Pipe fitting foot beveling stamping die for furniture production

Abstract

The invention relates to the technical field of furniture hardware part production, in particular to a pipe fitting foot beveling stamping die for furniture production, which comprises a female die seat, a first stamping cutter, a second stamping cutter and an inner wall supporting assembly. During die assembly, a cavity matched with the shape of the foot of the pipe fitting is formed, meanwhile, the inner wall supporting assembly extends into the foot of the pipe fitting, and the inner walls, on the two sides of a cutting line, of the pipe fitting are effectively supported through the first inner supporting piece and the second inner supporting piece correspondingly. And the inner wall of the foot part of the pipe fitting is always stably supported, so that the problem that the existing beveling stamping die easily causes deformation of the pipe fitting is obviously improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of furniture hardware production, in particular to a pipe foot beveling and stamping die for furniture production. BACKGROUND

[0002] In the field of furniture production and manufacturing, in order to meet specific structural or aesthetic needs, a long pipe with a small head and a large foot, slightly tapered, is often used as a component element of table / support, handrail, etc. The manufacturing difficulty of such pipe is usually not in the forming of its tapered pipe body, but in the processing of its "foot" (i.e. the large end of the pipe). In order to enable it to be stably and flatly installed on an arc-shaped mounting base, it is necessary to cut a precise bevel on the pipe foot.

[0003] The beveling of the pipe foot in the industry mainly relies on the following methods: manual cutting: the operator uses a grinder, a gas cutting gun or a hacksaw to cut by hand. This method is highly flexible, but it is heavily dependent on the skill level of the operator, resulting in poor processing accuracy, low consistency, poor cutting surface quality and low production efficiency. Semi-mechanical guide rail cutting: some production enterprises use a method of fixing the long pipe and installing the cutting tool (such as a grinding wheel) on an angle-adjustable guide rail. By adjusting the relative angle of the guide rail and the pipe, and then pushing the guide rail to complete the cutting. Compared with manual cutting, this method has improved quality consistency.

[0004] However, the above-mentioned existing technologies all have significant inherent defects: First of all, whether it is manual cutting or guide rail cutting, the cutting methods such as grinding, gas cutting and hacksawing used by them all belong to "grinding" or "fusing" process, which takes too long to process at a time and cannot meet the rhythm requirements of mass production. Secondly, these processing methods consume a lot of tools, which is a high production cost in the long run. In addition, even if the guide rail is used, the positioning and operation still contain many human factors, and the efficiency and accuracy are limited.

[0005] More importantly, when trying to use a stamping die with higher efficiency for beveling, a new technical bottleneck is encountered: because the pipe is a hollow structure, during the shearing process of the punch, the pipe wall in the beveling area is prone to plastic deformation such as crushing and indentation due to the lack of internal support, resulting in unqualified cutting surface and high product rejection rate. Therefore, it has become a technical problem to be solved in the field to develop a special stamping die that can efficiently and effectively complete the beveling of the tapered long pipe foot for furniture production and prevent deformation of the pipe cutting surface. SUMMARY

[0006] To address the problems existing in the prior art, a beveling stamping die for the foot of a furniture manufacturing tube is provided. By employing a first and a second die body that can move in opposite directions, a cavity matching the shape of the tube foot is formed when the die is closed. At the same time, an inner wall support assembly extends into the tube foot, and the first and second inner supports effectively support the inner walls of the tube on both sides of the cutting line. This structure ensures that the inner wall of the tube foot remains stably supported during the beveling stamping process performed by the first and second stamping cutters, thereby significantly improving the problem of tube deformation easily caused by existing beveling stamping dies.

[0007] To address the problems of existing technologies, this invention provides a beveling stamping die for the foot of a pipe fitting used in furniture manufacturing, comprising: a die base having a first die body and a second die body capable of moving towards each other, wherein inclined grooves are respectively formed on opposite sides of the first die body and the second die body, and when the first die body and the second die body are closed, the two grooves together form a cavity adapted to the shape of the pipe fitting foot; a first stamping cutter and a second stamping cutter, respectively disposed through the top and bottom of the die base, wherein the first stamping cutter and the second stamping cutter are respectively provided with cutting edges at opposite ends and extend into the cavity; and an inner wall support assembly disposed between the first die body and the second die body, including a first inner support member and a second inner support member capable of extending into the interior of the pipe fitting foot and located on both sides of its pre-cut line, wherein when the first stamping cutter and the second stamping cutter... When the foot of the pipe fitting is beveled and stamped, the second inner support can move away from the first inner support along the axial direction of the support column; the inner wall support assembly also includes a support column that can extend coaxially into the foot of the pipe fitting; the first and second inner supports are annular structures and are sleeved on the support column; the center of the opposite end of the first and second stamping cutters is provided with a semi-circular cutting edge to avoid the support column; a connecting seat is provided at the end of the support column away from the foot of the pipe fitting; parallelogram linkage assemblies are connected between the connecting seat and the first die body, and between the connecting seat and the second die body; when the first die body and the second die body move towards each other to close the mold, the two sets of parallelogram linkage assemblies move accordingly and drive the connecting seat and the support column to move in a straight line, so that the support column is inserted into the foot of the pipe fitting.

[0008] Preferably, the support column is provided with a first limiting ring and a second limiting ring coaxial with it, and the first inner support member and the second inner support member are disposed between the first limiting ring and the second limiting ring.

[0009] Preferably, an elastic element is provided between the second inner support member and the second limiting ring.

[0010] Preferably, both the first inner support member and the second inner support member are coaxially connected to the support column via a spline structure.

[0011] Preferably, the edge of the second inner support member facing the first inner support member is chamfered.

[0012] Preferably, a demolding ring is provided at the end of the second inner support member away from the first inner support member; an elastic connecting component is provided between the demolding ring and the first inner support member; abutting surfaces for abutting against the demolding ring are formed in the first and second mold bodies; the distance between the second inner support member and the demolding ring is greater than the distance between the pipe foot waste and the demolding ring; when the demolding ring abuts against the abutting surface and the second inner support member continues to move toward the demolding ring, the pipe foot waste is pushed away from the second inner support member by the demolding ring.

[0013] Preferably, a waste groove is also provided on the opposite side of the first die body and the second die body.

[0014] Preferably, the second inner support member has an axially extending mounting blind hole at one end facing the demolding ring; the elastic connection assembly includes: a connecting pin, one end of which has a pin cap, the pin cap being accommodated in the mounting blind hole and capable of sliding along its axial direction, and the other end of the connecting pin being fixedly connected to the demolding ring; a positioning sleeve, which is coaxially fixed at the opening of the mounting blind hole and slides in cooperation with the rod of the connecting pin; and a spring, which is disposed in the mounting blind hole and elastically abuts against the pin cap of the connecting pin and the bottom of the groove of the mounting blind hole.

[0015] The advantages of this application compared to the prior art are: This application employs a first and a second mold body that can move in opposite directions to form a cavity that matches the shape of the pipe fitting foot during mold closing. At the same time, an inner wall support assembly extends into the pipe fitting foot, and the first and second inner supports effectively support the inner walls of the pipe fitting on both sides of the cutting line. This structure ensures that the inner wall of the pipe fitting foot remains stably supported during the oblique cutting stamping process performed by the first and second stamping cutters, thereby significantly improving the problem that existing oblique cutting stamping dies are prone to causing pipe fitting deformation.

[0016] After the oblique cutting is completed, the first and second die bodies separate, the inner wall support components are reset, and the demolding ring installed on the second inner support component demolds the pipe waste material, which is discharged outward through the waste material groove between the first and second die bodies, thereby facilitating continuous oblique cutting. Attached Figure Description

[0017] Figure 1 This is a perspective view of a beveled stamping die for the foot of a furniture manufacturing pipe, according to the present invention.

[0018] Figure 2 This is a three-dimensional sectional view of a beveled stamping die for the foot of a furniture manufacturing pipe, according to the present invention.

[0019] Figure 3 This is a cross-sectional view of a beveled stamping die for the foot of a furniture manufacturing pipe, according to the present invention.

[0020] Figure 4 yes Figure 3 A magnified view of part A.

[0021] Figure 5 This is an exploded perspective view of a furniture manufacturing pipe fitting foot beveling stamping die of the present invention, viewed from a first perspective.

[0022] Figure 6 This is an exploded perspective view of a furniture manufacturing pipe fitting foot beveling stamping die from a second viewpoint, according to the present invention.

[0023] Figure 7 This is a perspective view of the inner wall support component in a beveled stamping die for the foot of a furniture manufacturing pipe according to the present invention.

[0024] Figure 8 This is an exploded perspective view of the inner wall support component in the oblique cutting stamping die for the foot of a furniture manufacturing pipe of the present invention, from a first perspective.

[0025] Figure 9 This is an exploded perspective view of the inner wall support component in the oblique cutting stamping die for the foot of a furniture manufacturing pipe of the present invention, viewed from a second perspective.

[0026] Figure 10 This is an exploded perspective view of the elastic connecting component in the beveled stamping die for the foot of a furniture manufacturing pipe according to the present invention.

[0027] The following are the labels in the diagram: 11. First die body; 12. Second die body; 13. Groove; 14. Abutment surface; 15. Scrap channel; 2. First stamping cutter; 21. Semi-circular cutting edge; 3. Second stamping cutter; 41. First inner support; 42. Second inner support; 421. Mounting blind hole; 43. Support column; 431. Connecting seat; 44. First limiting ring; 45. Second limiting ring; 46. Elastic element; 47. Parallelogram connecting rod assembly; 48. Demolding ring; 491. Connecting pin; 4911. Pin cap; 492. Positioning sleeve; 493. Spring; 5. Connecting frame. Detailed Implementation

[0028] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figures 1-5As shown, a beveling stamping die for the foot of a furniture manufacturing tube includes: a die base having a first die body 11 and a second die body 12 that can move towards each other; inclined grooves 13 are respectively opened on opposite sides of the first die body 11 and the second die body 12; when the first die body 11 and the second die body 12 are closed, the two grooves 13 together form a cavity that matches the shape of the foot of the tube; a first stamping cutter 2 and a second stamping cutter 3 are respectively disposed through the top and bottom of the die base. The first stamping cutter 2 and the second stamping cutter 3 are respectively provided with cutting edges at opposite ends and extend into the cavity; the inner wall support assembly is disposed between the first die body 11 and the second die body 12, including a first inner support member 41 and a second inner support member 42 that can extend into the inside of the pipe foot and are located on both sides of its pre-cut line. When the first stamping cutter 2 and the second stamping cutter 3 perform oblique cutting stamping on the pipe foot, the second inner support member 42 can move away from the first inner support member 41 along the axial direction of the support column 43.

[0030] It also includes a connecting frame 5, in which the first die body 11 and the second die body 12 are slidably disposed in the connecting frame 5. Two air cylinders or two hydraulic cylinders are disposed outside the connecting frame 5. The output rods of the air cylinders or hydraulic cylinders pass through the connecting frame 5 and are connected to the first die body 11 and the second die body 12 to drive the first die body 11 and the second die body 12 to move in opposite directions.

[0031] A beveling stamping die for the foot of a furniture fitting mainly includes a die base, a set of stamping blades, and an inner wall support assembly. The die base is equipped with a first die body 11 and a second die body 12 that can move in opposite directions. Inclined grooves 13 are respectively formed on opposite sides of the die body, which together enclose a cavity matching the shape of the fitting foot when the die is closed. A first stamping blade 2 and a second stamping blade 3 penetrate the top and bottom of the die base, respectively, with cutting edges at their opposite ends extending into the cavity for beveling. The inner wall support assembly is located between the first die body 11 and the second die body 12, extending into the fitting foot, and effectively supports the inner walls of the fitting on both sides of the cutting line through a first inner support member 41 and a second inner support member 42. During the stamping process, the second inner support member 42 can move axially away from the first inner support member 41 along the support column 43, ensuring stable support of the inner wall of the fitting during beveling. In addition, the mold is also provided with a connecting frame 5. The first cavity mold body 11 and the second cavity mold body 12 are slidably installed in the connecting frame 5. They are driven by two cylinders or hydraulic cylinders from the outside, so that their output rods pass through the connecting frame 5 and are connected to the first cavity mold body 11 and the second cavity mold body 12 respectively, thereby realizing the opposite movement of the two.

[0032] First, the foot of the pipe fitting is placed between the first die body 11 and the second die body 12. The cylinder or hydraulic cylinder is activated to drive the two to close in opposite directions, forming a cavity that matches the shape of the pipe fitting. At the same time, the inner wall support assembly extends into the inside of the foot of the pipe fitting, and the first inner support 41 and the second inner support 42 support the inner walls on both sides of the cutting line, respectively. Next, the first stamping cutter 2 and the second stamping cutter 3 perform oblique stamping at the same time. The second inner support 42 moves axially during the stamping process to maintain the continuity of the inner wall support. Finally, after the stamping is completed, all components are reset and the processed pipe fitting is taken out.

[0033] By working together with the opposing movable die body and the internal support components, the inner wall of the pipe foot is always fully supported during the oblique cutting and stamping process, which significantly reduces the pipe deformation problem and improves the cutting accuracy and surface quality.

[0034] like Figures 4-9 As shown, the inner wall support assembly also includes a support column 43, which can extend coaxially into the interior of the pipe foot; the first inner support 41 and the second inner support 42 are ring-shaped structures and are sleeved on the support column 43; the center of the opposite end of the first stamping knife 2 and the second stamping knife 3 is provided with a semi-circular cutting edge 21 for avoiding the support column 43.

[0035] The inner wall support assembly of the mold further includes a support column 43 that can coaxially extend into the interior of the tube foot, thus providing a core base axis for the entire support system. Both the first inner support member 41 and the second inner support member 42 are designed as ring structures and are sequentially fitted onto this support column 43, ensuring the accuracy of support positioning and the stability of movement. To completely avoid this core support structure during the oblique cutting and stamping process, the first stamping cutter 2 and the second stamping cutter 3 are specially equipped with precise semi-circular cutting edges 21 at the center of their opposite ends. This allows the stamping cutters to avoid the support column 43 when completing the cutting operation, thereby achieving uninterrupted collaborative operation between the cutting action and the internal support.

[0036] In the critical step of the stamping cutter's oblique cutting, the cutter head with a semi-circular cutting edge 21 accurately advances along the pipe wall. Because there is a clearance space in the center, the cutter does not need to contact the internal support column 43, effectively avoiding mutual interference and ensuring the smoothness and stability of the cutting process.

[0037] like Figure 4 As shown, the support column 43 is provided with a first limiting ring 44 and a second limiting ring 45 coaxial with it, and the first inner support member 41 and the second inner support member 42 are disposed between the first limiting ring 44 and the second limiting ring 45.

[0038] To ensure the precision and stability of the inner wall support assembly within the pipe fitting, the support column 43 is equipped with a first limiting ring 44 and a second limiting ring 45 coaxial with it. The first inner support member 41 and the second inner support member 42 are positioned between these two limiting rings, forming a stable support module with restricted axial movement. This limiting structure clearly defines the initial working range of the inner support member on the support column 43, preventing axial movement during the support process, thereby ensuring that the supporting force is applied precisely and consistently to the inner walls on both sides of the pre-cut line at the pipe fitting foot.

[0039] When the inner wall support assembly extends into the pipe, the first limiting ring 44 and the second limiting ring 45 ensure that the first inner support 41 and the second inner support 42 can be quickly positioned to the preset support position. During the subsequent stamping and movement of the second inner support 42, this limiting structure always provides a reliable axial reference for the support system, ensuring the stability of the support.

[0040] like Figure 4 As shown, an elastic element 46 is provided between the second inner support member 42 and the second limiting ring 45.

[0041] To enable the second inner support 42 to move adaptively during the stamping process and automatically reset after stamping, an elastic element 46 is provided between the second inner support 42 and the second limiting ring 45. This allows the force acting on the pipe's foot during the oblique cutting stamping of the first and second stamping cutters 3 to push the second inner support 42, overcoming the elastic force of the elastic element 46, and smoothly moving it away from the first inner support 41, providing necessary clearance for the cutting process. At the instant the oblique cutting stamping action is completed and the stamping cutters are withdrawn, the second inner support 42 immediately resets automatically under the restoring force of the elastic element 46, preparing for the next stamping cycle.

[0042] When the stamping cutter makes a slanted cut and pushes the tube material, the second inner support 42 is passively retracted, compressing the elastic element 46 to store energy. When the stamping is completed and the cutter retracts, the compressed elastic element 46 releases energy, driving the second inner support 42 to accurately return to its initial position, and together with the first inner support 41, it re-forms a complete support system, so as to smoothly remove the processed tube and put in a new workpiece to be processed.

[0043] like Figures 7-9 As shown, a connecting seat 431 is provided at one end of the support column 43 away from the foot of the pipe fitting; parallelogram linkage assemblies 47 are connected between the connecting seat 431 and the first mold cavity 11, and between the connecting seat 431 and the second mold cavity 12; when the first mold cavity 11 and the second mold cavity 12 move towards each other to close the mold, the two sets of parallelogram linkage assemblies 47 move accordingly, and drive the connecting seat 431 and the support column 43 to move in a straight line, so that the support column 43 is inserted into the foot of the pipe fitting.

[0044] To achieve precise coordination between the support column 43 and the die body, a connecting seat 431 is provided at the end of the support column 43 facing away from the foot of the pipe fitting. Parallelogram connecting rod assemblies 47 are hinged between the connecting seat 431 and the first die body 11, and between the connecting seat 431 and the second die body 12. The parallelogram connecting rod assemblies 47 ensure that when the first die body 11 and the second die body 12 are driven to move towards each other for mold closing, the two sets of parallelogram connecting rod assemblies 47 will move synchronously, converting the lateral movement of mold closing into linear movement of the connecting seat 431 and the support column 43 along their axes. This allows the support column 43 to be inserted into the foot of the pipe fitting in a timely manner during mold closing, preparing for subsequent inner wall support and punching.

[0045] While the first mold cavity 11 and the second mold cavity 12 are closed by a cylinder or hydraulic cylinder, the support column 43 is simultaneously and precisely inserted into the interior of the tube through the transmission of the parallelogram linkage assembly 47. This process achieves the synchronous completion of external mold closing and internal support establishment, with smooth and efficient action.

[0046] like Figure 8 As shown, both the first inner support member 41 and the second inner support member 42 are coaxially connected to the support column 43 via a spline structure.

[0047] To ensure precise alignment of the internal supports, both the first inner support member 41 and the second inner support member 42 are coaxially connected to the support column 43 via a spline structure. This effectively prevents accidental rotation of the first inner support member 41 and the second inner support member 42 relative to the support column 43 during installation or operation. Through the guiding and positioning function of the spline, the opposing surfaces of the two inner supports are forcibly constrained at a fixed angular orientation, thereby ensuring that their support surfaces are always precisely aligned with the pre-cut dividing line of the pipe fitting foot and are on the same plane, thus enabling precise oblique cutting.

[0048] When the support column 43 is inserted into the tube under the drive of the linkage mechanism, the spline structure can immediately guide the two inner supports into the correct angular position. Throughout the entire stamping process and the movement of the second inner support 42, this structure maintains the angular relationship between the inner support and the tube cutting line, eliminating problems such as uneven support or interference with punching caused by the deflection of the support.

[0049] like Figure 8 As shown, the edge of the second inner support member 42 facing the first inner support member 41 is chamfered.

[0050] To optimize the movement of the second inner support 42 during the stamping process, making it smoother and more natural, a chamfer is applied to the edge of the second inner support 42 facing the first inner support 41. This ensures that when the first stamping cutter 2 and the second stamping cutter 3 move towards each other, perform a bevel cut, and gradually approach each other, their cutting edges or bodies can first contact this inclined guide surface. Utilizing the bevel formed by this chamfer, the stamping cutter can smoothly and naturally push the second inner support 42 away from the first inner support 41, thus completing the necessary clearance. This contact and pushing is a continuous, gradual process, effectively avoiding rigid impact and converting the interaction force into smooth lateral displacement.

[0051] During the oblique cutting stamping, the advancing stamping cutter first contacts the chamfered edge of the second inner support member 42; as the stamping cutter continues to feed, the second inner support member 42 is smoothly pushed open by the guiding action of the chamfered slope and begins to compress the elastic element 46 behind it. The whole process is naturally triggered by the stamping action and does not require additional drive.

[0052] like Figure 4 and Figure 5 As shown, a demolding ring 48 is provided at the end of the second inner support member 42 facing away from the first inner support member 41; an elastic connecting component is provided between the demolding ring 48 and the first inner support member 41; the first mold cavity 11 and the second mold cavity 12 are formed with abutting surfaces 14 for abutting against the demolding ring 48; the distance between the second inner support member 42 and the demolding ring 48 is greater than the distance between the pipe fitting foot waste and the demolding ring 48; when the demolding ring 48 abuts against the abutting surface 14 and the second inner support member 42 continues to move toward the demolding ring 48, the pipe fitting foot waste is pushed away from the second inner support member 42 by the demolding ring 48.

[0053] To achieve automatic stripping of waste material after punching, a demolding ring 48 is provided at the end of the second inner support member 42 opposite to the first inner support member 41. The demolding ring 48 is connected to the first inner support member 41 via an elastic connecting assembly. Simultaneously, abutment surfaces 14 for abutting against the demolding ring 48 are machined inside the first die body 11 and the second die body 12, respectively. The preset distance between the second inner support member 42 and the demolding ring 48 is set to be greater than the initial distance between the waste material from the pipe fitting foot attached to the second inner support member 42 after punching and the demolding ring 48.

[0054] When the beveling is completed and the die body begins to open, the ejector ring 48 moves under the traction of the elastic connecting assembly until it contacts and is blocked by the contact surface 14 inside the die body. At this time, the second inner support member 42 continues to move toward the ejector ring 48 under the reset mechanism or external drive. Due to the aforementioned gap difference and because the pipe scrap is conical, the continuous forward movement of the second inner support member 42 will cause the pipe scrap at the foot to be pressed against the edge of the stationary ejector ring 48 and forcibly peeled off, thereby reliably falling off the surface of the second inner support member 42, completing the automatic demolding.

[0055] like Figure 5 As shown, waste grooves are also provided on the opposite sides of the first die body 11 and the second die body 12.

[0056] To ensure the continuity and automation of the stamping process, scrap grooves are specially provided on the opposite sides of the first die body 11 and the second die body 12. After the stamping action is completed, the scrap material from the cut-off tube foot falls directly into the scrap channel 15 formed between the two scrap grooves under the action of gravity, stamping inertia, or the subsequent ejection mechanism, and slides down rapidly along the channel, eventually being collected or discharged to a designated area outside the mold. This process occurs immediately after the die is closed and the workpiece is cut, achieving rapid separation of scrap material and workpiece.

[0057] like Figure 4 and Figure 10 As shown, the second inner support member 42 has an axially extending mounting blind hole 421 at one end facing the demolding ring 48; the elastic connection assembly includes: a connecting pin 491, one end of which has a pin cap 4911, the pin cap 4911 being accommodated in the mounting blind hole 421 and being able to slide along its axial direction, and the other end of the connecting pin 491 being fixedly connected to the demolding ring 48; a positioning sleeve 492, which is coaxially fixed at the opening of the mounting blind hole 421 and slides in cooperation with the rod of the connecting pin 491; and a spring 493, which is disposed in the mounting blind hole 421 and elastically abuts against the pin cap 4911 of the connecting pin 491 and the bottom of the groove of the mounting blind hole 421.

[0058] To achieve an elastic connection between the demolding ring 48 and the second inner support member 42, and to ensure the accuracy and stability of their relative movement, an axially extending mounting blind hole 421 is provided at one end of the second inner support member 42 facing the demolding ring 48. The elastic connection assembly mainly consists of a connecting pin 491, a positioning sleeve 492, and a spring 493. One end of the connecting pin 491 is provided with a pin cap 4911, which is accommodated in the mounting blind hole 421 and can slide along its axial direction. The other end of the connecting pin 491 is fixedly connected to the demolding ring 48. A positioning sleeve 492 is coaxially fixed at the opening of the mounting blind hole 421, and its inner hole forms a sliding fit with the rod of the connecting pin 491, providing reliable guidance for the movement of the connecting pin 491. Spring 493 is disposed inside mounting blind hole 421 and always elastically abuts between pin cap 4911 of connecting pin 491 and the bottom of groove of mounting blind hole 421, providing a flexible preload force for demolding ring 48 that is always directed toward second inner support 42.

[0059] Under normal support, the preload of spring 493 keeps the ejector ring 48 in its initial fixed position relative to the second inner support member 42 via connecting pin 491. When the ejector ring 48 encounters resistance during mold opening due to contact with the abutment surfaces 14 of the first and second mold bodies 11 and 12, the second inner support member 42 continues to move, compressing the spring 493 within the blind hole 421. At this time, the pin cap 4911 of connecting pin 491 slides within the blind hole, and the positioning sleeve 492 ensures that connecting pin 491 and ejector ring 48 do not wobble, thus achieving a brief pause for ejector ring 48 and continued forward movement of the second inner support member 42, completing the ejection of scrap. Subsequently, under the restoring force of spring 493, all components return to their original positions.

[0060] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A bevel-cutting stamping die for the legs of tubular fittings used in furniture manufacturing, characterized in that, include: The die holder has a first die body and a second die body that can move towards each other. Inclined grooves are respectively opened on the opposite sides of the first die body and the second die body. When the first die body and the second die body are closed, the two grooves together form a cavity that matches the shape of the pipe foot. The first stamping cutter and the second stamping cutter are respectively disposed at the top and bottom of the die holder. The first stamping cutter and the second stamping cutter are respectively provided with cutting edges at opposite ends and extend into the cavity. An inner wall support assembly, disposed between a first die body and a second die body, includes a first inner support member and a second inner support member that can extend into the interior of the pipe fitting foot and are located on both sides of its pre-cut line. When the first stamping cutter and the second stamping cutter perform oblique stamping on the pipe fitting foot, the second inner support member can move away from the first inner support member along the axial direction of the support column. The inner wall support assembly also includes a support column that can extend coaxially into the interior of the pipe fitting foot. The first inner support member and the second inner support member are ring-shaped structures and are sleeved on the support column; The center of the opposite end of the first and second stamping cutters is provided with a semi-circular cutting edge to avoid the support column; A connecting seat is provided at the end of the support column opposite to the foot of the pipe fitting; Parallelogram connecting rod assemblies are connected between the connecting seat and the first cavity body, and between the connecting seat and the second cavity body; When the first and second mold cavities move toward each other to close the mold, the two sets of parallelogram linkage assemblies move accordingly, driving the connecting seat and support column to move in a straight line, so that the support column is inserted into the foot of the pipe fitting.

2. The beveling stamping die for the foot of a furniture manufacturing tube as described in claim 1, characterized in that, The support column is provided with a first limiting ring and a second limiting ring coaxial with it, and the first inner support member and the second inner support member are arranged between the first limiting ring and the second limiting ring.

3. The beveling stamping die for the foot of a furniture manufacturing tube as described in claim 2, characterized in that, An elastic element is provided between the second inner support member and the second limiting ring.

4. A bevel-cutting stamping die for the foot of a furniture manufacturing tube, as described in any one of claims 1-3, characterized in that, Both the first and second inner support members are coaxially connected to the support column via a spline structure.

5. A beveling die for the foot of a furniture manufacturing tube as described in any one of claims 1-3, characterized in that, The edge of the second inner support member facing the first inner support member is chamfered.

6. A bevel-cutting stamping die for the legs of tubular fittings used in furniture production, as described in any one of claims 1-3, characterized in that, A demolding ring is provided at the end of the second inner support member that is away from the first inner support member; An elastic connection assembly is provided between the demolding ring and the first inner support member; The first and second mold bodies have abutment surfaces for abutting against the demolding ring; The distance between the second inner support and the demolding ring is greater than the distance between the scrap at the foot of the pipe and the demolding ring; When the demolding ring abuts against the abutting surface and the second inner support continues to move toward the demolding ring, the waste material at the foot of the pipe is pushed away from the second inner support by the demolding ring.

7. The beveling stamping die for the foot of a furniture manufacturing tube as described in claim 6, characterized in that, Waste grooves are also provided on the opposite sides of the first and second die bodies.

8. A bevel-cutting stamping die for the foot of a furniture manufacturing tube, as described in claim 6, is characterized in that... The second inner support member has an axially extending blind mounting hole at the end facing the demolding ring; The flexible connection components include: A connecting pin has a pin cap at one end, which is accommodated in the mounting blind hole and can slide along its axial direction; the other end of the connecting pin is fixedly connected to the demolding ring. The positioning sleeve is coaxially fixed to the opening of the mounting blind hole and slides with the rod of the connecting pin; A spring is disposed within the mounting blind hole and elastically abuts against the pin cap of the connecting pin and the bottom of the groove of the mounting blind hole.

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