Self-retracting jaw device

Abstract

The utility model relates to stainless steel pipe stretching equipment technical field, and disclose automatic contraction jaw device, including disc drawbench frame, drive unit and disc cylinder, the inside of disc drawbench frame is located disc cylinder outside and is provided with protection subassembly, the inside of disc cylinder is provided with cutting subassembly, recessed place of disc cylinder outer edge is provided with jaw subassembly and arc limit plate, the outside of disc drawbench frame is provided with drawbench unit. This automatic contraction jaw device, through the design of arc limit plate, arc limit plate can adapt disc cylinder internal space, and with chain abutment connection can effectively limit and guide chain, avoid the deviation when chain movement, guarantee stainless steel pipe automatic stretching process smooth and stable, through the design of jaw subassembly, jaw subassembly opens and shuts through the cylinder drive forceps, can steady clamping stainless steel pipe material head, cooperate with the locking pin and locking hole of jaw locking subassembly adaptation, can accurate locking jaw subassembly, prevent its stainless steel pipe displacement when stretching, and the practicality is higher.

Description

Technical Field

[0001] This utility model relates to the technical field of stainless steel pipe stretching equipment, specifically to an automatic shrinking jaw device. Background Technology

[0002] The drawing machine is a key piece of equipment for the precision processing of metal tubes and wires. It mainly achieves material diameter reduction, wall thickness control, and performance optimization through continuous drawing process. Its working principle is that metal billets (such as copper tubes, aluminum tubes, steel tubes, etc.) are fed in by a wire feeding device and pass through multiple sets of drawing dies of different specifications in sequence. Under the action of traction force, they undergo plastic deformation and gradually reach the target size. At the same time, the drawn material is continuously wound up by a take-up reel, forming a closed-loop production process. The drawing machine has the characteristics of continuous production, high efficiency, and high material utilization rate. It is widely used in air conditioning and refrigeration, automotive piping, electronic communications and other fields, and is the core equipment for manufacturing precision metal tubes.

[0003] Traditional pipe drawing machines use clamping cylinders to directly clamp the pipe ends and rely on telescopic cylinders to drive the swing arm to make the pipe fit against the cylinder. This cannot guarantee that the jaw assembly can fit against the inside of the cylinder. In actual use, the jaw assembly is prone to displacement. In severe cases, the relative position of the pipe end and the cylinder will shift, affecting the normal stretching of the stainless steel pipe. Summary of the Invention

[0004] In view of the shortcomings of the prior art, this utility model provides an automatic retractable jaw device to solve the problems mentioned in the background.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic retractable jaw device, comprising a coil pulling machine frame, a drive unit, and a coil cylinder. A protective component is provided on the inner side of the coil pulling machine frame located outside the coil cylinder. A cutting component is provided inside the coil cylinder. A jaw assembly and an arc-shaped limiting plate are provided in the recessed area of ​​the outer edge of the coil cylinder. A pulling mold unit is provided on the outer side of the coil pulling machine frame. A jaw locking component is provided on the inner diameter surface of the arc-shaped limiting plate. The jaw assembly includes an ear seat, a chain, and a jaw seat. The connection between the chain and the ear seat and the jaw seat is provided with a rotating shaft one and a rotating shaft two, respectively. The jaw seat has a locking hole on the side facing the jaw locking assembly. The jaw locking assembly includes a second vertical mounting plate, a second horizontal mounting plate is fixedly mounted on the lower part of the second vertical mounting plate, a second cylinder is fixedly mounted on the side of the second horizontal mounting plate away from the second vertical mounting plate, and a locking pin is fixedly mounted on the movable end of the second cylinder.

[0006] Preferably, the jaw assembly further includes a vertical mounting plate, on the side of the vertical mounting plate away from the disc cylinder, an ear seat is provided, the chain is located between the ear seat and the jaw seat, a cylinder is provided inside the jaw seat, a clamping groove is provided inside the jaw seat, a pull rod, a pull plate and pliers are provided inside the clamping groove, and the cross-section of the clamping groove is a "V" shaped structure.

[0007] Through the above technical solution, the design of the jaw assembly enables the clamping of stainless steel pipes, facilitating the winding of the stainless steel pipes to the outside of the drum. The cylinder can drive the pull plate through the pull rod, thereby driving the clamps in the clamping slot to complete the opening and closing action.

[0008] Preferably, the pull rod is fixedly connected to the movable end of the cylinder, the pliers are slidably connected to the pull plate, and two identical pliers are provided, which are symmetrically distributed on the outside of the pull plate.

[0009] With the above technical solution, when in use, the movable end of cylinder one pushes the pull rod to move outward. At this time, the pull rod pushes the pull plate to move outward, and the pull plate pushes the gap between the two clamps to become smaller, so that the stainless steel pipe can be clamped.

[0010] Preferably, the chain is rotatably connected to the ear seat via a first rotating shaft, and the chain is rotatably connected to the jaw seat via a second rotating shaft.

[0011] The above technical solution enables a flexible rotating connection structure between the chain, lug seat, and jaw seat, ensuring that the jaw seat can flexibly adjust its angle and position with the movement of the chain. At the same time, the chain and jaw seat can be inserted into the interior of the arc-shaped limiting plate, thereby realizing the automatic retraction of the jaw assembly without affecting the normal stretching of the stainless steel ring.

[0012] Preferably, the arc-shaped limiting plate has an "L"-shaped structure, the outer diameter of the arc-shaped limiting plate is smaller than the inner diameter of the disc, and the chain is in contact with the arc-shaped limiting plate.

[0013] Through the above technical solution, the arc-shaped limiting plate can adapt to the internal space of the disc, and the contact connection between the arc-shaped limiting plate and the chain can effectively limit and guide the chain, prevent the chain from deviating during movement, and ensure that the automatic stretching of the stainless steel tube is not affected.

[0014] Preferably, the locking pin is adapted to the locking hole, and the locking pin passes through the transverse mounting plate and the arc-shaped limiting plate and extends into the interior of the locking hole.

[0015] With the above technical solution, when the cylinder pushes the locking pin out, the locking pin can be accurately inserted into the locking hole, realizing the stable locking of the jaw assembly and the arc-shaped limiting plate, preventing the jaw assembly from shifting during operation, and ensuring the reliability of operation.

[0016] Compared with the prior art, the present invention provides an automatic retractable jaw device, which has the following beneficial effects: 1. This automatic retractable jaw device, through the design of the arc-shaped limiting plate, can adapt to the internal space of the disc and connect with the chain to effectively limit and guide the chain, prevent the chain from deviating during movement, and ensure the smooth and stable automatic stretching process of the stainless steel tube. 2. This automatic retractable jaw device, through the design of the jaw assembly, uses a cylinder to drive the jaws to open and close, which can firmly clamp the stainless steel tube head. With the matching locking pin and locking hole of the jaw locking assembly, the jaw assembly can be precisely locked to prevent displacement when the stainless steel tube is stretched, making it highly practical. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 Schematic diagram of the jaw assembly mounting structure of this utility model Figure 1 ; Figure 4 Schematic diagram of the jaw assembly mounting structure of this utility model Figure 2 ; Figure 5 This is a schematic diagram of the installation structure of the jaw locking assembly of this utility model; Figure 6 This is a schematic diagram of the three-dimensional structure of the jaw assembly of this utility model. Figure 1 ; Figure 7 This is a schematic diagram of the three-dimensional structure of the jaw assembly of this utility model. Figure 2 ; Figure 8 This is a three-dimensional structural diagram of the jaw holder of this utility model; Figure 9 This is a schematic diagram of the pliers mounting structure of this utility model.

[0018] The components include: 1. Pan drawing machine frame; 2. Drive unit; 3. Pulling mold unit; 4. Pan cylinder; 5. Protection components; 6. Jaw assembly; 601. Vertical mounting plate one; 602. Ear seat; 603. Rotating shaft one; 604. Chain; 605. Jaw seat; 606. Rotating shaft two; 607. Cylinder one; 608. Clamping groove; 609. Pull rod; 610. Pull plate; 611. Pliers; 612. Locking hole; 7. Jaw locking assembly; 701. Vertical mounting plate two; 702. Horizontal mounting plate; 703. Cylinder two; 704. Locking pin; 8. Cutting assembly; 9. Arc-shaped limit plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1: like Figure 1-9 As shown, the automatic retractable jaw device provided by this utility model includes a coiling machine frame 1, a drive unit 2, and a coil 4. A protective component 5 is provided on the inner side of the coiling machine frame 1, located on the outer side of the coil 4. A cutting component 8 is provided inside the coil 4. A jaw component 6 and an arc-shaped limiting plate 9 are provided in the recessed area on the outer edge of the coil 4. A pulling mold unit 3 is provided on the outer side of the coiling machine frame 1. A jaw locking component 7 is provided on the inner diameter surface of the arc-shaped limiting plate 9. The jaw assembly 6 includes an ear seat 602, a chain 604, and a jaw seat 605. The connection between the chain 604 and the ear seat 602 and the jaw seat 605 is provided with a first rotating shaft 603 and a second rotating shaft 606, respectively. The jaw seat 605 has a locking hole 612 on the side facing the jaw locking assembly 7.

[0021] Example 2: like Figure 2-9 As shown, as an improvement to the previous embodiment, in order to limit and guide the chain 604... Specifically, the arc-shaped limiting plate 9 has an "L"-shaped structure, and its outer diameter is smaller than the inner diameter of the disc 4. The chain 604 is in contact with the arc-shaped limiting plate 9. The advantage is that the arc-shaped limiting plate 9 can fit the internal space of the disc 4, and the contact connection between the arc-shaped limiting plate 9 and the chain 604 effectively limits and guides the chain 604, preventing it from shifting during movement and ensuring that the automatic stretching of the stainless steel tube is not affected.

[0022] Example 3: like Figure 2-9 As shown, as an improvement to the previous embodiment, a method is used to clamp the stainless steel tube.

[0023] Specifically, the jaw assembly 6 also includes a vertical mounting plate 601. An ear seat 602 is provided on the side of the vertical mounting plate 601 away from the drum 4. A chain 604 is located between the ear seat 602 and the jaw seat 605. A cylinder 607 is installed inside the jaw seat 605. A clamping groove 608 is formed inside the jaw seat 605. A pull rod 609, a pull plate 610, and pliers 611 are installed inside the clamping groove 608. The cross-section of the clamping groove 608 has a "V" shape. The advantage is that the design of the jaw assembly 6 allows for the clamping of stainless steel pipes, facilitating the winding of the stainless steel pipes to the outside of the drum 4. The cylinder 607 can drive the pull plate 610 via the pull rod 609, thereby driving the pliers 611 inside the clamping groove 608 to complete the opening and closing action.

[0024] Specifically, the pull rod 609 is fixedly connected to the movable end of the cylinder 607, while the clamps 611 are slidably connected to the pull plate 610. Two identical clamps 611 are provided, symmetrically distributed on the outer side of the pull plate 610. The advantage is that during use, the movable end of the cylinder 607 pushes the pull rod 609 outward, which in turn pushes the pull plate 610 outward. The pull plate 610 then reduces the distance between the two clamps 611, allowing for the clamping of the stainless steel pipe.

[0025] Specifically, chain 604 is rotatably connected to lug 602 via pivot 603, and chain 604 is rotatably connected to jaw seat 605 via pivot 606. The advantage is that this creates a flexible rotatable connection structure between chain 604, lug 602, and jaw seat 605, ensuring that jaw seat 605 can flexibly adjust its angle and position as chain 604 moves. Simultaneously, chain 604 and jaw seat 605 can be engaged inside the arc-shaped limiting plate 9, thereby achieving automatic retraction of the jaw assembly 6 without affecting the normal stretching of the stainless steel ring.

[0026] Example 4: like Figure 2-9 As shown, as an improvement to the previous embodiment, in order to clamp the stainless steel tube, the jaw assembly 6 is locked.

[0027] Specifically, the jaw locking assembly 7 includes a second vertical mounting plate 701, a second horizontal mounting plate 702 fixedly mounted on the lower part of the second vertical mounting plate 701, a second cylinder 703 fixedly mounted on the side of the second horizontal mounting plate 702 away from the second vertical mounting plate 701, and a locking pin 704 fixedly mounted on the movable end of the second cylinder 703. The locking pin 704 is adapted to the locking hole 612, and the locking pin 704 passes through the second horizontal mounting plate 702 and the arc-shaped limiting plate 9 and extends into the locking hole 612. The advantage is that when the second cylinder 703 pushes the locking pin 704 out, the locking pin 704 can be accurately inserted into the locking hole 612, realizing the stable locking of the jaw assembly 6 and the arc-shaped limiting plate 9, preventing the jaw assembly 6 from shifting during operation, and ensuring the reliability of operation.

[0028] Working principle: In use, the operator first passes the stainless steel pipe through the drawing unit 3 and uses the jaw assembly 6 to bite the end of the stainless steel pipe. The cylinder 607 inside the jaw seat 605 is activated, and its movable end pushes the pull rod 609 outward. The pull rod 609 then pushes the pull plate 610 outward in the clamping groove 608. Since the two clamps 611 are symmetrically distributed on the outside of the pull plate 610 and are slidably connected to the pull plate 610, the movement of the pull plate 610 reduces the distance between the two clamps 611, thereby achieving a stable clamping of the stainless steel pipe. After clamping is completed, the drive unit 2 is activated, and the drive unit 2 drives the disc 4 to rotate. The disc 4 coils and stretches the stainless steel pipe. During the coiling and stretching process, the arc-shaped "L"-shaped limiting plate 9 effectively limits and guides the chain 604, preventing the chain 604 from deviating during movement. After the jaw assembly 605 and jaw seat 605 are fully engaged inside the arc-shaped limiting plate 9, cylinder 703 is activated, pushing the locking pin 704 out. The locking pin 704 passes through the transverse mounting plate 702 and the arc-shaped limiting plate 9 and is precisely inserted into the locking hole 612 on the jaw seat 605, which can lock the jaw assembly 6 and prevent the jaw assembly 6 from shifting during operation. The protective component 5 located on the inner side of the frame 1 of the panning machine outside the pan 4 can protect the device. The cutting component 8 inside the pan 4 can cut the stainless steel tube head that is engaged by the jaw assembly 6.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic retraction jaw device, comprising a coiling machine frame (1), a drive unit (2), and a coil (4), characterized in that: The inner side of the slitting machine frame (1) is provided with a protective component (5) located outside the slitting cylinder (4). The inside of the slitting cylinder (4) is provided with a cutting component (8). The recessed part of the outer edge of the slitting cylinder (4) is provided with a jaw assembly (6) and an arc-shaped limiting plate (9). The outer side of the slitting machine frame (1) is provided with a pulling mold unit (3). The inner diameter surface of the arc-shaped limiting plate (9) is provided with a jaw locking component (7). The jaw assembly (6) includes an ear seat (602), a chain (604) and a jaw seat (605). The chain (604) is connected to the ear seat (602) and the jaw seat (605) with a rotating shaft one (603) and a rotating shaft two (606) respectively. The jaw seat (605) has a locking hole (612) on the side facing the jaw locking assembly (7). The jaw locking assembly (7) includes a vertical mounting plate two (701), a horizontal mounting plate (702) is fixedly mounted on the lower part of the vertical mounting plate two (701), a cylinder two (703) is fixedly mounted on the side of the horizontal mounting plate (702) away from the vertical mounting plate two (701), and a locking pin (704) is fixedly mounted on the movable end of the cylinder two (703).

2. The self-contracting jaw device of claim 1, wherein: The jaw assembly (6) further includes a vertical mounting plate (601), on the side of the vertical mounting plate (601) away from the disc (4) is provided with an ear seat (602), the chain (604) is located between the ear seat (602) and the jaw seat (605), the jaw seat (605) is provided with a cylinder (607) inside, the jaw seat (605) is provided with a clamping groove (608) inside, the clamping groove (608) is provided with a pull rod (609), a pull plate (610) and a pair of pliers (611) inside, and the cross section of the clamping groove (608) is V-shaped.

3. The self-contracting jaw device of claim 2, wherein: The pull rod (609) is fixedly connected to the movable end of the cylinder (607), and the pliers (611) is slidably connected to the pull plate (610). There are two identical pliers (611), and the two pliers (611) are symmetrically distributed on the outside of the pull plate (610).

4. The automatic retractable jaw device according to claim 1, characterized in that: The chain (604) is rotatably connected to the ear seat (602) via a first rotating shaft (603), and the chain (604) is rotatably connected to the jaw seat (605) via a second rotating shaft (606).

5. The self-shrinking jaw apparatus of claim 1, wherein: The arc-shaped limiting plate (9) has an "L"-shaped structure. The outer diameter of the arc-shaped limiting plate (9) is smaller than the inner diameter of the disc (4). The chain (604) and the arc-shaped limiting plate (9) are in contact connection.

6. The self-shrinking jaw device of claim 1, wherein: The locking pin (704) is adapted to the locking hole (612), and the locking pin (704) passes through the transverse mounting plate (702) and the arc-shaped limiting plate (9) and extends into the locking hole (612).

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