Pipe end push forming mechanism

Abstract

The utility model relates to pipe end processing technical field, concretely is a kind of pipe end push forming mechanism, including base, and the coaxial setting clamping oil cylinder and push forming oil cylinder installed on it. Clamping oil cylinder is driven with the clamping plate of mould by movable rod to move to hold pipe material, and push forming oil cylinder is then driven piston head to carry out forming processing to pipe material end. Locking structure and automatic reset structure are further provided on base. Locking structure carries out mould clamping or stripping to upper die and lower die, simultaneously using pin rod to insert base, realize the rigid lock of mould, effectively prevent loosening and deviation in processing process. Automatic reset structure is then pushed clamping plate automatic return when clamping oil cylinder resets using spring. The mechanism solves the problem that the existing equipment is not held stably, and the forming quality is inconsistent, has the advantages of reliable clamping and reset accurate and fast.

Description

Technical Field

[0001] This utility model mainly relates to the field of pipe end processing technology, specifically a pipe end pressing and forming mechanism. Background Technology

[0002] After metal pipes are manufactured into various tubular parts, their ends often require processing such as flaring, necking, or upsetting. With technological advancements and intensified market competition, the requirements for pipe end processing quality and appearance are increasingly stringent. Existing pipe end forming machines have complex structures and are prone to clamping instability during processing, leading to inconsistent pipe end forming quality and affecting production efficiency and product qualification rate.

[0003] Therefore, a simple and reliable tube end forming mechanism is needed for tube end pressing and forming. Utility Model Content

[0004] The purpose of this invention is to provide a tube end pressing and forming mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pipe end pressing and forming mechanism, comprising a base, on which a clamping cylinder and a pressing and forming cylinder are mounted with telescopic ends arranged along the same axial direction. The telescopic end of the clamping cylinder is connected to a movable rod, and a clamping plate is connected to the movable rod. A mold for placing the pipe to be processed is arranged along the axial direction on the clamping plate. The telescopic end of the pressing and forming cylinder is connected by a piston head to a pressing head for pressing and forming the pipe end of the pipe to be processed. A locking structure and an automatic reset structure are mounted on the base. The locking structure is used to lock the mold during pressing and forming, and the automatic reset structure is used to push the clamping plate horizontally to the initial position when the clamping cylinder resets.

[0006] The mold includes an upper mold and a lower mold. The radial cross-section of the lower mold is semi-circular. Multiple connecting grooves are formed circumferentially on the outer wall of the lower mold. One end of the clamping plate forms a support strip that fits into the connecting groove. Both ends of the lower mold extend radially outward to form connecting parts. The difference between the upper mold and the lower mold is that the outer wall of the upper mold does not have connecting grooves. The upper mold and the lower mold are aligned and installed as a complete mold through their connecting parts. The mold opens towards the side of the pressing and forming cylinder to place the pipe to be processed.

[0007] Preferably, the locking structure includes a bracket, a locking cylinder, a movable plate, and multiple pins. The bracket has an inverted U-shaped structure, with both ends mounted on a base. The locking cylinder is mounted on the top of the bracket, and its telescopic end passes through the bracket and connects to the movable plate. Multiple pins are fixed to the bottom of the movable plate. Pin holes are opened on the connecting part, and sockets are installed on the base. The number of pin holes, sockets, and pins are the same and correspond one-to-one. Any pin passes through a pin hole and connects to the socket. A flange is welded to the outer wall of the pin, and the flange is threadedly connected to the upper mold for installation and fixation. The extension and retraction of the pins drive the upper and lower molds to lock together or unlock and demold.

[0008] Preferably, the base is provided with two limiting frames, which are L-shaped frames. The limiting frames are symmetrically arranged on both sides of the mold. When the clamping plate is pressed against one end of the mold, the other end of the mold is pressed against the L-shaped vertical arm of the limiting frame. The pushing head extends along the L-shaped horizontal arm of the limiting frame and passes over the L-shaped vertical arm to enter the mold, and pushes the pipe end of the pipe to be processed into shape.

[0009] Preferably, the automatic reset structure includes a fixed plate, a spring, a reset push plate, and a baffle. The fixed plate and the baffle are vertically mounted on the base. One end of the spring is connected to the fixed plate, and the other end of the spring passes through the baffle and is connected to the reset push plate. When the clamping plate contacts the reset push plate and compresses the spring until the reset push plate is tightly against the baffle, the clamping plate and the limiting frame simultaneously clamp the mold.

[0010] Preferably, the base has a sliding groove that matches the clamping plate. When the clamping plate moves to the end of the sliding groove, the clamping plate contacts the reset push plate and simultaneously compresses the spring until the reset push plate presses tightly against the baffle.

[0011] Preferably, a reinforcing rod is provided between the fixing plate and the baffle, and the reinforcing rod does not contact the spring.

[0012] Preferably, each end of the clamp is provided with a diagonal bar, and any one of the diagonal bars is connected to the movable rod, with the included angle between the diagonal bar and the movable rod being 45 degrees.

[0013] Compared with existing technologies, the advantages of this utility model are as follows: By integrating a locking structure and an automatic reset structure, the stability and efficiency of pipe end forming are improved. The locking structure uses an inverted U-shaped bracket to drive multiple pins and the upper mold to move synchronously for mold closing or demolding. The pins are inserted into sockets to form multi-point rigid locking, preventing mold displacement or loosening during the pressing process, ensuring the pipe clamping is secure, and maintaining consistent pipe end forming quality. The automatic reset structure uses a spring-driven reset push plate to automatically and quickly push the long-stroke clamping plate back to its initial position when the clamping cylinder resets. This, combined with the base slide groove, achieves precise guidance and improves equipment operating efficiency.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0015] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of the present invention and other related contents, and should not be considered as limitations on the present invention.

[0016] In the accompanying drawings of the instruction manual:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the locking structure of this utility model in the separated state from the base;

[0019] Figure 3 This is an exploded view of the structure surrounding the mold of this utility model;

[0020] Figure 4 This is a side sectional view of the automatic reset structure of this utility model;

[0021] Figure label:

[0022] 1. Base; 2. Clamping cylinder; 3. Press forming cylinder; 4. Movable rod; 5. Clamping plate; 6. Diagonal rod; 7. Socket; 8. Support bar; 9. Slide groove; 10. Push head; 11. Limiting frame; 12. Piston head; 100. Locking structure; 101. Bracket; 102. Locking cylinder; 103. Movable plate; 104. Pin rod; 105. Flange; 200. Automatic reset structure; 201. Fixing plate; 202. Spring; 203. Reset push plate; 204. Reinforcing rod; 205. Baffle; 300. Mold; 310. Upper mold; 311. Connecting groove; 312. Connecting part; 313. Pin hole; 320. Lower mold. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] like Figures 1 to 4As shown, this utility model provides a pipe end pressing and forming mechanism, including a base 1. A clamping cylinder 2 and a pressing and forming cylinder 3 are mounted on the base 1, with their telescopic ends arranged along the same axial direction. The telescopic end of the clamping cylinder 2 is connected to a movable rod 4, and a clamping plate 5 is connected to the movable rod 4. A mold 300 for placing the pipe to be processed is arranged axially on the clamping plate 5. The telescopic end of the pressing and forming cylinder 3 is connected by a piston head 12 to a pressing head 10 for pressing and forming the pipe end. A locking structure 100 and an automatic reset structure 200 are also mounted on the base 1, with the locking structure 100 located above the automatic reset structure 200.

[0026] like Figure 3 As shown, the mold 300 includes an upper mold 310 and a lower mold 320. The radial cross-section of the lower mold 310 is semi-circular, and three connecting grooves 311 are formed circumferentially on the outer wall of the lower mold 310. The two ends of the lower mold 310 extend radially outward to form connecting portions 312. The difference between the upper mold 310 and the lower mold 320 is that the outer wall of the upper mold 310 does not have connecting grooves 311. The upper mold 310 and the lower mold 320 are aligned and installed as a complete mold 300 through their connecting portions 312. The mold 300 has an opening on the side facing the pressing cylinder 3 to install the pipe to be processed and to accommodate the pressing head 10. One end of the clamping plate 5 forms a support bar 8 that fits into the connecting groove 311. There are also three support bars 8, which cooperate with the three connecting grooves 311 on the lower mold 310. The support bars 8 support the mold 300 in the vertical direction, so that the mold 300 and the pressing head 10 are aligned in the vertical direction.

[0027] like Figure 2As shown, the locking structure 100 includes a bracket 101, a locking cylinder 102, a movable plate 103, and multiple pins 104. The bracket 101 is inverted U-shaped, with both ends of the U-shape mounted on the base 1. The locking cylinder 102 is mounted on the top of the bracket 101, and its telescopic end passes through the bracket 101 and connects to the movable plate 103. The pins 104 are fixed to the bottom of the movable plate 103, with pin holes 313 on the connecting part 312, and sockets 7 mounted on the base 1. The number of pin holes 313, sockets 7, and pins 104 are the same and correspond one-to-one. A flange 105 is welded to the outer wall of the pin 104, and the flange 105 is threadedly connected to the upper mold 310 for installation and fixation. The telescopic movement of the pins 104 drives the upper mold 310 and the lower mold 320 to lock together or unlock and demold. Specifically, during locking, the locking cylinder 102 drives the movable plate 103 to move downward, causing the pin 104 and the upper mold 310 to move downward synchronously until the bottom of the upper mold 310 tightly abuts against the lower mold 320. At the same time, the pin 104 passes through the pin hole 313 and inserts into the socket 7, thereby achieving overall locking and mold closing of the mold 300, which facilitates workpiece forming. During unlocking, the locking cylinder 102 drives the movable plate 103 to move upward, causing the pin 104 and the upper mold 310 to move upward synchronously. The upper mold 310 separates from the lower mold 320, and the pin 104 is pulled out of the socket 7 and the pin hole 313 in sequence, thereby achieving unlocking and demolding of the mold 300, which facilitates the removal of the workpiece.

[0028] like Figures 2 to 3 As shown, two limiting frames 11 are provided on the base 1. The limiting frames 11 are L-shaped and are symmetrically placed on both sides of the mold 300. When the clamping plate 5 is pressed against one end of the mold 300, the other end of the mold 300 is pressed against the L-shaped vertical arm of the limiting frame 11. The pressing head 10 extends along the L-shaped horizontal arm of the limiting frame 11 and passes through the space between the two L-shaped vertical arms to enter the mold 300, pressing and forming the tube.

[0029] like Figure 4As shown, there are two automatic reset structures 200, symmetrically arranged on both sides of the mold 300. Each automatic reset structure 200 includes a fixing plate 201, a spring 202, a reset push plate 203, and a baffle 205. The fixing plate 201 and the baffle 205 are vertically mounted on the base 1. One end of the spring 202 is connected to the fixing plate 201, and the other end passes through the baffle 205 and connects to the reset push plate 203. The base 1 has a groove 9 that fits with the clamping plate 5. When the clamping plate 5 moves horizontally to the end of the groove 9 under the drive of the clamping cylinder 2, the clamping plate 5 contacts the reset push plate 203 and just compresses the spring 202 until the reset push plate 203 is tightly against the baffle 205. At this time, the clamping plate 5 and the limiting frame 11 also clamp the mold 300 simultaneously. The sliding groove 9, baffle 205, and limiting bracket 11 work together to limit the movement of clamp 5, ensuring that pin hole 313, socket 7, and pin 104 can be aligned and locked together. A reinforcing rod 204 is provided between the fixing plate 201 and the baffle 205. The reinforcing rod 204 is located on the outer or inner periphery of the spring 202, enhancing structural stability without interfering with the extension and contraction of the spring 202.

[0030] like Figure 2 As shown, a diagonal rod 6 is provided at each end of the clamping plate 5. Any diagonal rod 6 is connected to the movable rod 4. The angle between the diagonal rod 6 and the movable rod 4 is 45 degrees, forming a triangular support to improve the connection stability between the movable rod 4 and the clamping plate 5.

[0031] The working principle of this product is as follows: First, the pipe to be processed is placed into the lower mold 320, which is installed on the clamping plate 5 through the connection groove 311 and the support bar 8; then, the clamping cylinder 2 is activated, driving the movable rod 4 and the clamping plate 5 to push the lower mold 320 against the limit frame 11, while the spring 202 of the automatic reset structure 200 is compressed; then the locking structure 100 is activated, and the locking cylinder 102 drives the upper mold 310 and the pin 104, which are fixed by the flange 105, to move downwards synchronously until the upper mold 310 presses against the lower mold 320 to close the mold into a complete mold 300, while the pin 104 moves downwards through the pin hole 313. The socket 7 position locks the mold 300; then the pressing forming cylinder 3 is activated, the piston head 12 extends and retracts to drive the pressing head 10 to press and form the tube end in the mold 300; after processing, the piston head 12 and the pressing head 10 are reset, the locking structure 100 is released to separate the upper mold 310 and the lower mold 320, the clamping cylinder 2 releases the clamping force, and the spring 202 of the automatic reset structure 200 pushes the reset push plate 203, which in turn drives the clamping plate 5 to return to the initial position along the slide 9, so that the clamping plate 5 with a long stroke can be quickly reset; finally, after manual self-reset, the formed tube is taken out of the lower mold 320 and a new round of processing operations are performed.

[0032] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from its essential characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pipe end pressing and forming mechanism, comprising a base (1), wherein a clamping cylinder (2) and a pressing and forming cylinder (3) with telescopic ends arranged along the same axial direction are mounted on the base (1), characterized in that: The telescopic end of the clamping cylinder (2) is connected to a movable rod (4), and a clamping plate (5) is connected to the movable rod (4). A mold (300) for placing the pipe to be processed is provided on the clamping plate (5) along the axial direction. The telescopic end of the push forming cylinder (3) is connected to a push head (10) for pushing and forming the pipe end of the pipe to be processed by a piston head (12). A locking structure (100) and an automatic reset structure (200) are installed on the base (1). The locking structure (100) is used to lock the mold (300) during push forming. The automatic reset structure (200) is used to push the clamping plate (5) to move horizontally to the initial position when the clamping cylinder (2) is reset.

2. The tube end pressing and forming mechanism according to claim 1, characterized in that: The mold (300) includes an upper mold (310) and a lower mold (320). The radial cross section of the lower mold (320) is semi-circular. Multiple connecting grooves (311) are formed on the outer wall of the lower mold (320) along the circumferential direction. One end of the clamping plate (5) forms a support strip (8) that fits into the connecting groove (311). Both ends of the lower mold (320) extend radially outward to form connecting parts (312). The difference between the upper mold (310) and the lower mold (320) is that the upper mold (310) does not have a connecting groove (311) on its outer wall. The upper mold (310) and the lower mold (320) are aligned and installed as a complete mold (300) through their connecting part (312). The mold (300) opens towards the side of the pressing and forming cylinder (3) to place the pipe to be processed.

3. The tube end pressing and forming mechanism according to claim 2, characterized in that: The locking structure (100) includes a bracket (101), a locking cylinder (102), a movable plate (103), and multiple pins (104). The bracket (101) has an inverted U-shaped structure, with both ends of the bracket (101) mounted on the base (1). The locking cylinder (102) is mounted on the top of the bracket (101), and the telescopic end of the locking cylinder (102) passes through the bracket (101) and is connected to the movable plate (103). The multiple pins (104) are fixed to the bottom of the movable plate (103). The connecting part... (312) has a pin hole (313), and a socket (7) is installed on the base. The number of pin holes (313), sockets (7) and pins (104) are the same and correspond one-to-one. Any pin (104) passes through the pin hole (313) and connects to the socket (7). A flange (105) is welded on the outer wall of the pin (104). The flange (105) is threadedly connected to the upper mold (310) and fixed. The extension and retraction of the pin (104) drives the upper mold (310) and the lower mold (320) to lock and close the mold or unlock and release the mold.

4. The tube end pressing and forming mechanism according to claim 1, characterized in that: Two limiting frames (11) are provided on the base (1). The limiting frames (11) are L-shaped frames. The limiting frames (11) are symmetrically arranged on both sides of the mold (300). When the clamping plate (5) is pressed against one end of the mold (300), the other end of the mold (300) is pressed against the L-shaped vertical arm of the limiting frame (11). The pressing head (10) extends along the L-shaped horizontal arm of the limiting frame (11) and passes over the L-shaped vertical arm to enter the mold (300) to push and form the pipe end of the pipe to be processed.

5. The tube end pressing and forming mechanism according to claim 4, characterized in that: The automatic reset structure (200) includes a fixed plate (201), a spring (202), a reset push plate (203), and a baffle (205). The fixed plate (201) and the baffle (205) are vertically mounted on the base (1). One end of the spring (202) is connected to the fixed plate (201), and the other end of the spring (202) passes through the baffle (205) and is connected to the reset push plate (203). When the clamping plate (5) contacts the reset push plate (203) and compresses the spring (202) until the reset push plate (203) presses against the baffle (205), the clamping plate (5) and the limiting frame (11) simultaneously clamp the mold (300).

6. The tube end pressing and forming mechanism according to claim 5, characterized in that: The base (1) has a groove (9) that fits the clamping plate (5). When the clamping plate (5) moves to the end of the groove (9), the clamping plate (5) contacts the reset push plate (203) and synchronously compresses the spring (202) until the reset push plate (203) presses against the baffle (205).

7. The tube end pressing and forming mechanism according to claim 5, characterized in that: A reinforcing rod (204) is provided between the fixing plate (201) and the baffle (205), and the reinforcing rod (204) does not contact the spring (202).

8. The tube end pressing and forming mechanism according to claim 1, characterized in that: The clamp (5) has a diagonal rod (6) at each end. Any one of the diagonal rods (6) is connected to the movable rod (4), and the angle between the diagonal rod (6) and the movable rod (4) is 45 degrees.

Images