Aluminum pile casing thread rolling machine

Abstract

The invention discloses an aluminum pile casing thread rolling machine which achieves thread rolling inside an inner cavity of an aluminum pile casing, so that lathe thread turning is replaced, the production efficiency is improved, and the production cost is reduced. The complete machine frame comprises a base and an upper frame coaming, a processing cavity is formed in the upper frame coaming, and at least one side coaming of the upper frame coaming is open to form a material taking and placing opening; the upper die assembly comprises a lifting bottom plate, a vertical frame, a lifting electric cylinder, an upper die base and a rolling wheel set, the vertical frame is arranged in the center of the lifting bottom plate, the upper die base is arranged in the vertical frame, the rolling wheel set is arranged on the upper die base, and the rolling wheel set comprises two rolling wheels located at the two ends of the same radial position. The lifting electric cylinder is arranged at the upper part of the vertical frame and drives the two groups of hobbing wheels to synchronously and radially expand or contract; the lower die assembly comprises a lower die plate, a lower die base, a lower die cavity mechanism, a bottom stripping air cylinder, a power rotary disc and a servo motor.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum casing processing, in particular to an aluminum casing thread rolling machine. Background Art

[0002] Aluminum casing is a product used for automobile air suspension. A group of inner concave teeth are arranged in the inner cavity of the aluminum casing. The existing processing method is to perform thread turning operation by lathe. In actual use, because the number of inner concave teeth is several circles arranged in the height direction, the lathe thread turning needs to be processed circle by circle, and after processing one circle, the tool needs to be withdrawn and axially moved and positioned before the operation can be performed again, which makes the processing efficiency of the inner concave pressure of the aluminum casing relatively low. Therefore, it is urgently needed to develop a device that can perform the inner concave tooth processing of the aluminum casing, so as to improve the processing efficiency. Summary of the invention

[0003] In view of the above problems, the present invention provides an aluminum casing thread rolling machine, which realizes thread rolling inside the inner cavity of the aluminum casing, thereby replacing thread rolling on a lathe, improving production efficiency and reducing production costs.

[0004] An aluminum casing thread rolling machine, characterized in that it comprises:

[0005] The whole machine frame comprises a base and an upper frame enclosure, wherein a processing cavity is formed in the upper frame enclosure, and at least one side of the upper frame enclosure is open to form a material taking and unloading port;

[0006] The upper die assembly includes a lifting base plate, a vertical frame, a lifting electric cylinder, an upper die seat, and a rolling wheel group. The vertical frame is arranged at the center of the lifting base plate, the upper die seat is arranged in the vertical frame, and the rolling wheel group is arranged on the upper die seat. The rolling wheel group includes two groups of rolling wheels located at both ends of the same radial position. The lifting electric cylinder is arranged on the upper part of the vertical frame, and the lifting electric cylinder drives the two groups of rolling wheels to synchronously expand or contract radially.

[0007] and a lower mold assembly, which includes a lower mold plate, a lower mold base, a lower mold cavity mechanism, a bottom stripping cylinder, a power turntable, and a servo motor;

[0008] An upper fixed plate is integrated on the processing cavity, and a supporting plate is arranged on the overall frame corresponding to the bottom of the processing cavity. The linear lifting end of the lifting mechanism is connected to the lifting bottom plate, and the lifting mechanism drives the lifting bottom plate to lift and lower. The supporting plate is provided with a avoidance hole corresponding to the position of the lower mold assembly, and the lower mold plate is fixedly mounted on the supporting plate. A multi-petal slider is arranged in the lower model cavity mechanism, and a lifting plate is arranged on the central bottom of the lower model cavity mechanism, and the lifting plate is connected to the bottom stripping cylinder located in the base, and the bottom of the lower model cavity mechanism is connected to the output end of the power turntable, and the servo motor is connected to the power turntable.

[0009] It is further characterized by:

[0010] The rolling wheel group includes two groups of rolling wheels, a driving vertical rod, and two groups of connecting rod structures, each group of connecting rod mechanisms includes an upper connecting rod and a lower connecting rod, and a vertical connecting rod is provided through the central axis of each group of rolling wheels, and the rolling wheels are located at a fixed position in the height direction of the vertical connecting rod and are freely rotatable, and the upper end of each group of the vertical connecting rods is pivotally connected to one end of the upper connecting rod on the corresponding side, and the lower end of each group of the vertical connecting rods is pivotally connected to one end of the lower connecting rod on the corresponding side, the inner ends of the upper connecting rods on both sides are pivotally connected to the upper pivot point of the driving vertical rod, and the inner ends of the lower connecting rods on both sides are pivotally connected to the lower pivot point of the driving vertical rod, and the top of the driving vertical rod is fixedly connected to a lifting electric cylinder, and the driving vertical rod is lifted and lowered along the vertical track of the upper mold base, so that the lifting electric cylinder drives the two groups of rolling wheels to synchronously radially expand or contract;

[0011] The lifting mechanism includes two sets of servo screw modules, each set of servo screw modules includes a lower servo motor and a screw, the two sets of screws are respectively threadedly connected to the corresponding middle parts of the two sides of the lifting base plate, and the top of each set of screws is respectively installed at the corresponding position of the upper fixed plate through a bearing;

[0012] Vertical guide columns are also provided between the four corners of the lifting base plate and the support plate to ensure reliable lifting operation of the lifting base plate;

[0013] The processing cavity is also provided with a product transfer mechanism, which includes a telescopic track and a clamping arm. The clamping arms move toward or away from each other to complete the clamping or loosening of the product. The clamping arms are synchronously extended and retracted along the telescopic track, thereby completing the transfer of the aluminum casing product along the material taking and discharging port and the cavity position of the lower mold cavity mechanism;

[0014] The lower die seat is also provided with a plurality of upper convex positioning cavities, and the lower surface of the upper die seat is provided with a plurality of lower convex alignment columns. In the mold closing state, the lower convex alignment columns are inserted into the upper convex positioning cavities to ensure stable and reliable mold closing.

[0015] After the structure of the present invention is adopted, the aluminum casing is placed in the cavity of the lower model cavity mechanism. At this time, the lifting plate is in a high position, and then the bottom stripping cylinder descends, and the multi-petal slider holds the outer frame of the aluminum casing. The bottom stripping cylinder drives the lifting plate to descend again, and then the lifting mechanism drives the lifting bottom plate to descend, so that the upper mold assembly descends as a whole. After the upper and lower molds are closed, the servo motor drives the power turntable to drive the lower model cavity mechanism to rotate. At this time, the lifting electric cylinder drives the two sets of rolling wheels to expand radially synchronously, so that the aluminum casing rotates and completes the internal rolling at the same time. After the internal rolling is completed, the lifting electric cylinder is reset, the power turntable stops rotating, the lifting mechanism drives the lifting bottom plate to rise, the multi-petal slider detaches from the aluminum casing, the bottom stripping cylinder lifts the aluminum casing, takes away the aluminum casing, and performs the internal thread rolling operation of the next aluminum casing; it realizes the internal thread rolling of the inner cavity of the aluminum casing, thereby replacing the lathe thread turning, improving production efficiency, and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the thread rolling process corresponding to the present invention;

[0017] Figure 2 The three-dimensional Figure 1 ;

[0018] Figure 3 The three-dimensional Figure 2 ;

[0019] Figure 4 It is a three-dimensional diagram of the assembly of the upper mold assembly and the lower mold assembly of the present invention;

[0020] Figure 5 It is a partial enlarged schematic diagram of the upper mold assembly of the present invention;

[0021] The names corresponding to the serial numbers in the figure are as follows:

[0022] The whole machine frame 100, the upper mold assembly 200, the lower mold assembly 300, and the aluminum casing 400;

[0023] Base 10, upper frame enclosure 20, processing cavity 30, upper fixed plate 31, support plate 32, material loading and unloading port 40, lifting bottom plate 50, vertical frame 60, lifting electric cylinder 70, upper die seat 80, lower convex alignment column 81, rolling wheel group 90, rolling wheel 91, driving vertical rod 92, upper pivot point 921, lower pivot point 922, upper connecting rod 93, lower connecting rod 94, vertical connecting rod 95, lower template 110, lower die seat 120, upper convex positioning cavity 121, lower model cavity mechanism 130, multi-petal slider 131, bottom stripping cylinder 140, power turntable 150, servo motor 160, servo screw module 170, lower servo motor 171, screw 172, vertical guide column 173, product transfer mechanism 180, telescopic rail 181, clamping arm 182, waste placement box 190. DETAILED DESCRIPTION

[0024] Will Figure 1 The aluminum casing obtains internal pressure by rolling the threads, using Figure 2-Figure 5 The aluminum sleeve thread rolling machine shown includes a whole machine frame 100, an upper die assembly 200, and a lower die assembly 300;

[0025] The whole machine frame 100 includes a base 10 and an upper frame enclosure 20. A processing cavity 30 is formed in the upper frame enclosure 20. At least one side of the upper frame enclosure 20 is open to form a material loading and unloading port 40.

[0026] The upper die assembly 200 includes a lifting base plate 50, a vertical frame 60, a lifting electric cylinder 70, an upper die seat 80, and a rolling wheel group 90. The vertical frame 60 is arranged at the center of the lifting base plate 50, the upper die seat 80 is arranged in the vertical frame 60, and the rolling wheel group 90 is arranged on the upper die seat 80. The rolling wheel group 90 includes two groups of rolling wheels 91 located at both ends of the same radial position. The lifting electric cylinder 70 is arranged on the upper part of the vertical frame 60, and the lifting electric cylinder 70 drives the two groups of rolling wheels 91 to synchronously expand or contract radially.

[0027] The lower mold assembly 300 includes a lower mold plate 110, a lower mold base 120, a lower mold cavity mechanism 130, a bottom stripping cylinder 140, a power turntable 150, and a servo motor 160;

[0028] An upper fixed plate 31 is integrated on the processing cavity 30, and a supporting plate 32 is arranged at the bottom of the whole machine frame 100 corresponding to the processing cavity 30. The linear lifting end of the lifting mechanism is connected to the lifting bottom plate 50, and the lifting mechanism drives the lifting bottom plate 50 to lift and lower. The supporting plate 32 is provided with an avoidance hole corresponding to the position of the lower mold assembly 300, and the lower mold plate 110 is fixedly mounted on the supporting plate 32. A multi-petal slider 131 is arranged in the lower model cavity mechanism 130, and a lifting plate (blocked in the figure and belongs to a conventional lifting structure) is arranged at the central bottom of the lower model cavity mechanism 130. The lifting plate is connected to the bottom stripping cylinder 140 located in the base 10, and the bottom of the lower model cavity mechanism 130 is connected to the output end of the power turntable 150, and the servo motor 160 is connected to the power turntable 150.

[0029] In specific implementation, the rolling wheel group 90 includes two groups of rolling wheels 91, a driving vertical rod 92, and two groups of connecting rod structures. Each group of connecting rod mechanisms includes an upper connecting rod 93 and a lower connecting rod 94. A vertical connecting rod 95 is provided through the central axis of each group of rolling wheels 91. The rolling wheels 91 are located at a fixed position in the height direction of the vertical connecting rod 95 and can rotate freely. The upper end of each group of vertical connecting rods 95 is pivotally connected to one end of the upper connecting rod 93 on the corresponding side, and the lower end of each group of vertical connecting rods 95 is pivotally connected to one end of the lower connecting rod 94 on the corresponding side. The inner ends of the upper connecting rods 93 on both sides are pivotally connected to the upper pivot point 921 of the driving vertical rod 92. The inner ends of the lower connecting rods 94 are pivotally connected to the lower pivot point 922 of the driving vertical rod 92, and the top of the driving vertical rod 92 is fixedly connected to the lower output end of the lifting electric cylinder 70, and the vertical rod 92 is driven to move up and down along the vertical track of the upper die seat 80. The upper connecting rod 93, the lower connecting rod 94, the driving vertical rod 92, and the vertical connecting rod 95 corresponding to each rolling wheel 91 form a parallelogram connecting rod driving mechanism. The parallelogram connecting rod driving mechanisms of the two groups of rolling wheels 91 have the same shape and are synchronously driven by the lifting electric cylinder 70, so that the lifting electric cylinder 70 drives the two groups of rolling wheels 91 to synchronously expand or contract radially;

[0030] The lifting mechanism includes two sets of servo screw modules 170, each set of servo screw modules 170 includes a lower servo motor 171 and a screw 172, the two sets of screws 172 are respectively threadedly connected to the corresponding middle parts of the two sides of the lifting bottom plate 50, and the top of each set of screws 172 is respectively installed at the corresponding position of the upper fixed plate 31 through a bearing;

[0031] Vertical guide columns 173 are also provided between the four corners of the lifting base plate 50 and the support plate 32 to ensure reliable lifting operation of the lifting base plate 50 .

[0032] During specific implementation, a product transfer mechanism 180 is also provided in the processing cavity 30. The product transfer mechanism 180 includes a telescopic rail 181 and a clamping arm 182. The two groups of clamping arms 182 move toward or away from each other to complete the clamping or loosening of the aluminum casing 400. The clamping arms 182 synchronously extend and retract along the telescopic rail 181, thereby completing the transfer of the aluminum casing 400 along the material loading and unloading port 40 and the cavity position of the lower model cavity mechanism 130.

[0033] In specific implementation, a plurality of upper convex positioning cavities 121 are provided on the lower mold base 120, and a plurality of lower convex alignment columns 81 are provided on the lower surface of the upper mold base 80. In the mold closing state, the lower convex alignment columns 81 are inserted into the upper convex positioning cavities 121 to ensure stable and reliable mold closing.

[0034] In a specific implementation, a waste storage box 190 is provided in the inner cavity of the base 10 for storing waste obtained by thread rolling.

[0035] Its working principle is as follows: the aluminum casing is placed in the cavity of the lower model cavity mechanism. At this time, the lifting plate is in a high position, and then the bottom stripping cylinder descends, and the multi-petal slider holds the outer frame of the aluminum casing. The bottom stripping cylinder drives the lifting plate to descend again, and then the lifting mechanism drives the lifting bottom plate to descend, so that the upper mold assembly descends as a whole. After the upper and lower molds are closed, the servo motor drives the power turntable to drive the lower model cavity mechanism to rotate. At this time, the lifting electric cylinder drives the two sets of rolling wheels to expand radially synchronously, so that the aluminum casing rotates while completing the internal rolling. After the internal rolling is completed, the lifting electric cylinder resets, the power turntable stops rotating, the lifting mechanism drives the lifting bottom plate to rise, the multi-petal slider detaches from the aluminum casing, the bottom stripping cylinder lifts the aluminum casing, takes away the aluminum casing, and performs the internal thread rolling operation of the next aluminum casing.

[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. An aluminum casing thread rolling machine, characterized in that: It includes: The whole machine frame comprises a base and an upper frame enclosure, wherein a processing cavity is formed in the upper frame enclosure, and at least one side of the upper frame enclosure is open to form a material taking and unloading port; The upper die assembly includes a lifting base plate, a vertical frame, a lifting electric cylinder, an upper die seat, and a rolling wheel group. The vertical frame is arranged at the center of the lifting base plate, the upper die seat is arranged in the vertical frame, and the rolling wheel group is arranged on the upper die seat. The rolling wheel group includes two groups of rolling wheels located at both ends of the same radial position. The lifting electric cylinder is arranged on the upper part of the vertical frame, and the lifting electric cylinder drives the two groups of rolling wheels to synchronously expand or contract radially. and a lower mold assembly, which includes a lower mold plate, a lower mold base, a lower mold cavity mechanism, a bottom stripping cylinder, a power turntable, and a servo motor; An upper fixed plate is integrated on the processing cavity, and a supporting plate is arranged on the overall frame corresponding to the bottom of the processing cavity. The linear lifting end of the lifting mechanism is connected to the lifting bottom plate, and the lifting mechanism drives the lifting bottom plate to lift and lower. The supporting plate is provided with a avoidance hole corresponding to the position of the lower mold assembly, and the lower mold plate is fixedly mounted on the supporting plate. A multi-petal slider is arranged in the lower model cavity mechanism, and a lifting plate is arranged on the central bottom of the lower model cavity mechanism, and the lifting plate is connected to the bottom stripping cylinder located in the base, and the bottom of the lower model cavity mechanism is connected to the output end of the power turntable, and the servo motor is connected to the power turntable.

2. The aluminum casing thread rolling machine according to claim 1, characterized in that: The rolling wheel group includes two groups of rolling wheels, a driving vertical rod, and two groups of connecting rod structures, each group of connecting rod mechanisms includes an upper connecting rod and a lower connecting rod, and a vertical connecting rod is provided through the central axis of each group of rolling wheels. The rolling wheels are located at a fixed position in the height direction of the vertical connecting rod and are freely rotatable. The upper end of each group of the vertical connecting rods is pivotally connected to one end of the upper connecting rod on the corresponding side, and the lower end of each group of the vertical connecting rods is pivotally connected to one end of the lower connecting rod on the corresponding side. The inner ends of the upper connecting rods on both sides are pivotally connected to the upper pivot point of the driving vertical rod, and the inner ends of the lower connecting rods on both sides are pivotally connected to the lower pivot point of the driving vertical rod. The top of the driving vertical rod is fixedly connected to a lifting electric cylinder, and the driving vertical rod is lifted and lowered along the vertical track of the upper mold base, so that the lifting electric cylinder drives the two groups of rolling wheels to synchronously expand or contract radially.

3. The aluminum casing thread rolling machine according to claim 1, characterized in that: The lifting mechanism includes two groups of servo screw modules, each group of servo screw modules includes a lower servo motor and a screw, the two groups of screws are respectively threadedly connected to the corresponding middle parts of the two sides of the lifting base plate, and the top of each group of screws is respectively installed at the corresponding position of the upper fixed plate through bearings.

4. The aluminum casing thread rolling machine according to claim 3, characterized in that: Vertical guide columns are also arranged between the four corners of the lifting base plate and the supporting plate.

5. The aluminum casing thread rolling machine according to claim 1, characterized in that: Vertical guide columns are also arranged between the four corners of the lifting base plate and the supporting plate.

6. The aluminum casing thread rolling machine according to claim 1, characterized in that: The lower die base is also provided with a plurality of upper convex positioning cavities, and the lower surface of the upper die base is provided with a plurality of lower convex alignment columns, which are inserted into the upper convex positioning cavities in the mold closing state.

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