In-mold automatic riveting mechanism

Abstract

The utility model discloses an in-mold automatic riveting mechanism, which is characterized in that a riveting mechanism is arranged at the part forming tail end of a continuous mold, so that rivets are output after being directly riveted with parts, and the assembly efficiency of automobile parts is improved. The die comprises an upper die base; a lower die holder; a material belt; the riveting lower die base comprises a fixed base, a profiling mounting bottom plate, a plurality of sliding block assemblies and a plurality of rivet runner assemblies, a profiling mounting plate is arranged on the upper surface of the fixed base, a guide groove is formed in the position, corresponding to the riveting position, of the profiling mounting plate, the corresponding sliding block assemblies are embedded in the guide groove, and the rivet runner assemblies are arranged in the guide groove. And a rivet positioning notch is formed in the outer side of the sliding block assembly, a linear pressing and attaching guide mechanism is arranged at the outer end of the sliding block assembly, and the linear pressing and attaching guide mechanism is driven by external force to drive the rivet positioning notch to move in a reciprocating mode along the rivet feeding port and the rivet riveting position.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts assembly, in particular to an in-mold automatic riveting mechanism. Background Art

[0002] When assembling automobile parts, see Figure 1 The bottom of the part is formed by a continuous die in advance, and then rivets are set on the part through an engineering die on the outside, so that the rivets are riveted at the corresponding positions of the part. Since the part needs to be riveted at the four corners respectively, the existing riveting requires independent feeding and then riveting, which makes the riveting time-consuming and labor-intensive. Moreover, since the engineering die and the continuous die are arranged independently during riveting, it is necessary to assist in positioning the parts, which makes the assembly efficiency of automobile parts low. Therefore, it is urgent to develop a riveting mechanism to improve the assembly efficiency of automobile parts. Summary of the invention

[0003] In view of the above problems, the present invention provides an in-mold automatic riveting mechanism, which is arranged at the part forming end of the continuous mold, so that the rivet is directly riveted with the part and then output, thereby improving the assembly efficiency of automobile parts.

[0004] The in-mold automatic riveting mechanism is characterized in that it comprises:

[0005] Upper die seat;

[0006] Lower die seat;

[0007] Material strip;

[0008] and a riveting lower die base, which includes a fixed base, a contoured mounting bottom plate, a plurality of slider assemblies, and a plurality of rivet runner assemblies, wherein the upper surface of the fixed base is provided with a contoured mounting plate, the contoured mounting plate is provided with a guide groove corresponding to the riveting position, the guide groove is embedded with a corresponding slider assembly, the outer side of the slider assembly is provided with a rivet positioning notch, the outer end of the slider assembly is provided with a linear pressing guide mechanism, and the linear pressing guide mechanism drives the rivet positioning notch to reciprocate along the rivet feeding port and the rivet riveting position under the driving of an external force;

[0009] A riveting station is arranged behind the output of the material strip, and the riveting station is arranged corresponding to the rear of the lower die seat. A riveting lower die seat is fixed at the position of the riveting station, and the riveting lower die seat is arranged directly below the material strip. The material strip is provided with parts that are continuously stamped and formed. A corresponding rivet runner assembly is arranged on the fixed base, and the output end of the external vibration plate is connected to the input end of the rivet runner assembly, and the output end of the rivet runner assembly is connected to the rivet feed port provided on the contoured mounting base plate;

[0010] A downwardly convex riveting punch and a driving insert are provided at a position of the upper die seat corresponding to the riveting station. The downward convex height of the driving insert is lower than that of the riveting punch. The lower end of the driving insert corresponds to the driving end of the linear pressing guide mechanism. The lower end of the driving insert drives the rivet positioning notch to move along the rivet feeding port to the rivet riveting position for operation. The riveting punch is used to press the parts down and rivet with the corresponding rivets.

[0011] It is further characterized by:

[0012] The rivets are arranged at both sides of the part, each of the guide grooves is a transverse groove, the slider assembly includes a transverse rail and a slider, the linear pressure guide mechanism includes a guide stud and a linear spring, the transverse rail is located in the guide groove and is fixedly arranged, the inner side of the slider is embedded in the corresponding side of the transverse rail, the outer side edge of the slider is concave to form the rivet positioning notch, the relative outer end of the slider is fixedly connected with a guide stud, the guide stud passes through a transverse linear through hole, and the large head end is convex, the exposed end of the guide stud is sleeved with the linear spring, and in the initial state, the rivet positioning notch is connected to the rivet feeding port arranged on the contoured mounting base plate;

[0013] Four positioning bosses are arranged at the four corners of the upper surface of the contoured mounting base plate, and the positioning bosses are used to support the corresponding lower surface of the parts, so as to ensure that the parts are not pressed down as a whole, and also ensure that the parts can be reliably reset after the riveting punch is riveted downward with the rivet, thereby driving the rivet to be separated from the rivet positioning notch, so that after the upper template is reset, the slider can be reliably reset;

[0014] The upper surface of the outer end of the slider is provided with a slider slope, the lower surface of the driving knife is a driving slope that imitates the slider slope, the driving knife and the slider are arranged one by one, and the driving slope of the driving knife is used to press the slider slope, thereby driving the slider to move linearly along the corresponding transverse track;

[0015] The downward protrusion height of the driving insert ensures that the lateral position of the slider does not move during the process of the riveting punch riveting the rivet downward.

[0016] After adopting the above technical scheme, after the parts are processed and formed along the continuous die, a riveting station is added to the continuous die, and the rivets are arranged by the vibrating disk through the rivet flow channel of the rivet flow channel assembly into the rivet positioning notch of the slider assembly. The upper die assembly moves downward with the punch press, and the lower end of the driving insert corresponds to the driving end of the linear pressing guide mechanism. The lower end of the driving insert drives the rivet positioning notch to move along the rivet feed port to the rivet riveting position. After the rivet position is fixed, the riveting punch is used to press the part down and rivet the corresponding rivet. Finally, the punch press slowly moves upward, the driving insert and the slider assembly are separated, and the linear pressing guide mechanism drives the rivet positioning notch to move along the rivet riveting position to the rivet feed port under the drive of the elastic external force, and then the operation is cyclically performed in sequence. The riveting mechanism is set at the part forming end of the continuous die, so that the rivet is directly riveted with the part and then output, thereby improving the assembly efficiency of automobile parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a three-dimensional structure applicable to the present invention;

[0018] Figure 2 for Figure 1 A local enlarged view of point A;

[0019] Figure 3 It is a schematic diagram of the assembly of the riveting lower die base of the present invention;

[0020] Figure 4 It is a bottom view schematic diagram of the upper die base of the present invention corresponding to the riveting station;

[0021] Figure 5 It is a schematic diagram of assembling the driving blade of the present invention;

[0022] The names corresponding to the serial numbers in the figure are as follows:

[0023] Upper die base 10, lower die base 20, material strip 30, riveted lower die base 40, fixed base 50, contoured mounting base plate 60, guide groove 61, rivet feed port 62, positioning boss 63, slider assembly 70, rivet positioning notch 71, transverse rail 72, slider 73, slider slope 731, rivet runner assembly 80, guide rail 81, base plate 82, upper cover plate 83, discharge channel 84, riveting position 90, guide stud 91, big head end 911, linear spring 92, riveting station 100, part 110, vibration plate 120, riveting punch 130, drive insert 140, drive slope 141, upper cover 150, connecting block 160. DETAILED DESCRIPTION

[0024] In-mold automatic riveting mechanism, see Figure 1-Figure 5, which includes an upper die base 10, a lower die base 20, a material strip 30, and a riveting lower die base 40; in specific implementation, two rivets are respectively provided on both sides of the part along the moving direction of the material strip, and the two rivets on each side are symmetrically arranged with respect to its longitudinal vertical plane.

[0025] The riveting lower die base 40 includes a fixed base 50, a contoured mounting base plate 60, four groups of slider assemblies 70, and four groups of rivet runner assemblies 80. The upper surface of the fixed base 50 is provided with a contoured mounting plate 60. The contoured mounting plate 60 is provided with guide grooves 61 corresponding to four riveting positions 90. The corresponding slider assemblies 70 are embedded in the guide grooves 61. The outer side of the slider assembly 70 is provided with a rivet positioning notch 71. The outer end of the slider assembly 70 is provided with a linear pressing guide mechanism 90. The linear pressing guide mechanism 90 drives the rivet positioning notch 71 to reciprocate along the rivet feeding port 62 and the rivet riveting position 90 under the drive of an external force.

[0026] A riveting station 100 is arranged behind the output of the material 30, and the riveting station 100 is arranged corresponding to the rear of the lower die seat 20. A riveting lower die seat 40 is fixed at the position of the riveting station 100, and the riveting lower die seat 40 is arranged directly below the material belt 30. The material belt 30 is provided with a continuously stamped part 110. Four groups of rivet flow channel assemblies 80 are arranged on the fixed base 50, and each group of rivet flow channel assemblies includes a guide rail 81, a bottom plate 82, an upper cover plate 83, and a discharge channel 84. The discharge channel 84 is embedded in the corresponding notch of the contoured mounting plate, and the outlet of the discharge channel 84 is the rivet feed port 62.

[0027] The output ends of the external vibration plate 120 are respectively connected to the input ends of the guide rails 81 of the rivet flow channel assembly 80, and the inner cavities of the bottom plate 82 and the upper cover plate 83 of the rivet flow channel assembly 80 are used for arranging and outputting rivets in a single arrangement;

[0028] The upper die holder 10 is provided with a downwardly convex riveting punch 130 and a driving insert 140 at a position corresponding to the riveting station 100. The two riveting positions 90 on the same side share a connecting block 160. The riveting punch 130 is fixedly connected to the corresponding position of the upper die holder 10 through the connecting block 160.

[0029] The lower protrusion height of the driving knife 140 is lower than the riveting punch 130. The lower end of the driving knife 140 corresponds to the driving end of the linear pressing guide mechanism 90. The lower end of the driving knife 140 drives the rivet positioning notch 71 to move along the rivet feeding port 62 toward the rivet riveting position 90. The riveting punch 130 is used to press the part 110 down and rivet with the corresponding rivet.

[0030] During specific implementation, the rivets are arranged at both sides of the part 110, each guide groove 61 is a transverse groove, the slider assembly 70 includes a transverse rail 72 and a slider 73, the linear pressing guide mechanism 90 includes a guide stud 91 and a linear spring 92, the transverse rail 72 is located in the guide groove 61 and is fixedly connected to the fixed base 50 at the lower part by bolts, the inner side of the slider 73 is embedded in the corresponding side of the transverse rail 72, the outer side edge of the slider 73 is concave to form a rivet positioning notch 71, the relative outer end of the slider 73 is fixedly connected with a guide stud 91, the guide stud 91 passes through the transverse linear through hole located on the profiling installation base plate 60, and the large head end 911 is convex, the exposed end sleeve of the guide stud 91 is provided with a linear spring 92, and the linear spring is mounted on the large head end 911 and the corresponding outer facade of the profiling installation base plate 60; in the initial state, the rivet positioning notch 71 is connected to the rivet feed port 62 provided on the profiling installation base plate 60;

[0031] Four positioning bosses 63 are provided at the four corners of the upper surface of the contoured mounting base plate 60. The positioning bosses 63 are used to support the corresponding lower surface of the part 110 to ensure that the part 110 is not pressed downward as a whole, and to ensure that the part 110 is reliably reset after the riveting punch 130 is riveted downward with the rivet, thereby driving the rivet to disengage from the rivet positioning notch 71, so that after the upper die seat 10 is reset, the slider 73 is reliably reset;

[0032] The upper surface of the outer end of the slider 73 is provided with a slider inclined surface 731, and the lower surface of the driving insert 140 is a driving inclined surface 141 that imitates the slider inclined surface. The driving insert 140 and the slider 73 are arranged one by one. The driving inclined surface 141 of the driving insert 140 is used to press the slider inclined surface 731, thereby driving the slider 73 to move linearly along the corresponding transverse track 72;

[0033] The downward protrusion height of the driving blade 140 ensures that the lateral position of the slider 72 does not move during the process of the riveting punch 130 riveting the rivet downward.

[0034] In specific implementation, when the upper part of the part 110 needs to be riveted with the upper cover 150, it can also be assembled and riveted through an online riveting mechanism. At this time, it is necessary to use an external mechanism to pre-transport the upper cover to the upper surface of the part and reliably position it.

[0035] Its working principle is as follows: after the parts are processed and formed along the continuous die, a riveting station is added to the continuous die, and the rivets are arranged by the vibrating disk through the rivet flow channel of the rivet flow channel assembly into the rivet positioning notch of the slider assembly. The upper die assembly moves downward with the punch press, and the lower end of the driving insert corresponds to the driving end of the linear pressing guide mechanism. The lower end of the driving insert drives the rivet positioning notch to move along the rivet feed port to the rivet riveting position. After the rivet position is fixed, the riveting punch is used to press the part down and rivet the corresponding rivet. Finally, the punch press slowly moves upward, and the driving insert and the slider assembly are separated. The linear pressing guide mechanism drives the rivet positioning notch to move along the rivet riveting position to the rivet feed port under the drive of the elastic external force, and then the operation is cyclically performed in sequence. A riveting mechanism is set at the part forming end of the continuous die, so that the rivet is directly riveted with the part and then output, thereby improving the assembly efficiency of automotive parts.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. In-mold automatic riveting mechanism, characterized in that: It includes: Upper die seat; Lower die seat; Material strip; and a riveting lower die base, which includes a fixed base, a contoured mounting bottom plate, a plurality of slider assemblies, and a plurality of rivet runner assemblies, wherein the upper surface of the fixed base is provided with a contoured mounting plate, the contoured mounting plate is provided with a guide groove corresponding to the riveting position, the guide groove is embedded with a corresponding slider assembly, the outer side of the slider assembly is provided with a rivet positioning notch, the outer end of the slider assembly is provided with a linear pressing guide mechanism, and the linear pressing guide mechanism drives the rivet positioning notch to reciprocate along the rivet feeding port and the rivet riveting position under the driving of an external force; A riveting station is arranged behind the output of the material strip, and the riveting station is arranged corresponding to the rear of the lower die seat. A riveting lower die seat is fixed at the position of the riveting station, and the riveting lower die seat is arranged directly below the material strip. The material strip is provided with parts that are continuously stamped and formed. A corresponding rivet runner assembly is arranged on the fixed base, and the output end of the external vibration plate is connected to the input end of the rivet runner assembly, and the output end of the rivet runner assembly is connected to the rivet feed port provided on the contoured mounting base plate; A downwardly convex riveting punch and a driving insert are provided at a position of the upper die seat corresponding to the riveting station. The downward convex height of the driving insert is lower than that of the riveting punch. The lower end of the driving insert corresponds to the driving end of the linear pressing guide mechanism. The lower end of the driving insert drives the rivet positioning notch to move along the rivet feeding port to the rivet riveting position for operation. The riveting punch is used to press the parts down and rivet with the corresponding rivets.

2. The in-mold automatic riveting mechanism according to claim 1, characterized in that: The rivets are arranged on both sides of the part, each of the guide grooves is a transverse groove, the slider assembly includes a transverse rail and a slider, the linear pressure-attachment guide mechanism includes a guide stud and a linear spring, the transverse rail is located in the guide groove and is fixedly arranged, the inner side of the slider is embedded in the corresponding side of the transverse rail, the outer side edge of the slider is concave to form the rivet positioning notch, the relative outer end of the slider is fixedly connected with a guide stud, the guide stud passes through a transverse linear through hole, and the large head end is convex, the exposed end of the guide stud is sleeved with the linear spring, and in the initial state, the rivet positioning notch is connected to the rivet feeding port provided on the contoured mounting base plate.

3. The in-mold automatic riveting mechanism according to claim 1, characterized in that: Four positioning bosses are arranged at four corners of the upper surface of the contoured mounting base plate, and the positioning bosses are used to support the corresponding lower surfaces of the parts.

4. The in-mold automatic riveting mechanism according to claim 1, characterized in that: The upper surface of the outer end of the slider is provided with a slider inclined surface, the lower surface of the driving knife is a driving inclined surface that imitates the slider inclined surface, the driving knife and the slider are arranged in a one-to-one correspondence, and the driving inclined surface of the driving knife is used to press the slider inclined surface, thereby driving the slider to move linearly along the corresponding transverse track.

5. The in-mold automatic riveting mechanism according to claim 1, characterized in that: The downward protrusion height of the driving insert ensures that the lateral position of the slider does not move during the process of the riveting punch riveting the rivet downward.

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