in that: It also includes a hook body feeding mechanism and a hook body transfer mechanism; the hook body transfer mechanism is located between the hook body feeding mechanism and the hook body loading mechanism; The hook feeding mechanism includes a vertical plate track for the hook body to be hung upright and output; the vertical plate track extends along the Y-axis direction; The hook transfer mechanism includes a transfer base and a swing base; the transfer base is fixed on the machine platform; the swing base is rotatably mounted on the transfer base around the Y axis to switch between an upright position and a horizontal position; The swing seat is provided with a receiving groove for receiving a hook body, and the receiving groove is provided with a second magnetic member for adsorbing and fixing the hook body; When the swing seat is in the upright position, the receiving slot is connected to the output end of the vertical plate track to receive the hook output from the vertical plate track; when the swing seat is in the flat position, it is rotated 90 degrees relative to the upright position; The hook body loading mechanism is used to carry the hook body on the swing seat in a horizontal position to the loading mold of the hook body loading station. The hook body transfer mechanism further includes a second positioning needle, which is fixed relative to the transfer base; The swing seat is provided with a second through hole extending through the bottom of the receiving slot. The position of the second through hole corresponds to the position of the riveting hole of the hook body. The second positioning pin is passed through the second through hole and arranged in the receiving slot when the swing seat is in a flat position.

9. The hook automatic assembly riveting machine according to claim 8, characterized in that: The hook body feeding mechanism includes a hook body feeding base and a hook body handling fixture; The hook body piece handling fixture is used to grab and release the hook body; The hook body loading base is fixed on the machine table; the hook body handling fixture is installed on the spring piece loading base so as to move along an X-axis direction, move along a Z-axis direction, and rotate around the Z-axis direction; The X-axis direction is perpendicular to the Z-axis direction.

10. The hook automatic assembly riveting machine according to claim 9, characterized in that: It also includes a material pressing and fixing mechanism and a material discharging mechanism; The pressing and fixing mechanism includes a pressing base and an elastic pressing piece; the elastic pressing piece is radially movably installed on the pressing base to approach or move away from the riveting station; the elastic pressing piece is used to approach the riveting station during the riveting process of the rivet feeding riveting press to press and fix the hook body on the loading mold of the riveting station. The spring piece positioning mechanism includes a positioning base and a positioning push block; the positioning base is fixed relative to the machine platform, and the positioning push block is radially movably mounted on the positioning base to move closer to or away from the riveting station; when the positioning push block moves radially toward the riveting station, it pushes the second end of the temporarily placed spring piece to the top of the positioning groove; A discharging platform is provided on one side of the discharging station, and the discharging mechanism is used to transport the hook on the loading mold that arrives at the discharging station to the discharging platform for release; the discharging mechanism includes a discharging base and a discharging transport fixture; the discharging transport fixture is installed on the discharging base so as to move along an X-axis direction and along a Z-axis direction.

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