Equipment for riveting zinc casting

Abstract

The utility model provides equipment for riveting zinc castings, which relates to riveting equipment and comprises a riveting head capable of rotating around the vertical direction, a riveting device and a riveting device. The objective table is used for fixing a workpiece, and the objective table and / or the riveting head can move in the vertical direction so that the riveting head can sequentially provide radial force and riveting force for the workpiece; when the zinc casting is subjected to impact riveting, the riveting head makes contact with the zinc casting, the riveting head rotates in the process of making contact with the zinc casting, radial force is applied to the zinc casting so that the zinc casting can be subjected to stamping deformation, then the riveting head conducts riveting in the vertical direction, and riveting of the zinc casting is completed. Compared with traditional direct riveting in the vertical direction, radial force is applied to the zinc casting before riveting stamping, so that the vertical stamping force needed by riveting of the zinc casting is reduced, and the zinc casting is not prone to deformation.

Description

TECHNICAL FIELD

[0001] The utility model relates to riveting equipment, especially a kind of equipment for riveting zinc casting. BACKGROUND

[0002] Due to the high hardness of zinc alloy, low yield strength, no plasticity of sheet metal, when stamping and riveting zinc casting alone, it will cause the structure of zinc casting to break, resulting in low product yield.

[0003] To solve this problem, the present application provides a kind of equipment for riveting zinc casting, solve the problem of deformation and fracture of zinc casting structure when riveting. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of equipment for riveting zinc casting, to solve the problem of zinc casting deformation caused by excessive impact force when riveting.

[0005] In order to achieve the above purpose, the embodiment of the utility model provides a kind of equipment for riveting zinc casting, comprising:

[0006] Riveting head, the riveting head can rotate around vertical direction;

[0007] Object table, for fixing workpiece, the object table and / or riveting head can move in vertical direction to make riveting head provide radial force and riveting force to workpiece in turn.

[0008] Preferably, the equipment includes a column, the riveting head and the object table are slidably arranged on the column, a driving unit is arranged in the column, and the driving unit drives the riveting head to move along the axial direction of the column.

[0009] Preferably, the column is provided with a cavity along the axial direction, a first screw is arranged in the cavity, the first screw is coaxial with the column, a side surface of the column is provided with a probe window, the length of the probe window is arranged along the axial direction of the column, and the length of the probe window is less than the height of the column.

[0010] The equipment further includes a lifting seat, the lifting seat is provided with a through hole for the column to pass through, a connecting block is arranged in the through hole and fixed to the inner wall of the through hole, the connecting block is screwed with the first screw, and the riveting head is arranged on the lifting seat.

[0011] The first screw drives the lifting seat to move along the axial direction of the first screw.

[0012] Preferably, the upper end side wall of the column is further provided with a hand wheel shaft, the hand wheel shaft is provided with a first bevel gear at one end extending into the cavity, and is provided with a hand wheel at the other end, the upper end of the first screw rod is provided with a second bevel gear meshing with the first bevel gear, and the hand wheel drives the first screw rod to rotate through the meshing of the first bevel gear and the second bevel gear.

[0013] Preferably, the helix angle of the first screw rod is less than the friction angle.

[0014] Preferably, the lifting seat is further provided with a power unit, and the power unit drives the riveting head to rotate around the vertical direction.

[0015] Preferably, the object table is further provided with a clamp for clamping a workpiece, the clamp comprises a movable clamp plate and a fixed clamp plate, and the movable clamp plate can move towards or away from the fixed clamp plate, so as to clamp or release the workpiece.

[0016] Preferably, the clamp further comprises a bottom plate fixed on the object table, and the fixed clamp plate and the movable clamp plate are arranged on two sides of the bottom plate respectively.

[0017] The end of the bottom plate close to the movable clamp plate is further provided with a support plate parallel to the movable clamp plate, the support plate is provided with a second screw rod perpendicular to the support plate, the second screw rod is screwed to the support plate and rotationally connected with the movable clamp plate.

[0018] The above scheme of the utility model has the following beneficial effects:

[0019] When the zinc casting is impacted and riveted, the riveting head contacts the zinc casting, the riveting head rotates in the process of contacting the zinc casting, radial force is applied to the zinc casting to make the zinc casting stamping deformation, then the riveting head rivets along the vertical direction, and the riveting of the zinc casting is completed. Compared with the traditional direct riveting in the vertical direction, because the radial force is applied to the zinc casting before riveting stamping, the vertical stamping force required for the riveting of the zinc casting is reduced, and the zinc casting is not easy to deform.

[0020] Other features and advantages of the utility model will be described in detail in the following specific embodiment part. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the perspective view of the utility model;

[0022] Figure 2 is the schematic view of the driving unit driving the lifting seat;

[0023] Figure 3 is Figure 1 the enlarged view of part A in figure 2;

[0024] Figure 4is a top view of the lifting seat.

[0025] [Legend of the drawing]

[0026] 10 - riveting head,

[0027] 20 - object table, 21 - workpiece,

[0028] 30 - column, 31 - insertion window, 32 - hand wheel shaft, 33 - hand wheel, 34 - first bevel gear

[0029] 40 - driving unit, 41 - first screw rod, 42 - second bevel gear,

[0030] 50 - lifting seat, 51 - through hole, 52 - connecting block,

[0031] 60 - power unit,

[0032] 70 - clamp, 71 - movable clamp plate, 72 - fixed clamp plate, 73 - bottom plate, 74 - support plate, 75 - second screw rod,

[0033] 80 - fixed seat. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical schemes and advantages to be solved by the utility model more clear, the following will be described in detail in combination with the drawings and specific embodiments.

[0035] The parts of the small motor are partially made of zinc castings. When the zinc castings are riveted, although the vertical stamping force is not large, because the hardness of the zinc alloy is high, the yield strength is low, and the plasticity is not as good as that of the conventional sheet metal, in order to reduce the deformation and fracture of the zinc castings during stamping, a device for riveting zinc castings is developed.

[0036] As shown in Figures 1-4 The embodiment of the utility model provides a device for riveting zinc castings, which comprises a riveting head 10 and an object table 20, wherein the riveting head 10 can rotate around the vertical direction, the object table 20 is arranged below the riveting head 10, and the object table 20 is used for fixing a workpiece 21. The object table 20 and / or the riveting head 10 can move in the vertical direction, so that the riveting head 10 can contact the workpiece 21 on the object table 20. The riveting head 10 rotates and descends, exerts a radial force on the workpiece 21 at the moment of contacting the workpiece 21, so that the workpiece 21 generates radial stamping deformation, and then the riveting head 10 continues to move towards the workpiece 21, performs vertical stamping riveting on the workpiece 21, and realizes connection. Because the radial force pre-stamps and deforms the surface of the workpiece 21, the required vertical stamping force of the workpiece 21 is reduced, smaller stamping force can be used to complete riveting, and the deformation and fracture of the workpiece 21 are avoided.

[0037] In the embodiment, the riveting head 10 is replaced according to different riveting parts.

[0038] The device comprises a column 30, and a fixing base 80 is arranged below the column 30 and detachably mounted below the column 30. In an embodiment of the present application, the fixing base 80 is threadedly connected with the column 30 and fixed on the fixing base 80. The aforementioned riveting head 10 and the object table 20 are slidingly arranged on the column 30, and a driving unit 40 is arranged in the column 30 and capable of driving the riveting head 10 to move along the axial direction of the column 30, that is, the driving unit 40 drives the riveting head 10 to ascend and descend in the vertical direction.

[0039] A cavity is arranged in the axial direction of the column 30, and the driving unit 40 comprises a first screw rod 41 arranged in the cavity, the first screw rod 41 is coaxial with the column 30, and the first screw rod 41 is rotatably arranged on the fixing base 80. Preferably, the lower end of the first screw rod 41 is rotatably arranged in the column 30 through an angular contact ball bearing. The inner ring of the angular contact ball bearing is fixedly connected with the lower end of the first screw rod 41, and the outer ring is fixedly connected with the inner wall of the column. The bottom of the column is further provided with external threads, and the fixing base 80 is provided with a threaded hole matched with the external threads.

[0040] A probe window 31 is further arranged on the side of the column 30, the probe window 31 is upwardly arranged from the bottom end surface of the column 30, the length of the probe window 31 is upwardly extended along the axial direction of the column 30, and the length of the probe window 31 is less than the height of the column 30. In the embodiment, the length of the probe window 31 is two-thirds of the height of the column 30.

[0041] The device further comprises a lifting seat 50, the lifting seat 50 is provided with a through hole 51 for the column 30 to pass through, a connecting block 52 is arranged in the through hole 51 and fixed to the inner wall of the through hole 51, the lifting seat 50 is arranged on the column 30 from the bottom of the column 30, and the connecting block 52 is arranged in the cavity through the probe window 31, the connecting block 52 is screwed with the first screw rod 41 in the cavity, and the riveting head 10 is arranged on the lifting seat 50. When the first screw rod 41 rotates, the connecting block 52 ascends and descends along the vertical direction on the first screw rod 41, thereby driving the lifting seat 50 and the riveting head 10 on the lifting seat 50 to ascend and descend.

[0042] A hand wheel shaft 32 is further arranged on the upper end side wall of the column 30, one end of the hand wheel shaft 32 extends into the cavity and is provided with a first bevel gear 34 at the end, and the other end of the hand wheel shaft 32 is exposed outside the cavity and provided with a hand wheel 33. A second bevel gear 42 is further arranged on the upper end of the first screw rod 41, and the first bevel gear 34 and the second bevel gear 42 are meshed with each other. When the hand wheel 33 is rotated, the first bevel gear 34 is meshed with the second bevel gear 42 for transmission, thereby driving the first screw rod 41 to rotate.

[0043] Preferably, a bearing is arranged between the hand wheel shaft 32 and the side wall of the column 30 to reduce the rotational friction of the hand wheel shaft 32.

[0044] In the embodiment of the present application, the helix angle of the first screw rod 41 is less than the friction angle, so that the first screw rod 41 and the connecting block 52 have the feature of self-locking, preventing the riveting head 10 from rebounding.

[0045] The power unit 60 is further arranged on the lifting seat 50, and the power unit 60 drives the riveting head 10 to rotate around the vertical direction. The first screw rod 41 drives the lifting seat 50 to lift, and the power unit 60 and the riveting head 10 on the lifting seat 50 are synchronously lifted, ensuring that the rotation of the riveting head 10 is not affected.

[0046] In the embodiment, the power unit 60 is a motor, and the motor is centrally symmetrically arranged with the riveting head 10 about the through hole 51. The upper end of the riveting shaft is fixedly connected, a riveting through hole 51 penetrating through the lifting seat 50 is arranged on the lifting seat 50, another angular contact ball bearing is sleeved on the riveting shaft, the inner ring of the angular contact ball bearing is interference-fitted with the riveting shaft, and the outer ring is interference-fitted with the riveting through hole 51. By using the angular contact ball bearing, it can not only ensure that the riveting shaft can rotate in the riveting through hole 51 to drive the riveting head 10 to perform rotary motion around the vertical direction, but also ensure that the angular contact ball bearing can bear a certain axial force.

[0047] The motor and the riveting shaft are driven by a belt. Preferably, the riveting shaft and the output end of the motor are both provided with guide wheels, and the two guide wheels and the belt constitute a chain wheel transmission, leaving a space for the column 30 to avoid during the lifting of the lifting seat 50.

[0048] In the present application, the worktable 20 is further provided with a clamp 70 for clamping the workpiece 21. The clamp 70 includes a movable clamp plate 71 and a fixed clamp plate 72. The movable clamp plate 71 can move towards or away from the fixed clamp plate 72, thereby realizing clamping or loosening of the workpiece. The clamp 70 can hold zinc castings of different sizes.

[0049] Further, the clamp 70 further includes a bottom plate 73 fixed on the worktable 20. The fixed clamp plate 72 and the movable clamp plate 71 are respectively arranged on both sides of the bottom plate 73. A support plate 74 is further arranged on one end of the bottom plate 73 close to the movable clamp plate 71. The support plate 74 is parallel to the movable clamp plate 71. A second screw rod 75 is arranged on the support plate 74. The second screw rod 75 is perpendicular to the support plate 74 and is screwed to the support plate 74. One end of the second screw rod 75 penetrating through the support plate 74 is further rotationally connected with the movable clamp plate 71.

[0050] When the second screw rod 75 rotates, the movable clamp plate 71 is pushed to move towards or away from the fixed clamp plate 72.

[0051] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the ordinary in the art, without departing from the principles described in the present application, can be made several improvements and refinements, these improvements and refinements should also be considered as the scope of protection of the present application.

Claims

1. An apparatus for riveting zinc castings, characterized in that, include: The riveting head (10) is rotatable in the vertical direction; A stage (20) for fixing a workpiece (21) is provided. The stage (20) and / or the riveting head (10) are movable in the vertical direction so that the riveting head (10) sequentially provides radial force and riveting pressure to the workpiece (21).

2. The equipment for riveting zinc castings according to claim 1, characterized in that: The device includes a column (30), the riveting head (10) and the platform (20) are slidably disposed on the column (30), and a drive unit (40) is disposed inside the column (30), the drive unit (40) drives the riveting head (10) to move along the axial direction of the column (30).

3. The equipment for riveting zinc castings according to claim 2, characterized in that: The column (30) has a cavity along the axial direction, and a first screw (41) is provided in the cavity. The first screw (41) is coaxial with the column (30). A probe window (31) is provided on the side of the column (30). The length of the probe window (31) is set along the axial direction of the column (30), and the length of the probe window (31) is less than the height of the column (30). The equipment also includes a lifting seat (50), which is provided with a through hole (51) for the column (30) to pass through. A connecting block (52) fixed to the inner wall of the through hole (51) is provided in the through hole (51). The connecting block (52) is screwed to the first screw (41). The riveting head (10) is provided on the lifting seat (50). The first screw (41) drives the lifting seat (50) to move axially along the first screw (41).

4. The equipment for riveting zinc castings according to claim 3, characterized in that: The upper side wall of the column (30) is also provided with a handwheel shaft (32). The handwheel shaft (32) has a first bevel gear (34) at one end that extends into the cavity and a handwheel (33) at the other end. The upper end of the first screw (41) is provided with a second bevel gear (42) that meshes with the first bevel gear (34). The handwheel (33) drives the first screw (41) to rotate through the meshing of the first bevel gear (34) and the second bevel gear (42).

5. The equipment for riveting zinc castings according to claim 4, characterized in that: The helix angle of the first screw (41) is smaller than the friction angle.

6. The equipment for riveting zinc castings according to claim 3, characterized in that: The lifting seat (50) is also equipped with a power unit (60), which drives the riveting head (10) to rotate in the vertical direction.

7. The equipment for riveting zinc castings according to claim 1, characterized in that: The platform (20) is also provided with a clamp (70) for clamping the workpiece (21). The clamp (70) includes a movable clamp (71) and a fixed clamp (72). The movable clamp (71) can move toward or away from the fixed clamp (72) to clamp or release the workpiece (21).

8. The apparatus for riveting zinc castings according to claim 7, characterized in that: The clamp (70) also includes a base plate (73) fixed on the platform (20), and the fixed clamp plate (72) and the movable clamp plate (71) are respectively disposed on both sides of the base plate (73); A support plate (74) is also provided at one end of the base plate (73) near the movable clamping plate (71). The support plate (74) is parallel to the movable clamping plate (71). A second screw (75) perpendicular to the support plate (74) is provided on the support plate (74). The second screw (75) is screwed to the support plate (74) and rotatably connected to the movable clamping plate (71).

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