Cutting limiting device for spinning

Abstract

The utility model discloses a cutting limiting device for spinning, which is characterized in that the cutting limiting device for spinning comprises a core shaft, and a plurality of open grooves which are uniformly distributed on the circumference of the core shaft are formed in the wall surface of the core shaft; the inner shaft is located in the core shaft and can linearly move in the axis direction of the core shaft, the front end of the inner shaft is connected with a moving head, and the moving head is provided with containing grooves with the number consistent with that of the open grooves; the supporting arm is located in the containing groove; a connecting rod is arranged in the containing groove, and a strip hole for the connecting rod to penetrate through is formed in the supporting arm. The supporting arm extends into the open groove and is hinged to the groove wall of the open groove. And the supporting arm turns out of or turns back to the open groove under the movement of the moving head. The utility model provides a cutting limiting device for spinning. A cut circular ring is limited in an area between a mandrel and a supporting arm.

Description

Technical Field

[0001] The utility model relates to the technical field of spinning, in particular to a cutting limit device for spinning. Background Art

[0002] Spinning is to fix a thin flat plate or hollow blank on the die of the spinning machine. While the blank rotates with the spindle of the machine tool, a spinning wheel or a driving rod is used to pressurize the blank to produce local plastic deformation. Spinning can complete the complex geometric features of various complex sheet metal workpieces. It is particularly suitable for sheet metal forming. The spinning method can be used to complete the geometric features of complex sheet metal workpieces such as drawing, flanging, shrinking, bulging and curling. Due to its unique advantages, spinning is easy to achieve lightweight, flexible and efficient products, and it is particularly valued in the processing of many parts. In the processing method of the inlet and outlet cones of the automobile purifier, concentric products use the spinning process.

[0003] In the prior art, the current spinning device forms the workpiece by applying pressure to the workpiece. After the forming is completed, the excess part of the pipe end is cut off by a cutter, so that the workpiece is cut to a predetermined size. However, when the cutting knife of the cutting mechanism cuts the pipe end, the lack of support for the pipe end can easily lead to cutting deformation of the pipe end during cutting, and the ring is prone to move back and forth on the core shaft after falling off. The displacement of the movement is too large, which can easily cause the equipment to shut down. Utility Model Content

[0004] An object of the present invention is to solve at least the above problems and / or disadvantages and to provide at least the advantages to be described below.

[0005] In order to solve the deficiencies of the prior art, the utility model provides a cutting limit device for spinning, comprising:

[0006] A mandrel, the wall of which is provided with a plurality of slots evenly distributed on the circumference of the mandrel;

[0007] An inner shaft is located inside the mandrel and can move linearly along the axis of the mandrel, and the front end of the inner shaft is connected to a moving head, and the moving head is provided with receiving grooves having the same number as the grooves;

[0008] The support arm is located in the accommodating groove; a connecting rod is arranged in the accommodating groove, and a bar hole is opened on the support arm for the connecting rod to pass through; the support arm extends into the slot and is hingedly connected to the slot wall; the support arm flips out of or back into the slot under the movement of the moving head.

[0009] Furthermore, the number of the support arms is 4.

[0010] Furthermore, the support arm has a support surface and a clearance surface, the angle between the support surface and the clearance surface is an acute angle, and the support surface and the clearance surface are not parallel to the central axis of the moving head when the support arm is flipped back into the slot.

[0011] Furthermore, a processing groove is opened on the circumferential surface of the moving head, and the ends of the connecting rods respectively pass through the moving head and are located in the processing groove.

[0012] Furthermore, it also includes a limiting sleeve, which is arranged on the outside of the core shaft; the limiting sleeve includes a horizontal section and a tapered section, and the front end of the tapered section is connected to the horizontal section.

[0013] Furthermore, the driving device comprises:

[0014] A support frame movable on a linear guide;

[0015] A guide cylinder, the rear end of which is fixed on the support frame, and the front end is connected to the limit sleeve; a mandrel connecting shaft that can move along the central axis of the guide cylinder is arranged in the guide cylinder, and the mandrel connecting shaft is connected to the rear end of the mandrel; the mandrel extends out or retracts to the limit sleeve under the movement of the mandrel connecting shaft;

[0016] The inner shaft connecting shaft is slidably located in the core shaft connecting shaft; and the inner shaft connecting shaft is connected to the inner shaft end to drive the inner shaft to move.

[0017] Furthermore, the end of the core shaft connecting shaft passes through the guide cylinder and is fixedly connected to the movable vertical plate, and the upper part of the movable vertical plate is connected to the output end of the first linear driving member; a horizontal plate is fixed to the lower part of the movable vertical plate, and a second linear driving member is fixed on the horizontal plate, and the output end of the second linear driving member transversely passes through the horizontal plate and is connected to the end of the inner shaft connecting shaft passing through the core shaft connecting shaft.

[0018] The utility model includes at least the following beneficial effects: the slot on the core shaft is used to accommodate the support arm in a retracted state; when the inner shaft moves along the axial direction of the core shaft, the bar hole cooperates with the connecting rod to make the support arm flip around the hinge point between it and the slotted groove wall, so that the support arm flips out of the slot and contacts the inner wall of the workpiece tube end, playing a role in supporting the workpiece tube mouth, thereby providing support when the cutting knife cuts the workpiece tube mouth, reducing deformation of the pipe section when the cutting knife cuts, and further facilitating the cutting of excess parts of the workpiece tube end; the cut excess ring falls on the position on the support bar or the core shaft, so that the excess ring is restricted to the position between the core shaft and the support bar, which is beneficial to protecting the formed workpiece, reducing the chance of the excess ring colliding with the formed workpiece, and avoiding the ring directly moving from the core shaft to the back of the core shaft to cause abnormal shutdown, thereby reducing the probability of abnormal shutdown and improving processing efficiency.

[0019] The utility model has the advantages of simple structure, convenient adjustment, simple operation and strong practicality. When cutting, the excess ring cut off by the flipped slotted support arm falls on the position on the support bar and the core shaft, so that the excess ring is restricted to the position between the core shaft and the support bar, which is beneficial to protecting the formed workpiece, reducing the chance of the excess ring colliding with the formed workpiece, and also reducing the probability of abnormal shutdown. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a cutting limit device for spinning of the utility model.

[0021] Figure 2 It is a structural schematic diagram of the motion head of the utility model.

[0022] Figure 3 It is a structural schematic diagram of the driving device of the utility model.

[0023] Figure 4 It is a structural schematic diagram of the limiting sleeve of the utility model.

[0024] Figure 5 The utility model Figure 4 Schematic diagram of the locally enlarged structure of A in the middle.

[0025] Figure markings: 100-core shaft, 110-slot, 200-inner shaft, 210-moving head, 211-accommodating groove, 212-processing groove, 300-support arm, 310-bar hole, 320-support surface, 330-yield surface, 400-connecting rod, 500-limiting sleeve, 510-horizontal section, 520-conical section, 600-driving device, 610-support frame, 611-linear guide rail, 620-guide cylinder, 630-core shaft connecting shaft, 640-inner shaft connecting shaft, 650-movable vertical plate, 660-first linear driving member, 670-horizontal plate, 680-second linear driving member, 651-guide cross bar. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0027] It should be understood that terms such as “having”, “including” and “comprising” used herein do not specify the existence or addition of one or more other elements or combinations thereof.

[0028] See also Figures 1 to 5 , a cutting limit device for spinning, comprising:

[0029] The mandrel 100 has a wall surface provided with a plurality of slots 110 evenly distributed on the circumference of the mandrel 100;

[0030] The inner shaft 200 is located inside the core shaft 100 and can move linearly along the axis direction of the core shaft 100, and the front end of the inner shaft 200 is connected to the moving head 210, and the moving head 210 is provided with receiving grooves 211 having the same number as the grooves 110;

[0031] The support arm 300 is located in the accommodating groove 211. Furthermore, the number of the support arms 300 is 4. A connecting rod 400 is arranged in the accommodating groove 211, and a strip hole 310 is opened on the support arm 300 for the connecting rod 400 to pass through. The support arm 300 extends into the slot 110 and is hingedly connected to the slot wall of the slot 110. The support arm 300 is flipped out of or back into the slot 110 under the movement of the moving head 210, and the setting of the strip hole 310 enables the support arm 300 to be flipped smoothly.

[0032] Specifically, the slot 110 on the core shaft 100 is used to accommodate the support arm 300 in a retracted state; when the inner shaft 200 moves along the axial direction of the core shaft 100, the bar hole 310 cooperates with the connecting rod 400 to make the support arm 300 flip around the hinge point between it and the groove wall of the slot 110, so that the support arm 300 flips out of the slot 110 and contacts the inner wall of the workpiece pipe end, playing a role in supporting the pipe mouth of the workpiece, thereby providing support when the cutting knife cuts the pipe mouth of the workpiece, reducing deformation of the pipe section when the cutting knife cuts, and further facilitating the cutting of excess parts of the workpiece pipe end; the cut excess ring falls on the position on the support bar or the core shaft, so that the excess ring is restricted to the position between the core shaft and the support bar, which is beneficial to protecting the formed workpiece, reducing the chance of the excess ring colliding with the formed workpiece, and avoiding the ring directly moving from the core shaft to the back of the core shaft to cause abnormal shutdown, thereby reducing the probability of abnormal shutdown and improving processing efficiency.

[0033] In the above embodiment, the support arm 300 has a support surface 320 and a clearance surface 330, and the included angle between the support surface 320 and the clearance surface 330 is an acute angle, and the support surface 320 and the clearance surface 330 are not parallel to the central axis of the moving head 210 when the support arm 300 is flipped back into the slot 110. Specifically, the support surface 320 is tilted downward when the support arm 300 is flipped back into the slot 100, so that the core shaft 100 and the inner shaft 200 are extended into the pipe mouth of the workpiece together to facilitate entering the pipe hole of the workpiece when receiving the material. The setting of the clearance surface 330 can make room for the cutting knife during cutting.

[0034] In the above embodiment, a processing groove 212 is opened on the circumferential surface of the moving head 210, and the ends of the connecting rods 400 respectively pass through the moving head 210 and are located in the processing groove 212. The setting of the processing groove 212 facilitates processing.

[0035] In the above embodiment, a limiting sleeve 500 driven to move by a driving device 600 is also included, and the limiting sleeve 500 is sleeved on the outside of the mandrel 100; the limiting sleeve 500 includes a horizontal section 510 and a tapered section 520, and the front end of the tapered section 520 is connected to the horizontal section 510. The setting of the limiting sleeve 500 plays a main limiting role. When the workpiece is loaded, the clamping die is pre-clamped, and the driving device 600 drives the guide cylinder 620 to move together with the limiting sleeve 500 to extend into the workpiece and contact the workpiece to play a main limiting role, so that the clamping die can fix the workpiece;

[0036] It is worth noting that the diameter of the conical section 520 gradually increases from approaching the workpiece to moving away from the workpiece. When the remaining annular waste material moves on the core shaft 100 to the limiting sleeve 500, the conical section 520 is designed to prevent the annular waste material from exceeding the surface of the conical section 520 after being cut off, thereby limiting the position of the annular waste material between the conical section 520 and the support arm 300 flipped out of the core shaft 100, thereby limiting the range of movement of the annular waste material.

[0037] Furthermore, the driving device 600 provides a power source. Specifically, the driving device 600 includes: a support frame 610 that can move on the linear guide rail 611. The movement of the support frame 610 on the linear guide rail 611 can adopt any linear motion method in the prior art. No specific restrictions are made here. As long as the support frame 810 can make a linear reciprocating motion along the linear guide rail 811, the movement of the support frame 610 can drive the limit sleeve 500 to move; a guide cylinder 620, the rear end of which is fixed on the support frame 610, and the front end is connected to the limit sleeve 500. The cylinder 620 passes through the center of the spinning mechanism (chuck component) of the spinning machine, and the limit sleeve 500 faces the workpiece; a core shaft connecting shaft 630 that can move along the central axis of the guide cylinder 620 is arranged in the guide cylinder 620, and the core shaft connecting shaft 630 is connected to the rear end of the core shaft 100; the core shaft 100 extends out or retracts to the limit sleeve 500 under the movement of the core shaft connecting shaft 630; the inner shaft connecting shaft 640 is slidably located in the core shaft connecting shaft 630; and the inner shaft connecting shaft 640 is connected to the end of the inner shaft 200 to drive the inner shaft 200 to move.

[0038] Furthermore, the end of the core shaft connecting shaft 630 passes through the guide cylinder 620 and is fixedly connected to the movable vertical plate 650, and the upper part of the movable vertical plate 650 is connected to the output end of the first linear drive member 660; a horizontal plate 670 is fixed to the lower part of the movable vertical plate 650, and a second linear drive member 680 is fixed on the horizontal plate 670, and the output end of the second linear drive member 680 passes horizontally through the horizontal plate 670 and is connected to the end of the inner shaft connecting shaft 640 passing through the core shaft connecting shaft 630. In order to ensure the stable movement of the movable vertical plate 650, a guide cross bar 651 can be installed on the support frame 610, and the movable vertical plate 850 is slidably arranged on the guide cross bar 651; it can be understood that the first linear drive member 851 and the second linear drive member 861 can be cylinders or electric telescopic rods, as long as they can be linearly driven; when in use,

[0039] When the spinning is completed and the cutting is performed, the first linear drive member 660 drives the movable vertical plate 650 to move, and the movable vertical plate 650 moves and then drives the core shaft connecting shaft 630 to move in the guide cylinder 620, so that the core shaft 100 extends from the limit sleeve 500 into the inside of the workpiece pipe mouth. At this time, the movable vertical plate 650 drives the horizontal plate 670 and the second linear drive member 680 to move as a whole, so that the core shaft 100 moves and then drives the inner shaft 200 to move as a whole, and then the second linear drive member 680 drives the inner shaft connecting shaft 640 to move, and the inner shaft connecting shaft 640 drives the inner shaft 20 0 moves inside the core shaft 100, so that the support arm 300 opens and contacts the inner wall of the pipe mouth of the workpiece to achieve the limit of the pipe mouth, and then the cutting knife of the cutting mechanism cuts the pipe mouth, and the cut ring falls down and is caught by the support arm 300 or the core shaft 100. When receiving the material, the second linear drive member 680 drives the inner shaft connecting shaft 640 to move in the opposite direction, and the inner shaft connecting shaft 640 drives the inner shaft 200 to move in the opposite direction inside the core shaft 100, and the support arm 300 flips back to the inside of the slot 110 to release the limit on the remaining ring, and the ring falls onto the receiving plate of the receiving device.

[0040] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation scheme. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described here. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention.

Claims

1. A cutting limiter for spinning, characterized in that: include: A core shaft (100) having a wall surface provided with a plurality of slots (110) evenly distributed on the circumference of the core shaft (100); An inner shaft (200) is located inside the core shaft (100) and can move linearly along the axis direction of the core shaft (100), and the front end of the inner shaft (200) is connected to a moving head (210), and the moving head (210) is provided with receiving grooves (211) having the same number as the grooves (110); The support arm (300) is located in the accommodating groove (211); a connecting rod (400) is arranged in the accommodating groove (211), and a bar hole (310) is opened on the support arm (300) for the connecting rod (400) to pass through; the support arm (300) extends into the slot (110) and is hingedly connected to the slot wall of the slot (110); the support arm (300) is turned out of or back into the slot (110) under the movement of the moving head (210).

2. A cutting limiter for spinning according to claim 1, characterized in that: The number of the support arms (300) is four.

3. A cutting limiter for spinning according to claim 1, characterized in that: The support arm (300) comprises a support surface (320) and a clearance surface (330), the angle between the support surface (320) and the clearance surface (330) is an acute angle, and the support surface (320) and the clearance surface (330) are not parallel to the central axis of the moving head (210) when the support arm (300) is turned back into the slot (110).

4. A cutting limiter for spinning according to claim 1, characterized in that: A processing groove (212) is formed on the circumferential surface of the moving head (210), and the ends of the connecting rods (400) respectively pass through the moving head (210) and are located in the processing groove (212).

5. A cutting limiter for spinning according to claim 1, characterized in that: It also includes a limiting sleeve (500) driven to move by a driving device (600), wherein the limiting sleeve (500) is sleeved on the outside of the core shaft (100); the limiting sleeve (500) includes a horizontal section (510) and a conical section (520), wherein the front end of the conical section (520) is connected to the horizontal section (510).

6. A cutting limiter for spinning according to claim 5, characterized in that: The driving device (600) comprises: A support frame (610) movable on a linear guide rail (611); A guide cylinder (620), the rear end of which is fixed on the support frame (610), and the front end of which is connected to the limiting sleeve (500); a core shaft connecting shaft (630) movable along the central axis of the guide cylinder (620) is arranged in the guide cylinder (620), and the core shaft connecting shaft (630) is connected to the rear end of the core shaft (100); the core shaft (100) extends out or retracts to the limiting sleeve (500) under the movement of the core shaft connecting shaft (630); The inner shaft connecting shaft (640) is slidably located inside the core shaft connecting shaft (630); and the inner shaft connecting shaft (640) is connected to the end of the inner shaft (200) to drive the inner shaft (200) to move.

7. A cutting limiter for spinning according to claim 6, characterized in that: The end of the core shaft connecting shaft (630) passes through the guide cylinder (620) and is fixedly connected to the movable vertical plate (650), and the upper part of the movable vertical plate (650) is connected to the output end of the first linear driving member (660); a horizontal plate (670) is fixed to the lower part of the movable vertical plate (650), and a second linear driving member (680) is fixed on the horizontal plate (670), and the output end of the second linear driving member (680) passes through the horizontal plate (670) horizontally and is connected to the end of the inner shaft connecting shaft (640) passing through the core shaft connecting shaft (630).

Images