A movable floating core positioning mechanism for a riveting device

Abstract

The present invention discloses a movable floating core positioning mechanism for a riveting device, which includes a support frame, a positioning frame and a driving mechanism. The driving mechanism is used to drive the vertical lifting of the positioning frame. The positioning frame is provided with a left unit block, a right unit block, a driving unit and a positioning unit. The two unit blocks are connected by a tension spring. The two unit blocks are driven by the driving unit to move outward to both sides, and the two unit blocks moved to the outside are positioned by the positioning unit. The outer sides of the two unit blocks are clamping ends, and a floating core positioning assembly is provided on the clamping ends of the two unit blocks. The floating core positioning assembly includes a cylinder part and a positioning rod. A spherical head is provided at the outer end of the positioning rod. A groove opening is provided on the outer end face of the cylinder part. A piston is provided on the positioning rod. The piston seals and divides the inner cavity of the cylinder part into a first chamber and a second chamber. The cylinder part is provided with a first joint communicating with the first chamber and a second joint communicating with the second chamber. While playing a positioning role, the groove opening end faces of the two unit blocks serve as the bearing ends of the riveting device.

Description

Technical Field

[0001] The present invention relates to the technical field of riveting equipment, and particularly relates to a movable floating core positioning mechanism for a riveting equipment. Background Art

[0002] Existing children's dining chairs include armrests and a dining chair body composed of a seat and a backrest. When assembling the armrests, it is necessary to first pre-assemble the armrests on both sides of the dining chair body, and then use a riveting equipment to rivet the armrests to the dining chair body. Before riveting, it is necessary to position the two pre-fixed parts to prevent them from moving during the riveting process.

[0003] When the riveting equipment is working, it is necessary to place the workpiece between its acting end and the bearing end. For example, when riveting the dining chair body and the armrest, it is necessary to place the dining chair body and the armrest between the acting end and the bearing end of the riveting equipment, that is, it is necessary to place the acting end or the bearing end of the riveting equipment in the seat space of the dining chair body, and the other end outside the dining chair body. And the dining chair body itself needs to be positioned by a positioning mechanism during riveting. Since the internal space of the seat body is small, the positioning mechanism and the riveting equipment are prone to interference. Therefore, it is necessary to improve the existing positioning mechanism. Summary of the Invention

[0004] The purpose of the present invention is to provide a movable floating core positioning mechanism for a riveting equipment. The driving mechanism drives the positioning frame to descend into the seat space of the dining chair body, and aligns the floating core positioning component with the riveting hole of the dining chair body. The two unit blocks move outward under the action of the driving unit to clamp the dining chair body, thereby playing a positioning role. At the same time, the floating core positioning mechanism also serves as the bearing end of the riveting equipment, solving the problem of interference between the positioning mechanism and the acting end or the bearing end of the riveting equipment.

[0005] The above technical purpose of the present invention is achieved through the following technical solutions: A movable floating core positioning mechanism for a riveting equipment includes a support frame, a positioning frame, and a driving mechanism. The positioning frame is vertically liftably arranged on the support frame, and the driving mechanism is used to drive the positioning frame to vertically lift and lower. The positioning frame is provided with a left unit block, a right unit block, a driving unit, and a positioning unit. The two unit blocks are connected by a tension spring. The driving unit drives the two unit blocks to move outward to both sides, and the positioning unit positions the two unit blocks that move to the outside. The outer sides of the two unit blocks are clamping ends, and at least one set of floating core positioning components are respectively arranged on one side of the clamping ends of the two unit blocks. The floating core positioning component includes a cylinder part and a positioning rod. A spherical head is provided at the outer end of the positioning rod. A groove opening with an outer diameter larger than the outer diameter of the spherical head is provided on the outer end face of the cylinder part. A piston is provided on the positioning rod, and the piston divides the inner cavity of the cylinder part into a first chamber and a second chamber in a sealed manner. The cylinder part is provided with a first joint communicating with the first chamber and a second joint communicating with the second chamber.

[0006] Further, the driving unit includes a cam and a motor. The motor is fixedly installed on the positioning frame. The cam is connected to the output end of the motor and is disposed between the left unit block and the right unit block. The motor drives the cam to rotate so as to drive the left unit block and the right unit block to move outward to both sides.

[0007] Further, a horizontally arranged slide rail is provided on the positioning frame. The left unit block and the right unit block are respectively slidably installed on the slide rail through sliders.

[0008] Further, a sealing plug is installed at the rear end of the cylinder part. A top column is threadedly connected to the inner sides of the two unit blocks. The position of the sealing plug in the cylinder part is adjusted by screwing the top column.

[0009] Further, outer protrusions cooperating with the cam are provided at the inner ends of the left unit block and the right unit block. A vertical part and arc parts provided at both ends of the vertical part are provided in the middle of the outer protrusion. The vertical part is smoothly connected to the inner end face of the corresponding unit block through the arc parts.

[0010] Further, the positioning unit includes a positioning cylinder and a positioning rod provided at the output end of the positioning cylinder. Positioning holes are respectively provided on the left unit block and the right unit block. The positioning cylinder drives the positioning rod to extend into the positioning holes and be in positioning cooperation with the positioning holes to fix the corresponding unit blocks.

[0011] Further, a guide sleeve is provided at the front end of the cylinder part. The positioning rod passes through the guide sleeve and extends outside the cylinder part. The guide sleeve plays a role in sealing and guiding the positioning rod.

[0012] Further, a plurality of guide rods are provided on the support frame. A sliding plate is provided on the guide rods. The positioning frame is fixedly connected to the sliding plate. The output end of the driving mechanism is connected to the sliding plate to drive the positioning frame connected to the sliding plate to move vertically up and down.

[0013] In summary, the present invention has the following beneficial effects:

[0014] The movable floating core positioning mechanism of the present invention drives the positioning frame to descend into the seat space of the dining chair body through the driving mechanism, and aligns the floating core positioning component with the riveting holes of the dining chair body. The two unit blocks move outward under the action of the driving unit to clamp the dining chair body, thereby playing a positioning role. At the same time, the floating core positioning mechanism plays the role of the pressure-bearing end of the riveting device. Specifically, the positioning rod and the end face of the groove opening of the cylinder part play the role of the pressure-bearing end of the riveting device, solving the problem of interference between the positioning mechanism and the acting end or the pressure-bearing end of the riveting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall structural schematic diagram of the present invention.

[0016] Figure 2 is the cross-sectional view of the present invention.

[0017] Figure 3 It is an enlarged view of part A of the present invention.

[0018] Figure 4 It is a cross-sectional view of the floating core positioning assembly of the present invention.

[0019] Figure 5 It is a front structural schematic diagram of the positioning frame of the present invention.

[0020] Figure 6 It is a back structural schematic diagram of the positioning frame of the present invention.

[0021] Figure 7 It is a cross-sectional view of the positioning frame of the present invention.

[0022] In the figure: 1, support frame; 11, guide rod; 12, sliding plate; 2, positioning frame; 21, slide rail; 22, slider; 3, driving mechanism; 4, left unit block; 41, clamping end; 42, positioning hole; 5, right unit block; 6, driving unit; 61, cam; 62, motor; 7, positioning unit; 71, positioning cylinder; 72, positioning pin; 8, tension spring; 9, floating core positioning assembly; 91, cylinder part; 911, groove opening; 912, first joint; 913, second joint; 914, sealing plug; 915, top column; 916, guide sleeve; 92, positioning rod; 921, spherical head; 922, piston. Detailed implementation manners

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] As Figure 1-7 shown, a movable floating core positioning mechanism of a riveting device includes a support frame 1, a positioning frame 2 and a driving mechanism 3. The positioning frame 2 is disposed on the support frame 1 in a liftable manner, and the driving mechanism 3 is used to drive the positioning frame 2 to vertically lift and lower. A bearing platform is provided at the bottom of the support frame 1, and the dining chair body is placed upright on the bearing platform. Further, a plurality of groups of guide rods 11 are provided on the support frame 1, and a sliding plate 12 is provided on the guide rods 11. The positioning frame 2 is fixedly connected to the sliding plate 12, and the output end of the driving mechanism 3 is connected to the sliding plate 12 to drive the positioning frame 2 connected to the sliding plate 12 to vertically lift and lower. Before riveting, the driving mechanism 3 drives the positioning frame 2 to move down to the seat space of the dining chair body to position the dining chair body. After riveting is completed, the driving mechanism 3 drives the positioning frame 2 to move up to release the positioning of the dining chair body.

[0025] The positioning frame 2 is provided with a left unit block 4, a right unit block 5, a driving unit 6 and a positioning unit 7. Specifically, the positioning frame 2 is provided with a horizontally arranged slide rail 21. The left unit block 4 and the right unit block 5 are respectively slidably mounted on the slide rail 21 through sliders 22. The two unit blocks are connected by a tension spring 8. The driving unit 6 is used to drive the two unit blocks to move outward to both sides. Specifically, the driving unit 6 can drive the two unit blocks to switch between a retracted position and a clamping position. The positioning unit 7 is used to position the two unit blocks that move to the outside. The outer sides of the two unit blocks are clamping ends 41. The dining chair body is fixed by the clamping ends 41 of the two unit blocks acting on the dining chair body.

[0026] At least one set of floating core positioning components 9 are respectively arranged on one side of the clamping ends 41 of the two unit blocks. The floating core positioning components 9 include a cylinder part 91 and a positioning rod 92. A ball head 921 is arranged at the outer end of the positioning rod 92. A groove opening 911 with an outer diameter larger than the outer diameter of the ball head 921 is arranged on the outer end face of the cylinder part 91. A piston 922 is arranged on the positioning rod 92. The piston 922 divides the inner cavity of the cylinder part 91 into a first chamber and a second chamber in a sealed manner. The cylinder part 91 is provided with a first joint 912 communicated with the first chamber and a second joint 913 communicated with the second chamber. When the first joint 912 intakes air and the second joint 913 exhausts air, the positioning rod 92 retracts inward. When the second joint 913 intakes air and the first joint 912 exhausts air, the positioning rod 92 extends outward.

[0027] When the riveting equipment rivets, the rivet is pushed by the pressure rod at the acting end to abut against the positioning rod 92 and continuously move in the direction of the retraction of the positioning rod 92. At this time, the positioning rod 92, the rivet and the pressure rod move synchronously in the direction of the retraction of the positioning rod 92. When the positioning rod 92 abuts against the inner end of the cylinder part 91 and stops moving, the rivet is squeezed by the ball head 921 of the positioning rod 92 and the pressure rod. The groove opening 911 of the cylinder part 91 also functions as the bearing end of the riveting equipment.

[0028] The driving unit 6 includes a cam 61 and a motor 62. The motor 62 is fixedly installed on the positioning frame 2. The cam 61 is connected to the output end of the motor 62 and is arranged between the left unit block 4 and the right unit block 5. The motor 62 drives the cam 61 to rotate to drive the left unit block 4 and the right unit block 5 to move outward to both sides. Further, outer protrusions cooperating with the cam 61 are arranged at the inner ends of the left unit block 4 and the right unit block 5. A vertical part and arc parts arranged at both ends of the vertical part are arranged in the middle of the outer protrusion. The vertical part is smoothly connected to the inner end face of the corresponding unit block through the arc parts.

[0029] A sealing plug 914 is installed at the rear end of the cylinder part 91. A top column 915 is threadedly connected to the inner sides of the two unit blocks. The position of the sealing plug 914 in the cylinder part 91 is adjusted by screwing the top column 915, and further, the distance between the ball head 921 and the groove opening 911 when the positioning rod 92 retracts into the cylinder part 91 is adjusted.

[0030] The positioning unit 7 includes a positioning cylinder 71 and a positioning pin 72 arranged at the output end of the positioning cylinder 71. Positioning holes 42 are respectively provided on the left unit block 4 and the right unit block 5. The positioning cylinder 71 drives the positioning pin 72 to extend into the positioning hole 42 and be in positioning cooperation with the positioning hole 42 to fix the corresponding unit block. The two sliders 22 are fixed at the clamping position through the positioning unit 7. On the one hand, it plays a role in positioning the two sliders 22 to ensure the clamping state of the two sliders 22. On the other hand, when the riveting device is riveting, it prevents the problem that the two sliders 22 move towards the middle of the positioning frame 2 under pressure and continuously squeeze the cam 61, resulting in the bending of the output shaft of the motor 62 under pressure.

[0031] A guide sleeve 916 is provided at the front end of the cylindrical body portion 91. The positioning rod 92 passes through the guide sleeve 916 and extends outside the cylindrical body portion 91. The guide sleeve 916 plays a role in sealing and guiding the positioning rod 92.

[0032] The movable floating core positioning mechanism of the present invention drives the positioning frame 2 to descend into the seating space of the dining chair body through the driving mechanism 3, and aligns the floating core positioning component 9 with the riveting hole of the dining chair body. The two unit blocks move outward under the action of the driving unit 6 to clamp the dining chair body, thereby playing a positioning role. At the same time, the floating core positioning mechanism serves as the bearing end of the riveting device. Specifically, the positioning rod 92 and the end face of the groove opening 911 of the cylindrical body portion 91 serve as the bearing end of the riveting device, solving the problem of interference between the positioning mechanism and the acting end or bearing end of the riveting device.

[0033] The above is only the preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made according to the structures, features, and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A movable floating core positioning mechanism for a riveting device, Characterized in that: It includes a support frame (1), a positioning frame (2) and a driving mechanism (3). The positioning frame (2) is arranged on the support frame (1) in a liftable manner. The driving mechanism (3) is used to drive the positioning frame (2) to lift vertically. The positioning frame (2) is provided with a left unit block (4), a right unit block (5), a driving unit (6) and a positioning unit (7). The two unit blocks are connected by a tension spring (8). The driving unit (6) is used to drive the two unit blocks to move outward to both sides. The positioning unit (7) is used to position the two unit blocks that move to the outside. The outer sides of the two unit blocks are clamping ends (41). At least one set of floating core positioning components (9) are respectively arranged on one side of the clamping ends (41) of the two unit blocks. The floating core positioning components (9) include a cylinder part (91) and a positioning rod (92). A spherical head part (921) is arranged at the outer end of the positioning rod (92). A groove opening (911) with an outer diameter larger than the outer diameter of the spherical head part (921) is arranged on the outer end face of the cylinder part (91). A piston (922) is arranged on the positioning rod (92). The piston (922) seals and divides the inner cavity of the cylinder part (91) into a first chamber and a second chamber. The cylinder part (91) is provided with a first joint (912) communicated with the first chamber and a second joint (913) communicated with the second chamber.

2. The movable floating core positioning mechanism for a riveting device according to claim 1, Characterized in that: The driving unit (6) includes a cam (61) and a motor (62). The motor (62) is fixedly installed on the positioning frame (2). The cam (61) is connected to the output end of the motor (62) and is arranged between the left unit block (4) and the right unit block (5). The motor (62) drives the cam (61) to rotate to drive the left unit block (4) and the right unit block (5) to move outward to both sides.

3. The movable floating core positioning mechanism for a riveting device according to claim 1, Characterized in that: A horizontally arranged slide rail (21) is arranged on the positioning frame (2). The left unit block (4) and the right unit block (5) are respectively slidably installed on the slide rail (21) through sliders (22).

4. The movable floating core positioning mechanism for a riveting device according to claim 1, Characterized in that: A sealing plug (914) is installed at the rear end of the cylinder part (91). A top column (915) is threadedly connected to the inner sides of the two unit blocks. The position of the sealing plug (914) in the cylinder part (91) is adjusted by screwing the top column (915).

5. The movable floating core positioning mechanism for a riveting device according to claim 2, Characterized in that: Outer protrusions cooperating with the cam (61) are arranged at the inner ends of the left unit block (4) and the right unit block (5). A vertical part and arc parts arranged at both ends of the vertical part are arranged in the middle of the outer protrusion. The vertical part is smoothly and continuously connected to the inner end face of the corresponding unit block through the arc parts.

6. The movable floating core positioning mechanism for a riveting device according to claim 1, Characterized in that: The positioning unit (7) includes a positioning cylinder (71) and a positioning pin (72) arranged at the output end of the positioning cylinder (71). Positioning holes (42) are respectively provided on the left unit block (4) and the right unit block (5). The positioning cylinder (71) drives the positioning pin (72) to extend into the positioning holes (42) and be in positioning cooperation with the positioning holes (42) to fix the corresponding unit blocks.

7. The movable floating core positioning mechanism of a riveting device according to claim 1, characterized in that: A guide sleeve (916) is provided at the front end of the cylindrical body portion (91). The positioning rod (92) passes through the guide sleeve (916) and extends outside the cylindrical body portion (91). The guide sleeve (916) plays a role of sealing and guiding the positioning rod (92).

8. The movable floating core positioning mechanism of a riveting device according to claim 1, characterized in that: A plurality of guide rods (11) are provided on the support frame (1). A sliding plate (12) is arranged on the guide rods (11). The positioning frame (2) is fixedly connected to the sliding plate (12). The output end of the driving mechanism (3) is connected to the sliding plate to drive the positioning frame (2) connected to the sliding plate to move vertically up and down.

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