Material turnover device for cold header

Abstract

The present application relates to cold header technical field, specifically disclose a kind of material turnover device for cold header.The two sides of the mounting seat of the turnover device are provided with one mounting cavity respectively, the top of two mounting cavities is formed into first through-hole, spring is installed in first through-hole.The turnover device further includes two clamps and two pressing plates, clamp is respectively arranged in two mounting cavities, two pressing plates are respectively installed in two mounting cavities, the middle part of pressing plate is rotatably connected with mounting seat, the upper portion of pressing plate is used to abut spring, the lower portion of pressing plate is used to compress clamp.Under the state that the upper portion of pressing plate and spring abut, pressing plate will rotate around the middle part, so that the lower portion of pressing plate is tightly abutted on clamp, clamp can firmly clamp workpiece.In the case of only setting one spring, the width of mounting seat is greatly reduced at this time, in turn avoid mounting seat to impact rack in the process of rotating.

Description

Technical Field

[0001] This invention relates to the field of cold heading machine technology, and in particular to a material turning device for a cold heading machine. Background Technology

[0002] A cold heading machine is a stamping machine used in mechanical manufacturing to shape raw materials into the desired shape without altering them. During production, the cold heading machine clamps the material (such as copper wire or iron wire) into the mold position using grippers, and then stamps the material to shape it into the specified form.

[0003] A cold heading machine clamping device is disclosed in patent application CN201710948585.3, which uses the same clamping device as described in this application. Figure 11-13 The steering mechanism shown is similar to a tilting mechanism. (Combined) Figure 11-13 It is known that in this type of flipping device, two springs drive two clamps to hold the workpiece. When the springs are only of short length, the compression of the springs is insufficient, causing the clamps to fail to hold the workpiece properly. Therefore, as... Figure 11-13 The flipping device shown requires a spring of a certain length to be installed on each of the left and right sides of the clamp. When the spring has a certain length, it will result in a larger overall width of the clamping shaft. At this time, the clamping shaft may hit the machine frame during the process of rotating the workpiece.

[0004] Therefore, existing technologies still need to be improved and developed. Summary of the Invention

[0005] This invention discloses a material turning device for a cold heading machine, which improves the problem of easy impact on the mandrel.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A material turning device for a cold heading machine includes:

[0008] A flip-up mount for fixed connection to the frame;

[0009] The flip structure includes:

[0010] The rotating shaft is rotatably connected to the flipping seat; and

[0011] A mounting base is provided below the flip base. The rotating shaft is fixedly connected to the top of the mounting base. A mounting cavity is provided on each side of the mounting base, and the tops of the two mounting cavities are horizontally connected to form a first through hole.

[0012] The clamping structure includes:

[0013] A spring is installed inside the first through hole;

[0014] Two clips are respectively installed in two mounting cavities; and

[0015] Two pressure plates are installed in the two mounting cavities respectively. The upper part of the pressure plate abuts against and compresses the spring. The middle part of the pressure plate is rotatably connected to the mounting base. The lower part of the pressure plate is used to press the clamp. The friction between the clamp and the mounting base is greater than the weight of the clamp.

[0016] Preferably, the lower part of the pressure plate is provided with a protrusion, which is used to abut against the clamp.

[0017] Preferably, the clamping structure further includes a limiting block, which is installed in the mounting cavity and is used to limit the clamp to move only in the vertical direction.

[0018] Preferably, the flipping device further includes a pad, which is installed between the flipping seat and the frame.

[0019] Preferably, the clamp is provided with a ramp, which facilitates the entry of the workpiece.

[0020] Preferably, the flipping structure further includes a gear mounted on the rotating shaft, and the gear is an incomplete gear.

[0021] Preferably, the flipping structure further includes a sleeve, which is detachably mounted on the gear and is used to prevent slippage between the gear and the rotating shaft.

[0022] Preferably, the flipping structure further includes a pressure cap, which is detachably mounted on the flipping base and is used to prevent the mounting base from rotating.

[0023] Preferably, the upper and lower surfaces of the flipping seat form a second through hole, the rotating shaft is rotatably connected in the second through hole and extends downward through the second through hole, and a bearing is provided in the second through hole.

[0024] Preferably, the flip base is further provided with a weight reduction part, which is located in the middle of the flip base.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] This invention provides a material turning device for a cold heading machine. It features mounting cavities on both sides of a mounting base, which are connected to form a first through hole. A spring is installed within this first through hole. Two pressure plates are installed in each of the two mounting cavities. The upper parts of the pressure plates compress the springs, and the middle parts of the pressure plates are rotatably connected to the mounting base. Under the reaction force of the compressed springs, the lower parts of the two pressure plates move closer together, thus pressing two clamps installed in the mounting cavities to prevent them from falling off. When the clamps need to hold a workpiece, they only rotate at a small angle, and the clamps remain pressed firmly within the mounting cavities by the pressure plates. By replacing the two springs used to drive the clamps to hold the workpiece with a single spring, the required width of the mounting base is significantly reduced, preventing the mounting base from impacting the machine frame during rotation. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a material turning device provided in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the flipping structure of a material flipping device provided in an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the flipping structure of a material flipping device provided in an embodiment of the present invention;

[0030] Figure 4 An exploded view of a flipping device provided in an embodiment of the present invention;

[0031] Figure 5 An exploded view of a flipping device provided in an embodiment of the present invention;

[0032] Figure 6 An exploded view of a clamping structure and mounting base provided in an embodiment of the present invention;

[0033] Figure 7 An exploded view of a clamping structure and mounting base provided in an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the structure of a mounting base provided in an embodiment of the present invention;

[0035] Figure 9 This is a schematic diagram of the structure of a mounting base provided in an embodiment of the present invention;

[0036] Figure 10 This is a cross-sectional view of a clamping structure and mounting base provided in an embodiment of the present invention;

[0037] Figure 11 This is a schematic diagram of the structure of a flipping device in the prior art;

[0038] Figure 12 An exploded view of a tilting device in the prior art;

[0039] Figure 13 This is a partial cross-sectional view of a flipping device in the prior art.

[0040] Explanation of main component symbols: 10-flipping seat, 11-second through hole, 12-weight reduction part, 13-flange, 14-bearing, 20-flipping structure, 21-rotating shaft, 22-mounting seat, 221-mounting cavity, 222-first through hole, 23-pad, 24-gear, 25-expansion sleeve, 26-pressure cover, 27-nut, 30-clamping structure, 31-spring, 32-clamp, 321-sloping surface, 322-clamping hole, 33-pressure plate, 331-protrusion, 34-limiting block, 40-pin, C-workpiece; 1-first mounting seat, 2-first clamp, 3-first spring. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0043] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0044] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0045] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0046] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0047] Example

[0048] Cold heading machines are commonly used stamping machines in machinery manufacturing, used to shape raw materials into desired shapes without altering their original form. During production, the cold heading machine clamps the material (such as copper or iron wire) into the die using grippers, and then stamps the material to form the specified shape. For workpieces with different processing requirements, some workpieces need to be flipped during stamping. After flipping and stamping, the material can be stamped into the designed shape to obtain the product.

[0049] Patent application CN201710948585.3 discloses a cold heading machine clamping device, the flipping device used in which is consistent with the specification appended. Figure 11-13 The structures of the flipping devices shown are the same or similar. (Refer to...) Figure 11-13 The first mounting base 1, which is fixedly connected to the bottom surface of the rotating shaft of the flipping device, has holes on its left and right sides for installing the first spring 3. The bottom surface of the first mounting base 1 has holes for installing the first clip 2, and the hole on the left for installing the first spring 3 is connected to the hole on the right for installing the first clip 2.

[0050] like Figure 13 As shown, when the first spring 3 is installed on the first mounting base 1 and the end of the first spring 3 near the outer wall of the first mounting base 1 is fixed, the first spring 3 will drive the two first clips 2 to move closer to each other under the pressure state.

[0051] That is, when the workpiece is pushed between the two first clamps 2, the compressed first spring 3 gives the first clamp 2 a reaction force, at which point the two first clamps 2 move closer to each other, so that the workpiece can be well clamped.

[0052] As can be seen from its structure, when the workpiece enters between the two first clamps 2, the two first clamps 2 press against the first spring 3, causing the first spring 3 to compress. If the length of the two first springs 3 is too short, the compression of the first spring 3 will be insufficient, and the workpiece cannot enter between the two first clamps 2 normally. Therefore, the two first springs 3 on both sides of the first clamp 2 must have sufficient length so that the first spring 3 has a certain compression margin, thereby ensuring that the first clamp 2 can properly clamp the workpiece.

[0053] When the two first springs 3 have a certain length, compare Figure 1 and Figure 11 As can be seen from the mounting bracket A1 in the prior art, the mounting bracket A1 used in the prior art has a wider width. In the prior art, the mounting bracket A1 may collide with the frame during the flipping process of the workpiece by the flipping device.

[0054] Therefore, this application discloses a material turning device for a cold heading machine. The mounting base 22 of this turning device has a mounting cavity 221 on each side, and the tops of the two mounting cavities 221 are connected to form a first through hole 222. A spring 31 is installed in the first through hole 222. The turning device also includes two clamps 32 and two pressure plates 33. The clamps 32 are respectively disposed in the two mounting cavities 221, and the two pressure plates 33 are respectively installed in the two mounting cavities 221. The middle part of the pressure plate 33 is rotatably connected to the mounting base 22. The upper part of the pressure plate 33 abuts against the spring 31, and the lower part of the pressure plate 33 presses against the clamps 32. When the upper part of the pressure plate 33 abuts against the spring 31, the pressure plate 33 will rotate around its middle part, so that the lower part of the pressure plate 33 tightly abuts against the clamps 32, and the clamps 32 can firmly clamp the workpiece C. With only one spring 31, the width of the mounting base 22 is greatly reduced, thereby preventing the mounting base 22 from hitting the machine frame during rotation.

[0055] Specifically, please refer to Figure 1 and Figure 3 The material turning device for a cold heading machine provided by the present invention includes a turning base 10, which is used for fixed connection with the machine frame. A turning structure 20 is mounted on the turning base 10. The turning structure 20 includes a rotating shaft 21 and a mounting base 22, wherein the rotating shaft 21 is rotatably connected to the turning base 10, the mounting base 22 is disposed below the turning base 10, and the rotating shaft 21 is fixedly connected to the top of the mounting base 22. Figure 1 and Figure 2 When the rotating shaft 21 rotates relative to the flipping seat 10, the rotating shaft 21 will drive the mounting seat 22 to rotate synchronously. The mounting seat 22 is equipped with a clamping structure 30, which is used to clamp the workpiece C. When the mounting seat 22 rotates relative to the flipping seat 10, the clamping structure 30 also rotates relative to the flipping seat 10, thereby causing the workpiece C to also rotate.

[0056] Specifically, in one embodiment of the present invention, combined with Figure 8 and Figure 9 The mounting base 22 and the bottom surface of the rotating shaft 21 are fixedly connected, and a mounting cavity 221 is provided on both the left and right sides of the mounting base 22. The top of the two mounting cavities 221 are connected to form a first through hole 222.

[0057] Combination Figure 1 , Figure 3 and Figure 4 The clamping structure 30 includes a spring 31, two clips 32, and two pressure plates 33. The spring 31 is installed in the first through hole 222, the two clips 32 are respectively installed in the two mounting cavities 221, and the two pressure plates 33 are similarly installed in the two mounting cavities 221. Figure 10 The upper parts of both pressure plates 33 abut against the spring 31, the middle part of the pressure plate 33 is rotatably connected to the mounting base 22, and the lower part of the pressure plate 33 abuts against the clamp 32, so that the clamp 32 is pressed tightly against the mounting base 22. Figure 10 As shown, when the upper part of the pressure plate 33 presses the spring 31, the spring 31 applies a reaction force to the pressure plate 33. Based on the rotatable connection between the pressure plate 33 and the mounting base 22, the lower part of the pressure plate 33 tends to move closer to the clamp 32. The pressure plate 33 applies a pressure to the clamp 32, which causes a frictional force between the clamp 32 and the mounting base 22. When the frictional force is greater than the weight of the clamp 32, the clamp 32 will not fall off. At this time, the pressure plate 33 presses the clamp 32 firmly onto the mounting base 22.

[0058] In one embodiment of the present invention, the pressure plate 33 and the mounting base 22 are rotatably connected by a pin 40. The pin 40 connection ensures a stable connection between the two and facilitates disassembly. The pin 40 connection is only one technical solution disclosed in one embodiment of the present invention; the pressure plate and the mounting base can also be rotatably connected in other ways.

[0059] Of course, the sides of the mounting base 22 and the clip 32 that come into contact can be made into rough frosted surfaces, and the sides of the clip 32 that come into contact with the mounting base 22 can also be made into frosted surfaces, thereby giving the mounting base 22 and the clip 32 a larger coefficient of friction, and thus making the connection between the mounting base 22 and the clip 32 more stable.

[0060] It is important to note that, such as Figure 1 As shown, the two clamps 32 have a certain distance between them at the beginning. As long as the working parts used to clamp the workpiece C are slightly far apart, the workpiece C can be clamped. The clamps 32 will not rotate at a large angle relative to the mounting base 22. The clamps 32 can be well fixed on the mounting base 22 without sliding relative to the mounting base 22.

[0061] contrast Figure 10 and Figure 13 , Figure 10 In the middle, the width of the mounting base 22 is slightly greater than or equal to the length of the compressed spring 31 plus the thickness of the two pressure plates 33, while... Figure 13 The width of the first mounting base 1 shown is the sum of the length of the two first springs 3 after compression, plus the thickness of the two first clips 2 and the inner wall of the first mounting base 1. That is, the width of the first mounting base 1 in the patent application with patent number CN201710948585.3 is significantly larger than the width of the mounting base 22 disclosed in this application. In the aforementioned application, the first mounting base 1 may collide with the machine frame during the workpiece flipping process, while the mounting base 22 disclosed in this application can avoid this collision during rotation.

[0062] Combination Figure 3 and Figure 4 In one embodiment of the present invention, in order to enable the pressure block to better press the clamp 32, a protrusion 331 is provided at the lower part of the pressure block, and the protrusion 331 abuts against the clamp 32. Figure 10 Since the middle part of the pressure block is rotatably connected to the mounting base 22, when the pressure block is provided with the protrusion 331, the upper part of the pressure block will apply a greater clamping force to the spring 31. At this time, the force of the spring 31 acting on the pressure block is also greater, which in turn makes the clamp 32 and the mounting base 22 have a greater frictional force, further preventing the clamp 32 from slipping off the mounting base 22.

[0063] In one embodiment of the present invention, the shape of the protrusion 331 is not limited, but the protrusion 331 should preferably not obstruct the normal opening of the clip 32 and enable the clip 32 to be well clamped on the mounting base 22.

[0064] Combination Figure 3 and Figure 5 In one embodiment of the present invention, the flipping base 10 is provided with mounting holes for mounting bolts. The bolts pass through the mounting holes to fix the flipping base 10 to the frame, making it easy to install the entire flipping device onto the frame.

[0065] like Figure 5 As shown, in one embodiment of the present invention, the bottom of the flip base 10 protrudes to form a flange 13, which is perpendicular to the main body of the flip base 10. After the flange 13 protrudes, it can form a positioning surface with the frame, thereby making the installation of the flip base 10 more convenient.

[0066] Furthermore, in one embodiment of the present invention, combined with Figure 3 and Figure 5The flipping device also includes a pad 23, which is disposed between the flipping base 10 and the frame. The pad 23 is provided with holes that match the mounting holes so that the bolts that fix the flipping base 10 to the frame can pass through the pad 23, thereby preventing the pad 23 from shifting relative to the flipping base 10.

[0067] After the pad 23 is placed between the flipping seat 10 and the frame, the distance between the mounting seat 22 and the frame is greater, which greatly reduces the probability of the mounting seat 22 and the workpiece C colliding with the frame during rotation.

[0068] The number of spacers 23 is usually determined based on the actual products being produced. One, two, or several spacers 23 can be used. Of course, the length of the bolts that fix the tilting seat 10 to the frame needs to be adjusted accordingly based on the number of spacers 23.

[0069] In one embodiment of the present invention, the pad 23 may be a metal pad 23 or a plastic pad 23, and the material selected for the pad 23 is not limited here.

[0070] Preferably, in one embodiment of the present invention, a plastic pad 23 is selected to reduce the overall weight of the flipping device.

[0071] In one embodiment of the present invention, the clamping structure 30 further includes a limiting block 34, which is installed in the mounting cavities 221 on both sides. Figure 8 and Figure 9 The limiting block 34 is used to limit the clamp 32, so that the clamp 32 can only move in the vertical direction. For example, when the clamp 32 rotates, the whole is still in the vertical plane and will not tilt.

[0072] Specifically, in one embodiment of the present invention, each mounting cavity 221 may be provided with one limiting block 34. When one limiting block 34 is provided, the limiting block 34 is fixedly connected to the inner wall of the mounting base 22, and a sliding groove for the clamp 32 to slide is formed between the limiting block 34 and the inner wall of the mounting base 22.

[0073] Furthermore, in one embodiment of the present invention, as Figure 8 and Figure 9 As shown, each mounting cavity 221 can be provided with two limiting blocks 34. When two limiting blocks 34 are provided, the two limiting blocks 34 limit the clamp 32 in the middle position of the mounting cavity 221, and a sliding groove is formed between the two limiting blocks 34 for the clamp 32 to slide. When the clamp 32 is set in the middle position of the mounting cavity 221, the workpiece C on the clamp 32 will not get too close to the frame during the rotation of the clamp 32, further ensuring the stability of the clamp 32 during operation.

[0074] In one embodiment of the present invention, in order to facilitate the processing of the mounting cavity 221, the mounting cavity 221 is configured as n-shaped, and the lower opening of the mounting cavity 221 penetrates the bottom surface of the mounting base 22.

[0075] In one embodiment of the present invention, reference is made to... Figure 4 and Figure 7 , Figure 8 The clamp 32 is provided with an inclined surface 321, which facilitates the entry of the workpiece C. (Combined) Figure 1 and Figure 8 Each of the two clips 32 has two semi-circular holes, which are defined as clamping holes 322. (Comparison) Figure 7 and Figure 8 The inclined surface 321 is a platform structure located at both ends of the clamping hole 322. The diameter of the platform on both sides of the clamp 32 is larger than the diameter of the clamping hole 322 located in the middle of the clamp 32. (Refer to...) Figure 7 When workpiece C is pushed toward clamping hole 322, under the guidance of inclined surface 321, workpiece C smoothly slides into clamping hole 322.

[0076] Preferably, in one embodiment of the present invention, the inclined surface 321 is usually set as a frustum-shaped inclined surface 321. The relative movement between the frustum-shaped inclined surface 321 and the workpiece C is the smoothest, and the workpiece C will not get stuck in the gap, so that the workpiece C can enter the clamping hole 322 more smoothly.

[0077] Specifically, in one embodiment of the present invention, referring to Figure 4 The flipping structure 20 also includes a gear 24, which is mounted on the rotating shaft 21. The gear 24 is an incomplete gear, used to connect with the complete drive structure. When the drive structure drives the gear 24 to rotate, the rotation of the gear 24 causes the rotating shaft 21 to rotate, thereby causing the workpiece C to flip. The gear 24 is set as an incomplete gear to ensure that it does not interfere with the continuous flipping gears on the frame.

[0078] In one embodiment of the present invention, after the gear 24 and the shaft 21 are installed in place, they can be fixed together by splines or other means.

[0079] Preferably, in one embodiment of the present invention, reference is made to... Figure 4 The flipping structure 20 also includes a sleeve 25, which is detachably mounted on the gear 24. The sleeve 25 prevents slippage between the gear 24 and the shaft 21. Figure 5 The flipping structure 20 and the gear 24 are connected by bolts. After the expansion sleeve 25 prevents the gear 24 and the rotating shaft 21 from rotating, the gear 24 and the expansion sleeve 25 are fixed with bolts. Fixing the gear 24 and the rotating shaft 21 with the expansion sleeve 25 makes disassembly and installation of the two more convenient.

[0080] When producing some workpieces C, some workpieces C need to be flipped so that they can be processed into the required shape. For some workpieces C, they may need to be stamped two or three times before they need to be flipped.

[0081] Furthermore, in one embodiment of the present invention, the flipping structure 20 further includes a pressure cover 26, and the flipping base 10 is provided with mounting screw holes. The pressure cover 26 is detachably fixed to the flipping base 10 by bolts.

[0082] Combination Figure 1 and Figure 2 When flipping is required, the pressure cap 26 is removed from the flipping base 10, allowing the mounting base 22 to rotate normally. When flipping is not required, first release the locking of the expansion sleeve 25 to the gear 24, allowing the gear 24 to rotate relative to the rotating shaft 21, and then install the pressure cap 26 as needed. Figure 1 When the flipping seat 10 is installed, it abuts against the rotating seat, preventing the rotating seat from rotating. Meanwhile, since the gear 24 and the rotating shaft 21 can rotate relative to each other, the flipping device is transformed into a regular clamping device, thus making the flipping device more widely applicable.

[0083] In one embodiment of the present invention, a second through hole 11 is formed through the upper and lower surfaces of the flip base 10, and the second through hole 11 is used to install the rotating shaft 21. The rotating shaft 21 is rotatably connected in the second through hole 11, and the rotating shaft 21 extends downward through the second through hole 11. By forming the second through hole 11 through the body of the flip base 10, the rotating shaft 21 can be rotated without the need for other connecting structures, so that the flip base 10 has a small volume.

[0084] Of course, bearings 14 are provided at both the upper and lower parts of the second through hole 11. The bearings 14 are installed on the wall of the second through hole 11, and the rotating shaft 21 and the inner wall of the bearing 14 are tightly fitted, so that the rotating shaft 21 can rotate lubricatingly relative to the second through hole 11.

[0085] Furthermore, in one embodiment of the invention, the flipping structure 20 further includes two nuts 27. The outer wall of the portion of the rotating shaft 21 extending out of the second through hole 11 and located above the flipping seat 10 is threaded, and the nuts 27 are threadedly connected to the outer wall of the rotating shaft at that location. Figure 3 and Figure 4After both nuts 27 are rotatably connected to the outer wall of the rotating shaft 21, the two nuts 27 with opposite threads fix the position of the rotating shaft 21 relative to the flipping seat 10. After the two nuts 27 limit the rotating shaft 21, the rotating shaft 21 will not move up and down along the axial direction of the rotating shaft 21 during rotation, making the rotating shaft 21 stable during rotation.

[0086] In one embodiment of the present invention, the flip seat 10 is further provided with a weight reduction part 12, as shown in the figure. Figure 1 and Figure 2 The weight-reducing section 12 is located in the middle of the flip base 10. That is, a portion of the middle of the flip base 10 is cut off, thereby reducing the overall weight of the flip base 10 and achieving a lightweight device.

[0087] Of course, it is recommended to set multiple weight reduction parts 12, such as hollowing out some non-load-bearing parts of the flip seat 10.

[0088] It is understood that those skilled in the art can make equivalent substitutions or changes to the technical solution and inventive concept of the present invention, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A material turning device for a cold heading machine, characterized in that, include: A flip-up mount for fixed connection to the frame; The flip structure includes: The rotating shaft is rotatably connected to the flipping seat; and A mounting base is provided below the flip base. The rotating shaft is fixedly connected to the top of the mounting base. A mounting cavity is provided on each side of the mounting base, and the tops of the two mounting cavities are horizontally connected to form a first through hole. The clamping structure includes: A spring is installed inside the first through hole; Two clips are respectively installed in two mounting cavities; and Two pressure plates are respectively installed in the two mounting cavities. The upper part of the pressure plate abuts against the spring and compresses the spring. The middle part of the pressure plate is rotatably connected to the mounting base. The lower part of the pressure plate is used to press the clamp. The friction between the clamp and the mounting base is greater than the weight of the clamp. The lower part of the pressure plate is provided with a protrusion, which is used to abut against the clamp. Since the middle part of the pressure block is rotatably connected to the mounting base, when the pressure block is provided with a protrusion, the upper part of the pressure block will apply a greater clamping force to the spring. At this time, the spring's reaction force on the pressure block is also greater, which in turn makes the clamp and the mounting base have greater friction, further preventing the clamp from slipping off the mounting base. The two clamps have a certain distance from the beginning. As long as the working parts used to clamp the workpiece are slightly separated, the workpiece can be clamped. The clamps will not rotate at a large angle relative to the mounting base, and the clamps can be well fixed on the mounting base without sliding relative to the mounting base. The clamping structure also includes a limiting block, which is installed in the mounting cavity and is used to limit the clamp to move only in the vertical direction. The clamps are provided with inclined surfaces to facilitate the entry of workpieces; each of the two clamps is provided with two semi-circular clamping holes, and the inclined surfaces are platform structures located at both ends of the clamping holes. The diameter of the platform structures on both sides of the clamps is larger than the diameter of the clamping hole located in the middle of the clamps.

2. The material turning device for a cold heading machine according to claim 1, characterized in that, The flipping device also includes a pad, which is installed between the flipping seat and the frame.

3. The material turning device for a cold heading machine according to claim 1, characterized in that, The flipping structure also includes a gear mounted on the rotating shaft, and the gear is an incomplete gear.

4. The material turning device for a cold heading machine according to claim 3, characterized in that, The flipping structure also includes an expansion sleeve, which is detachably mounted on the gear and is used to prevent slippage between the gear and the rotating shaft.

5. The material turning device for a cold heading machine according to claim 4, characterized in that, The flipping structure also includes a pressure cap, which is detachably mounted on the flipping base and is used to prevent the mounting base from rotating.

6. The material turning device for a cold heading machine according to claim 1, characterized in that, The upper and lower surfaces of the flipping seat form a second through hole, the rotating shaft is rotatably connected in the second through hole and extends downward through the second through hole, and a bearing is provided in the second through hole.

7. The material turning device for a cold heading machine according to claim 6, characterized in that, The flip base is also provided with a weight reduction part, which is located in the middle of the flip base.

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