A continuous forming device for plugs

Abstract

The utility model belongs to the field of forming, provide a kind of for plug's continuous forming device, it includes: fixed mould seat, it is equipped with material guiding block thereon, material guiding block is used to guide the movement of material tape sent out by feeder along fixed mould seat length direction;Nitrogen spring and several interval setting forming groove, be located on fixed mould seat, the bottom of each forming groove is provided with nitrogen spring.Compared with prior art, the utility model has the advantages that nitrogen spring is set on fixed mould seat and cooperates with material guiding block, realizes material tape stable conveying and accurate positioning;And in one continuous stamping stroke, complete connecting plate contour cutting, recess forming, extrusion, through hole punching, pipe orifice punching and final separation and other multi-process, especially through extrusion block to recess bottom wall punch and synchronously form with the vertical surface of ladder part The edge of pipe orifice is flush, ensure structure precision and assembly reliability, realize high efficiency, high precision, full sequence continuous automation production.

Description

Technical Field

[0001] This utility model belongs to the field of molding, and specifically relates to a continuous molding device for plugs. Background Technology

[0002] Plugs are typically made from metal strips (such as cold-rolled steel sheets, stainless steel strips, or copper alloy strips) through a stamping process. They are widely used in sealing and plugging the internal fluid channels of air conditioning refrigeration systems, fuel lines, braking systems, cooling circuits, and household appliances. With the increasing demand from modern manufacturing industries for lightweight, integrated, highly reliable, and mass-produced parts, higher requirements are being placed on the structural precision, surface quality, dimensional stability, and production efficiency of these plugs.

[0003] Traditional processing methods often employ single-operation molds or multi-station progressive dies to complete each operation step by step. Single-operation molds have the advantages of simple structure and convenient debugging, but require multiple mold changes and manual loading and unloading, resulting in low automation, slow production cycle, and difficulty in meeting the needs of large-scale production. While conventional multi-station progressive dies can achieve a certain degree of continuous production, they still have significant shortcomings when dealing with plugs with complex stepped structures and high assembly precision requirements. In particular, when the plug needs to meet the design requirement that "the edge of the pipe opening is coplanar with the vertical surface of the stepped part" (this feature directly affects the distribution of the pre-tightening force of the sealing ring assembly and the anti-leakage performance), the traditional method usually involves punching holes first and then partially flanging or stretching to form a short pipe. However, due to factors such as material springback, mold fitting clearance, and unreasonable forming sequence, it is very easy to cause pipe opening warping, uneven edges, or step differences with the stepped surface, which seriously affects the assembly sealing and reliability. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a continuous forming device for plugs that is simple in structure, has good stability, and can ensure product size consistency.

[0005] The objective of this utility model can be achieved by addressing the following technical problem: a continuous forming device for plugs is proposed, wherein the plug has interconnected main body blocks and connecting plates, characterized in that the continuous forming device comprises:

[0006] A fixed mold base is provided with a material guide block, which is used to guide the material strip fed by the feeder to move along the length direction of the fixed mold base;

[0007] A nitrogen spring and several spaced-apart molding grooves are provided on the fixed mold base. The bottom of each molding groove is provided with a nitrogen spring, which is used to lift the strip to the top of the fixed mold base.

[0008] A moving mold base is provided with a cutting area and a stamping area arranged sequentially thereon. The cutting area is used to cut and form the outline of the connecting plate on the strip, and the connecting plate and the strip are connected by a connecting belt. The stamping area includes a forming block, a punching post, and an extrusion block. The forming block is used to form a recessed portion with an inclined surface on the connecting plate and to extrude the inclined surface into a stepped portion. The punching post is used to form a through hole at the bottom of the recessed portion. The extrusion block punches and cuts the bottom wall of the recessed portion to form the opening of the main body block, and the edge of the opening is coplanar with the vertical surface of the stepped portion.

[0009] A positioning zone and a stripping zone are provided on the moving mold base. The positioning zone moves against the end of the forming plug so that the stripping zone can separate the connecting strip from the forming plug.

[0010] In the aforementioned continuous forming device for plugs, a fixing plate and a forming plate are also installed on the fixed mold base. A contour block is installed inside the forming plate, and the forming groove is located inside the contour block. The nitrogen spring passes through the fixing plate and extends to the bottom of the forming groove.

[0011] In the aforementioned continuous forming apparatus for plugs, the feed block includes a connecting portion and an extension portion. The connecting portion is installed inside the fixed plate, and the extension portion is arranged perpendicularly to the connecting portion and extends above the forming plate to restrict the material strip from falling off the fixed mold base.

[0012] In the aforementioned continuous forming device for plugs, the forming block includes a first forming column and a second forming column, wherein a forming inclined surface is formed on the first forming column and a stepped guide surface is formed on the second forming column.

[0013] In the above-mentioned continuous forming device for plugs, a fixed seat is connected inside the moving mold base. The punching column and the extrusion block are both movably disposed inside the fixed seat. A pressing surface is formed at the bottom of the fixed seat. The pressing surface is movably pressed against the bottom wall of the forming groove to guide the punching column and the extrusion block to be inserted vertically into the fixed mold base.

[0014] In the aforementioned continuous forming device for plugs, the cutting area includes a first cutting block, a second cutting block, and a shaping block. The first cutting block is used to make symmetrical cuts on both sides along the width direction of the strip, and the second cutting block is used to make cuts on one side along the length direction of the strip, so that there is a gap between two adjacent connecting plates. The shaping block is used to cut the material head at the edge to form the connecting plate.

[0015] In the aforementioned continuous forming device for plugs, a chip removal hole is formed between the fixed mold base, the fixed plate, and the forming plate. The chip removal hole is connected to the forming groove to discharge waste chips into the receiving box inside the fixed mold base.

[0016] In the aforementioned continuous forming device for plugs, a guide slope is also formed in the fixed mold base, and a chip removal channel is formed between two adjacent molding blocks. The guide slope is used to guide the waste chips in the chip removal channel to the receiving box.

[0017] In the aforementioned continuous forming device for plugs, the alignment zone includes a clamping post and a limiting block. An elastic element is connected between the clamping post and the moving mold base. The limiting block is detachably connected to the moving mold base and is movably clamped against the end of the formed plug.

[0018] In the above-mentioned continuous forming device for plugs, the stripping zone includes a stripping block and several discharge slides. The stripping block is used to cut the connecting strip. The fixed mold base, the fixed plate and the forming plate together form the several discharge slots, and each discharge slot is provided with a corresponding discharge slide.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The present invention provides a continuous forming device for plugs by setting a nitrogen spring on the fixed mold base and cooperating with the feeding block to achieve stable material conveying and precise positioning; and integrating a cutting area, a multi-station stamping area and a straightening and unloading area on the moving mold base. In one continuous stamping stroke, multiple processes such as connecting plate contour cutting, recess forming, stepped extrusion, through hole punching, pipe end punching and final separation are completed. In particular, the extrusion block punches the bottom wall of the recess and simultaneously forms the pipe end edge coplanar with the vertical surface of the stepped part, ensuring structural accuracy and assembly reliability. The whole process realizes high-efficiency, high-precision, and fully automated continuous production from strip material to complete plug product.

[0021] (2) The feeding block adopts an L-shaped structure design to form a physical limit on the lateral movement of the material belt, which effectively prevents the material belt from shifting or coming off due to vibration or uneven tension during high-speed feeding. The connecting part is embedded in the fixed plate to ensure the installation stability of the feeding block. The overall structure is compact and reliable, which improves the guiding accuracy and running stability of the feeding process and reduces the equipment failure rate.

[0022] (3) The feeding ramp and the chip removal channel work together to form an efficient chip guide path, which reduces the number of collection boxes used and avoids chip blockage, thus improving chip removal efficiency and reliability. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the material strip forming plug structure;

[0024] Figure 2 This is a schematic diagram of the fixed mold base;

[0025] Figure 3 This is a schematic diagram of the moving mold base;

[0026] Figure 4 This is a sectional view of the structure during molding;

[0027] Figure 5 yes Figure 2 A magnified view of a portion of point A in the middle.

[0028] In the diagram, 1 is the material strip; 10 is the plug; 100 is the main block; 101 is the connecting plate; 101a is the recessed part; 101b is the stepped part; 101c is the through hole; 101d is the pipe opening; and 11 is the connecting strip.

[0029] 2. Fixed mold base; 20. Feeding block; 200. Connecting part; 201. Extension part; 21. Nitrogen spring; 22. Fixing plate; 23. Forming plate; 230. Contouring block; 230a. Forming groove; 230b. Chip removal channel; 24. Chip removal hole; 25. Feeding inclined surface; 26. Receiving box; 27. Feeding bracket; 270. Baffle;

[0030] 3. Moving mold base; 30. Cutting area; 300. First cutting block; 301. Second cutting block; 302. Shaping block; 31. Stamping area; 310. Forming block; 310a. First forming pillar; 310b. Forming inclined surface; 310c. Second forming pillar; 310d. Stepped guide surface; 311. Punching pillar; 312. Extrusion block; 32. Fixed base; 320. Pressing surface; 33. Alignment area; 330. Clamping pillar; 331. Limiting block; 34. Stripping area; 340. Cutting block; 341. Unloading slide; 342. Unloading groove. Detailed Implementation

[0031] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings to further illustrate the technical solutions of the present invention. However, the present invention is not limited to these embodiments.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0033] like Figures 1 to 5As shown, this utility model discloses a continuous forming device for a plug 10. The plug 10 has a main body block 100 and a connecting plate 101 connected to each other. The continuous forming device includes: a fixed mold base 2, on which a feeding block 20 is disposed, which is used to guide the material strip 1 fed by the feeder to move along the length direction of the fixed mold base 2; a nitrogen spring 21 and several spaced forming grooves 230a, which are disposed on the fixed mold base 2. Each forming groove 230a has a nitrogen spring 21 at its bottom, which is used to lift the material strip 1 above the fixed mold base 2; and a moving mold base 3, on which a cutting area 30 and a stamping area 31 are disposed in sequence. The cutting area 30 is used to cut the outline of the forming connecting plate 101 on the material strip 1, and the connecting plate 101 and the material strip 1 are connected by a gas flow. The connecting strip 11 is used for connection; the stamping area 31 includes a forming block 310, a punching post 311 and an extrusion block 312. The forming block 310 is used to form a recess 101a with an inclined surface on the connecting plate 101 and to extrude the inclined surface to form a stepped portion 101b; the punching post 311 is used to form a through hole 101c at the bottom of the recess 101a. The extrusion block 312 punches the bottom wall of the recess 101a to form the opening 101d of the main block 100, and the edge of the opening 101d is coplanar with the vertical surface of the stepped portion 101b; the straightening area 33 and the stripping area 34 are provided on the moving mold base 3. The straightening area 33 moves against the end of the forming plug 10 so that the stripping area 34 can separate the connecting strip 11 from the forming plug 10.

[0034] like Figure 1 and Figure 2 As shown, the strip 1 is pushed into the mold area by an external feeder at a set step distance. Symmetrically arranged guide blocks 20 form a guide channel matching the width of the strip 1, guiding its lateral movement and ensuring precise advancement along the length of the fixed mold base 2. Feeding stops when the strip 1 reaches the designated station. At this point, the strip 1 is aligned with the first forming groove 230a. As the moving mold base 3 descends, the cutting area 30 pre-cuts the strip 1 at the current station, creating the outline of the connecting plate 101 (not yet fully formed). The connecting plate 101 is then connected to the main strip 1 via the connecting belt 11, maintaining overall structural strength and continuous feeding reference. Because this embodiment includes a nitrogen spring 21, when the moving mold base 3 moves away from the fixed mold base 2, the nitrogen spring 21 can lift the strip 1 and the already formed portion above the fixed mold base 2, allowing the feeder to push the entire strip 1 from the fixed mold base 2. Figure 2Moving from left to right, after the material strip 1 is delivered into place, as the moving mold base 3 repeatedly performs stamping and forming actions against the fixed mold base 2, the forming block 310 first contacts the connecting plate 101 and presses in the material under pressure, forming a recessed part 101a with an inclined surface; then, pressure continues to be applied at the next station, causing the inclined surface to undergo plastic deformation and fold inward, finally extruding into a stepped part 101b with vertical steps, providing a positioning stop for subsequent sealing ring assembly; then, the extrusion block 312 at the next station further penetrates, using a sharp cutting edge to punch and cut the material around the bottom wall of the recessed part 101a, causing the through hole 101c to expand outward. The main body block 100 with a short cylindrical opening 101d is formed. During this process, the stroke of the extrusion block 312, the cutting edge angle, and the mold fitting tolerance are precisely controlled to ensure that the outer edge of the opening 101d is strictly coplanar with the vertical surface of the stepped part 101b, without steps or burrs. Finally, with the further cutting of the cutting area 30, the connecting plate 101 and the main body block 100 can be completely formed. The positioning area 33 accurately positions the formed plug 10 before it is detached, ensuring that the unloading area 34 can accurately cut off the excess material on the plug 10 (i.e., the connecting strip 11 and other parts of the strip 1). As can be seen, this device, by setting the material guide block 20 on the fixed mold base 2 and the nitrogen spring 21 working together, achieves precise guidance and automatic lifting of the material strip 1, avoiding deviation or jamming of the material strip 1 during movement; the cutting area 30 and the stamping area 31 on the moving mold base 3 sequentially complete the contour cutting of the connecting plate 101 and the forming of the main body block 100, realizing the continuous automated processing of the plug 10 from the material strip 1 to the finished product. In particular, through the cooperation of the forming block 310, the punching column 311 and the extrusion block 312, the forming of the recess 101a, the through hole 101c and the tube opening 101d are completed simultaneously in one stamping stroke, and the edge of the tube opening 101d is made coplanar with the vertical surface of the stepped part 101b, which significantly improves the structural accuracy and assembly consistency of the plug 10; the alignment area 33 and the stripping area 34 work together to ensure that the plug 10 is stably positioned and smoothly separated after complete forming, effectively preventing product deformation or falling off, and improving production efficiency and product yield.

[0035] like Figure 2 As shown, in this embodiment, a material guide bracket 27 is also installed between the fixed mold base 2 and the feeder (not shown in the figure). The material guide bracket 27 is symmetrically provided with baffles 270 to guide and limit the material strip 1 as a whole in conjunction with the material guide block 20. At the same time, the material guide bracket 27 can also support the end of the material strip 1 to prevent the material strip 1 from drooping and affecting the subsequent normal molding operation.

[0036] The fixed mold base 2 is also equipped with a fixed plate 22 and a forming plate 23. A contour block 230 is installed inside the forming plate 23, and a forming groove 230a is located inside the contour block 230. A nitrogen spring 21 passes through the fixed plate 22 and extends to the bottom of the forming groove 230a.

[0037] like Figure 2 and Figure 3 As shown, this embodiment uses a modular structure formed by a fixed plate 22 and a forming plate 23, and embeds a contour block 230 in the forming plate 23 to form a forming groove 230a, which improves the maintainability and replacement flexibility of the mold structure. The contour block 230 can be replaced according to different plug shapes, enhancing the versatility of the device; the nitrogen spring 21 passes through the fixed plate 22 and acts on the bottom of the forming groove 230a, ensuring a stable and uniform lifting force on the material strip 1, avoiding warping or positioning deviation of the material strip 1 due to uneven force, and further ensuring the stability and forming accuracy of continuous feeding.

[0038] The feed block 20 includes a connecting part 200 and an extension part 201. The connecting part 200 is installed inside the fixed plate 22, and the extension part 201 is arranged perpendicularly to the connecting part 200 and extends above the forming plate 23 to restrict the material strip 1 from falling out of the fixed mold base 2.

[0039] like Figure 2 and Figure 5 As shown, the feeding block 20 in this embodiment adopts an L-shaped structure design, with its extension 201 protruding above the forming plate 23, forming a physical limit on the lateral movement of the material strip 1, effectively preventing the material strip 1 from shifting or coming off due to vibration or uneven tension during the feeding process; while the connecting part 200 is embedded in the fixing plate 22, ensuring the installation stability of the feeding block 20. The overall structure is compact and reliable, improving the guiding accuracy and running stability of the feeding process, and reducing the equipment failure rate.

[0040] The molding block 310 includes a first molding column 310a and a second molding column 310c. A molding inclined surface 310b is formed on the first molding column 310a, and a stepped guide surface 310d is formed on the second molding column 310c.

[0041] like Figure 3 and Figure 4 As shown, in this embodiment, the forming inclined surface 310b of the first forming column 310a is used to press out a recessed portion 101a with an inclined surface on the connecting plate 101. The stepped guiding surface 310d of the second forming column 310c gradually shapes the inclined surface into a stepped portion 101b in subsequent stamping, realizing progressive forming, reducing the single stamping pressure requirement, and reducing mold wear. This step-by-step forming method avoids material stress concentration, prevents cracking or springback, improves the dimensional accuracy and surface quality of the stepped structure of the plug 10, and extends the service life of the mold.

[0042] A fixed seat 32 is connected inside the moving mold base 3. The punching column 311 and the extrusion block 312 are movably disposed inside the fixed seat 32. A pressing surface 320 is formed at the bottom of the fixed seat 32. The pressing surface 320 is movably pressed against the bottom wall of the forming groove 230a to guide the punching column 311 and the extrusion block 312 to be inserted vertically into the fixed mold base 2.

[0043] like Figure 3 and Figure 4 As shown, the fixed base 32 in this embodiment integrates a punching column 311 and an extrusion block 312. The pressing surface 320 at its bottom is in close contact with the bottom wall of the forming groove 230a during punching, forming a guiding and supporting structure. This ensures that the punching column 311 and the extrusion block 312 are inserted vertically and accurately into the fixed mold base 2, avoiding skewing or jamming. This structure improves the coaxiality and stability of the punching and extrusion actions, ensures the processing accuracy of the through hole 101c and the tube opening 101d, and reduces vibration and impact during equipment operation, thereby improving processing consistency and safety.

[0044] It should be noted that, in this embodiment, the nitrogen spring 21 gradually begins to apply a lifting force into the forming groove 230a as the moving mold base 3 moves away, thereby lifting the structure formed in the forming groove 230a and the material strip 1 together to the top of the fixed mold base 2, ensuring the normal conveying operation of the material strip 1. As for the forming of the nozzle 101d, the pressing surface 320 plays a certain auxiliary pressing effect to prevent the extrusion block 312 from being misaligned or shifted when forming the through hole 101c in the recessed part 101a. During the process of the extrusion block 312 penetrating the bottom wall of the recessed part 101a, the edge of the bottom wall of the recessed part 101a is directly set coplanar with the vertical surface of the stepped part 101b due to the vertical pressing force of the extrusion block 312 (that is, the forming of the through hole 101c will inevitably cause burrs, but with the pressing of the extrusion block 312, it is directly stretched into one piece with the inner wall of the contour block 230), ensuring that the nozzle 101d on the product meets the customer's usage requirements in subsequent installation or disassembly.

[0045] The cutting area 30 includes a first cutting block 300, a second cutting block 301, and a shaping block 302. The first cutting block 300 is used to make symmetrical cuts on both sides along the width direction of the strip 1. The second cutting block 301 is used to make cuts on one side along the length direction of the strip 1, so that there is a gap between two adjacent connecting plates 101. The shaping block 302 is used to cut the material head at the edge to form the connecting plate 101.

[0046] like Figure 2 and Figure 3As shown, in this embodiment, the first cutting block 300 and the second cutting block 301 cooperate to punch out an approximate outline of the connecting plate 101 on the strip 1. The reason for not directly punching out the entire shape is to avoid affecting the local quality of the connecting plate 101 during the subsequent punching of the main body block 100. It is worth noting that after punching the strip 1, the first cutting block 300 and the second cutting block 301 can both form an approximate outline of the connecting plate 101 and achieve the forming process of the connecting strip 11 between the strip 1 and the connecting plate 101. Therefore, by using multiple segments... The cutting structure features a first cutting block 300 that performs simultaneous cutting on both sides, ensuring the symmetry of the connecting plate 101. The second cutting block 301 completes longitudinal cutting, forming a separation gap between the connecting plates 101 to facilitate subsequent unloading. After the main block 100 is punched and formed, the material ends at the edges of the cutting connecting plate 101 can be further trimmed by the straightening block 302 to ensure that the final formed plug 10 meets the user's requirements and improves the flatness and consistency of the overall shape. This combined cutting method achieves high-precision contour forming, reduces subsequent trimming processes, and improves production efficiency and product appearance quality.

[0047] A chip removal hole 24 is formed between the fixed mold base 2, the fixed plate 22 and the forming plate 23. The chip removal hole 24 is connected to the forming groove 230a to discharge waste chips into the receiving box 26 inside the fixed mold base 2.

[0048] like Figure 4 As shown, this embodiment designs a chip removal hole 24 connecting the fixed mold base 2, the fixed plate 22 and the forming plate 23, and directly connects it to the forming groove 230a. This allows the waste chips generated during punching and cutting to be discharged to the receiving box 26 in a timely manner during the stamping process, preventing the accumulation of waste chips from affecting mold closure or scratching the product surface. This structure realizes automatic chip removal, reduces the frequency of manual cleaning, ensures smooth continuous production, and improves the automation level of the equipment and the cleanliness of the working environment.

[0049] The fixed mold base 2 also has a material guiding slope 25, and a chip removal channel 230b is formed between two adjacent contour blocks 230. The guiding slope is used to guide the waste chips in the chip removal channel 230b to the receiving box 26.

[0050] Similarly, such as Figure 4As shown, this embodiment also utilizes the guide slope 25 in conjunction with the chip removal channel 230b to form an efficient waste chip guiding path. The chip removal channel 230b is mainly for the excess waste material cut during the forming of the connecting plate 101 by the straightening block 302. It is worth noting that since there are two chip removal holes 24, one for waste chips generated during punching and the other for waste chips generated during forming the through hole 101c, both of which are equipped with receiving boxes 26. To reduce the use of receiving boxes 26 and the overall space occupation, this embodiment forms a guide slope 25 in the fixed mold base 2. That is to say, the guide slope 25 can guide the waste chips in the chip removal channel 230b to the receiving box without the need to add an additional receiving box. Therefore, the guide slope 25 uses gravity to guide the waste chips into the receiving box 26, further improving the chip removal efficiency and reliability. This design optimizes the internal flow channel layout of the mold, enhances the self-cleaning ability of the device, reduces maintenance costs, and ensures stable operation for a long time.

[0051] The positioning area 33 includes a retaining post 330 and a limiting block 331. An elastic element is connected between the retaining post 330 and the moving mold base 3. The limiting block 331 is detachably connected to the moving mold base 3 and is movably pressed against the end of the forming plug 10.

[0052] like Figure 3 As shown, in this embodiment, the clamping column 330 provides flexible clamping force through the elastic element, which can pre-fix the formed plug 10 (i.e., clamp the top wall of the connecting plate 101) when the stripping zone 34 punches the connecting strip 11. In conjunction with the limiting block 331, the position of the plug 10 is further restricted, ensuring the smoothness and stability of the stripping zone 34 when punching the connecting strip 11. Therefore, this structure provides stable support and limiting for the entire punching process, preventing the product from shaking or shifting during the stripping process, realizing the precise positioning of the plug 10 before stripping, improving the stripping accuracy, and avoiding product damage or mold jamming.

[0053] The stripping area 34 includes a stripping block 340 and several unloading slides 341. The stripping block 340 is used to cut the connecting strip 11. The fixed mold base 2, the fixed plate 22 and the forming plate 23 together form several unloading grooves 342, and each unloading groove 342 is provided with a corresponding unloading slide 341.

[0054] like Figure 2 As shown, this embodiment is provided with three unloading channels 341. The unloading channels located on both sides of the fixed mold base 2 in the width direction are used to realize the cutting of the connecting strip 11 by the stripper block 340 and the collection of excess waste material, while the unloading channel located at the end of the fixed mold base 2 in the length direction (i.e., Figure 2The rightmost feeding channel is used to collect the formed plugs 10. Relying on the precise cutting of the connecting strip 11 by the stripper block 340, and the connection between the feeding trough 342 and the feeding slide 341, the stripper block 340's cutting action is avoided, and waste material is smoothly discharged from the feeding channel. During this process, the plug 10 separates from the material strip 1, allowing the formed plug 10 to slide out orderly along the slide under gravity, completing automatic feeding. The multi-channel design supports simultaneous feeding of multiple plugs 10, significantly improving production cycle time. The overall structure is simple and efficient, achieving stable feeding without additional robotic arms or air blowing devices, reducing equipment complexity and energy consumption, and improving automation and production efficiency.

[0055] It should be noted that in this invention, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0057] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A continuous forming apparatus for a plug, the plug having interconnected main body blocks and connecting plates, characterized in that, The continuous forming apparatus includes: A fixed mold base is provided with a material guide block, which is used to guide the material strip fed by the feeder to move along the length direction of the fixed mold base; A nitrogen spring and several spaced-apart molding grooves are provided on the fixed mold base. The bottom of each molding groove is provided with a nitrogen spring, which is used to lift the strip to the top of the fixed mold base. A moving mold base is provided with a cutting area and a stamping area arranged sequentially thereon. The cutting area is used to cut and form the outline of the connecting plate on the strip, and the connecting plate and the strip are connected by a connecting belt. The stamping area includes a forming block, a punching post, and an extrusion block. The forming block is used to form a recessed portion with an inclined surface on the connecting plate and to extrude the inclined surface into a stepped portion. The punching post is used to form a through hole at the bottom of the recessed portion. The extrusion block punches and cuts the bottom wall of the recessed portion to form the opening of the main body block, and the edge of the opening is coplanar with the vertical surface of the stepped portion. A positioning zone and a stripping zone are provided on the moving mold base. The positioning zone moves against the end of the forming plug so that the stripping zone can separate the connecting strip from the forming plug.

2. The continuous forming apparatus for plugs according to claim 1, characterized in that, The fixed mold base is also equipped with a fixing plate and a forming plate. A contour block is installed inside the forming plate, and the forming groove is located inside the contour block. The nitrogen spring passes through the fixing plate and extends to the bottom of the forming groove.

3. A continuous forming device for plugs according to claim 2, characterized in that, The feed block includes a connecting part and an extension part. The connecting part is installed inside the fixed plate, and the extension part is arranged perpendicularly to the connecting part and extends above the forming plate to restrict the material strip from falling out of the fixed mold base.

4. A continuous forming apparatus for plugs according to claim 2, characterized in that, The molding block includes a first molding column and a second molding column. A molding slope is formed on the first molding column, and a stepped guide surface is formed on the second molding column.

5. A continuous forming apparatus for plugs according to claim 2, characterized in that, A fixed seat is connected inside the moving mold base. The punching column and the extrusion block are movably disposed in the fixed seat. A pressing surface is formed at the bottom of the fixed seat. The pressing surface is movably pressed against the bottom wall of the forming groove to guide the punching column and the extrusion block to be inserted vertically into the fixed mold base.

6. A continuous forming apparatus for plugs according to claim 4, characterized in that, The cutting area includes a first cutting block, a second cutting block, and a shaping block. The first cutting block is used to make symmetrical cuts on both sides along the width direction of the strip, and the second cutting block is used to make cuts on one side along the length direction of the strip, so that there is a gap between two adjacent connecting plates. The shaping block is used to cut the material head at the edge to form the connecting plate.

7. A continuous forming apparatus for plugs according to claim 2, characterized in that, A chip removal hole is formed between the fixed mold base, the fixed plate, and the forming plate. The chip removal hole is connected to the forming groove to discharge waste chips into the receiving box inside the fixed mold base.

8. A continuous forming apparatus for plugs according to claim 7, characterized in that, The fixed mold base also has a guide slope, and a chip removal channel is formed between two adjacent contour blocks. The guide slope is used to guide the waste chips in the chip removal channel to the receiving box.

9. A continuous forming apparatus for plugs according to claim 1, characterized in that, The alignment area includes a retaining post and a limiting block. An elastic element is connected between the retaining post and the moving mold base. The limiting block is detachably connected to the moving mold base and is movably pressed against the end of the forming plug.

10. A continuous forming apparatus for plugs according to claim 2, characterized in that, The stripping area includes a stripping block and several discharge slides. The stripping block is used to cut the connecting strip. The fixed mold base, the fixed plate and the forming plate together form several discharge slots, and each discharge slot is provided with a corresponding discharge slide.

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