Device for trimming seam allowance

Abstract

The utility model discloses seam allowance trimming equipment. The seam allowance trimming equipment comprises a rack, a lifting mechanism, a positioning turntable assembly, a guide tool and a cutter mechanism, the lifting mechanism is connected into the machine frame, the positioning rotary disc assembly is connected with a movable plate of the lifting mechanism, the guiding tool is connected with a fixed plate of the lifting mechanism, the positioning rotary disc assembly and the guiding tool are arranged in an up-down spaced mode, the cutter mechanism is connected with the top face of the fixed plate of the lifting mechanism, and the cutter mechanism is connected with the top face of the fixed plate of the lifting mechanism. And a trimming knife of the cutter mechanism faces the guide tool. The automatic trimming machine has the advantages that only manual feeding and discharging are needed, the trimming efficiency is high, the consistency is high, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of air shock-absorbing spring manufacturing, in particular to a cutting device for trimming a spring mouth. Background Art

[0002] After the rubber bladder of the shock absorber spring is vulcanized, there will be a layer of flash at the upper and lower ends. To ensure the subsequent assembly, the flash must be cleaned and the size of the spigot must be guaranteed after trimming.

[0003] The current process requires the operator to hold the product in their left hand and the trimming shears in their right hand, rotating the product and pulling out the fringe waste while trimming to size. Careful attention must be paid to the operator's hand speed. Any over-cutting will result in the entire product being scrapped, resulting in high scrap costs (each bladder costs 250 yuan). Incomplete trimming will result in the spigot size not meeting the requirements for subsequent assembly, necessitating rework and repair. The entire process relies heavily on experience and personnel, so skilled operators are generally employed. This results in low trimming efficiency and a low pass rate, impacting delivery schedules.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art known to those skilled in the art. Utility Model Content

[0005] The technical problem to be solved by the utility model is how to solve the problem that the flash edges of the upper and lower ports of the bladder are manually trimmed in the current manner, the whole process is highly dependent on personnel, and the trimming efficiency and qualified rate are low.

[0006] The utility model solves the above technical problems through the following technical means:

[0007] The device for trimming and cutting spouts includes a frame, a lifting mechanism, a positioning turntable assembly, a guide tooling, and a cutter mechanism; the lifting mechanism is connected inside the frame, the positioning turntable assembly is connected to the movable plate of the lifting mechanism, the guide tooling is connected to the fixed plate of the lifting mechanism, the positioning turntable assembly and the guide tooling are arranged with an interval between the upper and lower parts, the cutter mechanism is connected to the top surface of the fixed plate of the lifting mechanism, and the trimming blade of the cutter mechanism faces the guide tooling.

[0008] In this utility model, the bottom end of the bladder is positioned using a positioning turntable assembly. A lifting mechanism then raises the positioning turntable assembly on the movable plate, along with the bladder, to the top end of the bladder, where it is positioned by a guide fixture. The positioning turntable assembly then rotates the bladder, causing the cutting mechanism to align the trimming blade with the flash at the bladder's end, whereupon the trimming blade completes the trimming. In this utility model, the positioning turntable assembly and the guide fixture compress and rotate the bladder, achieving smooth and consistent trimming of the flash at the bladder's end. This utility model only requires manual loading and unloading, resulting in high trimming efficiency and convenient operation.

[0009] Preferably, the lifting mechanism includes a lifting motor, a screw rod, a movable plate, a fixed plate, and a guide column; the bottoms of the multiple guide columns are fixedly connected to the inner bottom surface of the frame, the fixed plate is connected to the multiple guide columns, the lifting motor is connected to the fixed plate, the driving end of the lifting motor is connected to the top of the screw rod, the bottom of the screw rod is rotatably connected to the bottom surface of the frame, the movable plate is connected to the screw rod through a screw nut, and the movable plate is slidably connected to the guide column.

[0010] Preferably, the positioning turntable assembly includes a drive motor and a positioning turntable body, a fixed end of the drive motor is connected to the bottom of the movable plate of the lifting mechanism, and an output end of the drive motor is connected to the positioning turntable body.

[0011] Preferably, the top surface of the positioning turntable body has an annular groove.

[0012] The annular groove can position the bottom of the bladder, so that the driving motor drives the positioning turntable body to rotate and drives the bladder to rotate at the same time.

[0013] Preferably, the guide tooling includes a tooling fixing plate, a guide cylinder, and a connecting nut; the fixing plate is provided with a mounting hole, the tooling fixing plate is fixed on the mounting hole, the middle part of the tooling fixing plate is open, the inner wall of the opening includes at least three cantilevers extending toward the center, the guide cylinder passes through the cantilever and is connected to the connecting nut, the guide cylinder is located on the bottom surface of the cantilever, and at least three guide cylinders are located in the same circumscribed circular surface.

[0014] Preferably, the cantilever includes a plurality of first connection holes for mounting the guide cylinder, and the plurality of first connection holes are distributed along the radial direction of the tooling fixing plate.

[0015] The radial distribution of the multiple first connection holes can adapt to bladders of different sizes and has good adaptability.

[0016] Preferably, the cutting mechanism includes an X-axis assembly, a rotating assembly, a Z-axis assembly, and a shearing knife. The X-axis assembly capable of moving horizontally is connected to the top surface of the fixed plate, the Z-axis assembly is connected to the X-axis assembly through the rotating assembly, and the shearing knife is installed at the end of the Z-axis assembly.

[0017] The shearing knife can move horizontally and obliquely downward to reasonably control the amount of cutting burrs and ensure the size of the sub-mouth.

[0018] Preferably, the method further comprises installing a grating connected to the frame.

[0019] Preferably, a position sensor is further included, and the position sensor is connected to the bottom surface of the fixing plate.

[0020] Preferably, it further comprises an electric control box, which is electrically connected to the lifting mechanism, the positioning turntable assembly, and the cutter mechanism, and is connected to the inside of the frame.

[0021] The trimming process can be controlled through the electric control box to ensure the stability of process quality and reduce the complete dependence on personnel skills.

[0022] The advantages of the present invention are:

[0023] In this utility model, the bottom end of the bladder is positioned using a positioning turntable assembly. A lifting mechanism then raises the positioning turntable assembly on the movable plate, along with the bladder, to the top end of the bladder, where it is positioned by a guide fixture. The positioning turntable assembly then rotates the bladder, causing the cutting mechanism to align the trimming blade with the flash at the bladder's end, whereupon the trimming blade completes the trimming. In this utility model, the positioning turntable assembly and the guide fixture compress and rotate the bladder, achieving smooth and consistent trimming of the flash at the bladder's end. This utility model only requires manual loading and unloading, resulting in high trimming efficiency and convenient operation.

[0024] The annular groove can position the bottom of the bladder, so that the driving motor drives the positioning turntable body to rotate and drives the bladder to rotate at the same time.

[0025] The radial distribution of the multiple first connection holes can adapt to bladders of different sizes and has good adaptability.

[0026] The trimming process can be controlled through the electric control box to ensure the stability of process quality and reduce the complete dependence on personnel skills. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of a device for trimming and cutting a spout according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic structural diagram of a device for trimming and cutting a spout according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic structural diagram of the positioning turntable assembly, guide fixture and cutter mechanism of an embodiment of the utility model;

[0030] Figure 4This is a schematic structural diagram of the positioning turntable assembly, guide fixture and cutter mechanism of an embodiment of the utility model;

[0031] Figure 5 This is a schematic structural diagram of the embodiment of the utility model when the bladder is positioned;

[0032] Figure 6 This is a schematic structural diagram of the cutter mechanism of an embodiment of the utility model;

[0033] Figure 7 This is a schematic structural diagram of the cutter mechanism of an embodiment of the utility model;

[0034] Figure 8 This is a schematic structural diagram of a guide tooling according to an embodiment of the present utility model;

[0035] Numbers in the figure:

[0036] 1. Frame;

[0037] 2. Lifting mechanism; 21. Lifting motor; 22. Screw; 23. Movable plate; 24. Fixed plate; 25. Guide column;

[0038] 3. Positioning turntable assembly; 31. Driving motor; 32. Positioning turntable body;

[0039] 4. Guide tooling; 41. Tooling fixing plate; 42. Guide cylinder; 43. Connecting nut; 44. Cantilever; 45. First connecting hole;

[0040] 5. Cutter mechanism; 51. X-axis assembly; 52. Rotation assembly; 53. Z-axis assembly; 54. Shear knife;

[0041] 6. Safety light grid; 7. Electric control box; 8. Leather bag. DETAILED DESCRIPTION

[0042] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0043] Example 1:

[0044] like Figure 1 、 Figure 2As shown, the trimming and cutting device includes a frame 1, a lifting mechanism 2, a positioning turntable assembly 3, a guide tooling 4, and a cutting mechanism 5; the lifting mechanism 2 is connected in the frame 1, the positioning turntable assembly 3 is connected to the movable plate 23 of the lifting mechanism 2, the guide tooling 4 is connected to the fixed plate 24 of the lifting mechanism 2, the positioning turntable assembly 3 and the guide tooling 4 are arranged with an interval between the upper and lower parts, and when working, there is a leather bag 8 between the positioning turntable assembly 3 and the guide tooling 4, the positioning turntable assembly 3 positions and fixes the leather bag 8, and the guide tooling 4 positions the leather bag 8, the cutting mechanism 5 is connected to the top surface of the fixed plate 24 of the lifting mechanism 2, and the trimming knife of the cutting mechanism 5 faces the guide tooling 4.

[0045] The frame 1, serving as the entire device's support and protective mechanism, consists of a steel frame and protective panels, forming a rectangular cavity. A window for mounting the bladder 8 can be left at the front, and safety gratings 6 are installed on both sides of the window. While the cutter mechanism 5 shears the flashing of the bladder 8, a person stands outside the safety gratings 6.

[0046] like Figure 3 、 Figure 4 As shown, the lifting mechanism 2 includes a lifting motor 21, a screw rod 22, a movable plate 23, a fixed plate 24, and a guide column 25; the bottom of the plurality of guide columns 25 is fixedly connected to the inner bottom surface of the frame 1. In this embodiment, there are four guide columns 25, and the four guide columns 25 form a rectangular array. Among them, the fixed plate 24 is fixedly connected to the top of the four guide columns 25, and the fixed connection method can be welding or bolt connection. The fixed end of the lifting motor 21 is connected to the top surface of the fixed plate 24, and the driving end of the lifting motor 21 is connected to the top of the screw rod 22. The bottom of the screw rod 22 can be rotatably connected to the bottom surface of the frame 1 through a bearing. The movable plate 23 is connected to the screw rod 22 through a screw nut and the four corners of the movable plate 23 are slidably connected to the guide columns 25. At the same time, a drag chain is provided on the side of the movable plate 23 to ensure stable lifting.

[0047] The lifting motor 21 drives the screw rod 22 to rotate, and the movable plate 23 can move up and down along the guide column 25.

[0048] The positioning turntable assembly 3 includes a drive motor 31 and a positioning turntable body 32. The fixed end of the drive motor 31 is connected to the bottom of the movable plate 23 of the lifting mechanism 2. The output end of the drive motor 31 passes through the movable plate 23 or is connected to the movable plate 23 via a bearing. The output end of the drive motor 31 is connected to the center of the positioning turntable body 32. When the drive motor 31 is in operation, it can drive the positioning turntable body 32 to rotate.

[0049] In this embodiment, the top surface of the positioning turntable body 32 has an annular groove. The annular groove can position the bottom of the bladder 8, so that the driving motor 31 drives the positioning turntable body 32 to rotate and drives the bladder 8 to rotate at the same time.

[0050] Specifically, the inner diameter of the annular groove is preferably larger than the inner diameter of the bottom port of the bladder 8, so as to achieve a transition or interference fit between the annular groove and the bladder, and the port of the bladder 8 can be stuck in the concave groove.

[0051] Of course, other methods can also be used to fix the bottom of the leather bag 8.

[0052] like Figure 5 As shown, the guide fixture 4 includes a fixture fixing plate 41, a guide cylinder 42, and a connecting nut 43. The fixing plate 24 defines a mounting hole, and the fixture fixing plate 41 is fixed to the mounting hole. The fixture fixing plate 41 is open in the middle, and the inner wall of the opening includes at least three cantilevers 44 extending toward the center. The guide cylinders 42 pass through the cantilevers 44 and connect to the connecting nut 43. The guide cylinders 42 are located on the bottom surfaces of the cantilevers 44, and each cantilever 44 is mounted with a guide cylinder 42. The outer circumferences of all guide cylinders 42 are located within the same circumscribed circular surface. When the bladder 8 rises to the guide fixture 4, the fixture fixing plate 41 can abut against the top of the bladder 8, while the guide cylinders 42 penetrate into the top of the bladder 8. Multiple guide cylinders 42 can be tangent to the inner wall of the top of the bladder 8, thereby positioning the bladder 8 and ensuring that the bladder 8 can rotate along its central axis during rotation, ensuring uniform flash removal.

[0053] This embodiment also includes a position sensor and an electrical control box 7. The position sensor is connected to the bottom surface of the fixing plate 24. It senses when the bladder 8 is in position and transmits a position signal to the electrical control box 7, thereby controlling the lifting motor 21 to stop and the drive motor 31 to start. The electrical control box 7 is electrically connected to the lifting mechanism 2, the positioning turntable assembly 3, and the cutting mechanism 5. The electrical control box 7 is connected to the interior of the frame 1. The electrical control box 7 controls the trimming process, ensuring process quality stability and reducing reliance on human skills.

[0054] like Figure 6 、 Figure 7 As shown, the cutter mechanism 5 includes an X-axis assembly 51, a rotating assembly 52, a Z-axis assembly 53, and a shearing knife 54. The X-axis assembly 51 capable of horizontal movement is connected to the top surface of the fixed plate 24 through a bracket, the Z-axis assembly 53 is connected to the X-axis assembly 51 through the rotating assembly 52, and the shearing knife 54 is installed at the end of the Z-axis assembly 53.

[0055] In this embodiment, the X-axis assembly 51 can be a mechanism capable of horizontal movement, such as a bidirectional pneumatic cylinder, a hydraulic cylinder, or an electric cylinder. This embodiment is not limited thereto, as long as it can achieve horizontal movement. The rotation assembly 52 is primarily used to achieve rotation of the Z-axis assembly 53 and even the shear shaft 54. Therefore, a rotating component such as a rotary motor can be selected. The Z-axis assembly 53 can also be a mechanism capable of axial movement, such as a bidirectional pneumatic cylinder, a hydraulic cylinder, or an electric cylinder.

[0056] It should be noted that in this embodiment, the Z-axis assembly 53 mainly realizes tilting and descending, and the X-axis assembly 51 can also realize Y-direction movement through the Y-axis assembly, which can be increased as needed.

[0057] In this embodiment, a protective cover may be added around the shearing knife 54 , and the protective cover may be fixed to the end of the Z-axis assembly 53 .

[0058] In this embodiment, the shearing knife 54 can realize horizontal and inclined downward movement, reasonably control the amount of cutting burrs, and ensure the size of the sub-mouth.

[0059] The working process of this embodiment:

[0060] The bottom of the leather bag 8 is manually placed on the positioning turntable body 32 , and the person stands outside the safety grating 6 .

[0061] At this point, the equipment is started, and the lifting motor 21 drives the movable plate 23, the positioning turntable assembly 3, and the bladder 8 to move synchronously upward. When the top opening of the bladder 8 enters the guide fixture 4, the top of the bladder 8 becomes tangent to the multiple guide cylinders 42. At this point, the position sensor receives a signal indicating that the bladder 8 is in position and transmits it to the electronic control box 7. The electronic control box 7 controls the drive motor 31, which rotates the positioning turntable body 32, driving the bladder 8. The cutter mechanism 5 follows a pre-set path, rotates a fixed angle, and then moves in the X direction and downward in the Z direction. The shear blade penetrates the rotating product's flash, which is then removed by the high-speed rotation.

[0062] After the cutting is completed, the cutter mechanism 5 returns to the origin, the skin bag 8 stops rotating, the lifting motor 21 drives the movable plate 23 to the initial position, and the product is manually turned over and placed in the positioning turntable body 32. The start button is pressed and the product cycles through the above steps again until the burrs at both ends of the skin bag 8 are cut off.

[0063] The above process involves the transmission of electrical signals, and conventional signal transmission and control processes in the prior art may be adopted, which will not be described in detail in this embodiment.

[0064] This embodiment uses the positioning turntable assembly 3 and the guide fixture 4 to compress and rotate the bladder 8, trimming the fins to a smooth and consistent finish. Only manual loading and unloading is required, resulting in high trimming efficiency and convenient operation. The trimmed fins are stable and controllable, ensuring consistent process quality. The trimming process is smooth, eliminating the need for manual skill. Manual personnel only need to turn the product and load and unload the materials, allowing one person to operate two machines, doubling productivity.

[0065] Example 2:

[0066] This embodiment is different from the first embodiment in that: Figure 8 As shown, the cantilever 44 includes a plurality of first connection holes 45 for mounting the guide cylinder 42 , and the plurality of first connection holes 45 are distributed along the radial direction of the tooling fixing plate 41 .

[0067] The radial distribution of the plurality of first connection holes 45 can adapt to the bladders 8 of different port sizes, and has good adaptability.

[0068] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. The equipment for trimming and cutting the spigot is characterized by: It includes a frame, a lifting mechanism, a positioning turntable assembly, a guide tooling, and a cutter mechanism; the lifting mechanism is connected inside the frame, the positioning turntable assembly is connected to the movable plate of the lifting mechanism, the guide tooling is connected to the fixed plate of the lifting mechanism, the positioning turntable assembly and the guide tooling are arranged with an interval between the upper and lower parts, the cutter mechanism is connected to the top surface of the fixed plate of the lifting mechanism, and the trimming blade of the cutter mechanism faces the guide tooling.

2. The nozzle trimming device according to claim 1, characterized in that: The lifting mechanism includes a lifting motor, a screw rod, a movable plate, a fixed plate, and a guide column; the bottoms of the multiple guide columns are fixedly connected to the bottom surface of the frame, the fixed plate is connected to the multiple guide columns, the lifting motor is connected to the fixed plate, the driving end of the lifting motor is connected to the top of the screw rod, the bottom of the screw rod is rotatably connected to the bottom surface of the frame, the movable plate is connected to the screw rod through a screw nut, and the movable plate is slidably connected to the guide column.

3. The nozzle trimming device according to claim 1, characterized in that: The positioning turntable assembly includes a driving motor and a positioning turntable body. The fixed end of the driving motor is connected to the bottom of the movable plate of the lifting mechanism, and the output end of the driving motor is connected to the positioning turntable body.

4. The nozzle trimming device according to claim 3, characterized in that: The top surface of the positioning turntable body is provided with an annular groove.

5. The nozzle trimming device according to claim 1, characterized in that: The guide tooling includes a tooling fixing plate, a guide cylinder, and a connecting nut; the fixing plate is provided with a mounting hole, the tooling fixing plate is fixed on the mounting hole, the middle part of the tooling fixing plate is open, the inner wall of the opening includes at least three cantilevers extending toward the center, the guide cylinder passes through the cantilever and is connected to the connecting nut, the guide cylinder is located on the bottom surface of the cantilever, and at least three guide cylinders are located in the same circumscribed circular surface.

6. The nozzle trimming device according to claim 5, characterized in that: The cantilever comprises a plurality of first connection holes for mounting the guide cylinder, and the plurality of first connection holes are distributed along the radial direction of the tooling fixing plate.

7. The nozzle trimming device according to claim 1, characterized in that: The cutter mechanism includes an X-axis assembly, a rotating assembly, a Z-axis assembly, and a shearing knife. The X-axis assembly capable of moving horizontally is connected to the top surface of the fixed plate, the Z-axis assembly is connected to the X-axis assembly through a rotating assembly, and the shearing knife is installed at the end of the Z-axis assembly.

8. The nozzle trimming device according to claim 1, characterized in that: It also includes installing a grating connected to the frame.

9. The nozzle trimming device according to claim 1, characterized in that: A position sensor is also included, and the position sensor is connected to the bottom surface of the fixing plate.

10. The nozzle trimming device according to claim 1, characterized in that: It also includes an electric control box, which is electrically connected to the lifting mechanism, the positioning turntable assembly, and the cutter mechanism, and is connected to the inside of the frame.

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