Combined pressing apparatus for profiled silver contacts

Abstract

The present application relates to silver contact technical field, specifically is related to a kind of combined pressing equipment for special-shaped silver contact;Including: base frame;First linear driver, vertically fixedly arranged on the base frame, and the first linear driver is equipped with the adjusting frame that can longitudinally slip;Pressing module, vertically rotating setting on the adjusting frame, the pressing module is equipped with three groups of from outside to inside sequentially nested rotating frame and respectively embeddedly installed in three groups of rotating frame multiple forming blocks;When the forming block on each group of rotating frame is all rotated and adjusted to pressing position, multiple forming blocks are overlapped between upper and lower and form pressing cavity, the rotation angle of three groups of rotating frame can be adjusted respectively;Feed module, the feed module is slidingly arranged on the base frame and located the directly below of pressing cavity, and the feed module is equipped with the pressing head that can push silver contact blank to pressing cavity;The present application not only can flexibly adjust different pressing cavity according to pressing demand and pressing efficiency is fast, precision is high.

Description

Technical Field

[0001] This invention relates to the field of silver contact technology, and more specifically to a combined pressing device for irregularly shaped silver contacts. Background Technology

[0002] In the manufacturing process of low-voltage electrical appliances, relays, and contactors, silver contacts are widely used as key conductive components in circuit switching control. The quality of their pressing and molding directly affects the overall performance and service life of the device. Especially for irregularly shaped silver contacts, due to their diverse geometric structures and varying dimensions, traditional pressing equipment often uses fixed mold structures, making it difficult to adapt to the molding requirements of various contact structures.

[0003] Existing pressing equipment typically lacks flexible adjustment capabilities for the pressing chamber in its structural design. When pressing silver contacts of different specifications or structures is required, it is often only possible to replace the entire set of molds. This process is not only complex, time-consuming, and labor-intensive, but also prone to reduced pressing accuracy due to mold installation errors, affecting product consistency and yield. Furthermore, frequent mold changes also result in poor equipment versatility and high operating costs. Summary of the Invention

[0004] To address the aforementioned issues, a combined pressing device for irregularly shaped silver contacts is provided. This device allows for flexible replacement or adjustment of the pressing chamber according to different contact structures, thereby solving the technical problems of existing pressing devices that cannot flexibly adjust the pressing chamber, are complex to operate, and have poor pressing accuracy.

[0005] To address the problems of existing technologies, this invention provides a combined pressing device for irregularly shaped silver contacts, comprising: a base frame; a first linear actuator, vertically fixed on the base frame, wherein the first linear actuator is provided with an adjusting frame capable of longitudinal sliding; a pressing module, rotatably mounted vertically on the adjusting frame, the pressing module having three sets of rotating frames nested sequentially from the outside in and multiple molding blocks respectively embedded in the three sets of rotating frames; when the molding blocks on each set of rotating frames are all rotated and adjusted to the pressing position, the multiple molding blocks overlap vertically to form a pressing cavity, the rotation angle of the three sets of rotating frames can be adjusted separately; and a feeding module, the feeding module being slidably mounted on the base frame and located directly below the pressing cavity, the feeding module having a pressing head capable of feeding the silver contact blank into the pressing cavity.

[0006] Preferably, the pressing module further includes a material ejection unit capable of ejecting the silver contact blank at the pressing position; the material ejection unit is fixedly mounted vertically on the adjusting frame with the ejection end facing the feeding module vertically.

[0007] Preferably, the ejector unit is provided with an ejector head that can be inserted longitudinally into the molding block and a second linear driver that can drive the ejector head to make longitudinal adjustments.

[0008] Preferably, the rotating frame is a ring-shaped body with radially formed grooves on its side walls; multiple sets of grooves are arranged circumferentially along the axis of the rotating frame, and each set of grooves contains a corresponding forming block.

[0009] Preferably, the molding block is an arc-shaped block with the same shape as the groove, and a through hole is formed in the molding block, which constitutes a molding cavity.

[0010] Preferably, the side wall of the rotating frame is further fixedly provided with limiting blocks, and multiple sets of limiting blocks are arranged circumferentially along the axial direction of the rotating frame; the multiple sets of limiting blocks are arranged one-to-one with the multiple sets of grooves.

[0011] Preferably, the first linear actuator includes a support frame, a first sliding frame, a connecting frame, and a second electric push rod; the support frame is vertically fixed on the base frame; the first sliding frame is slidably mounted vertically on the top of the support frame; the adjusting frame is fixedly mounted on one side of the first sliding frame; the second electric push rod is vertically fixed on one side of the support frame via the connecting frame, and the output shaft of the second electric push rod passes through the connecting frame and is fixedly connected to the first sliding frame.

[0012] Preferably, the feeding module further includes a second sliding frame, a guide frame, a lifting frame, and a third linear actuator; the second sliding frame is horizontally slidably disposed at the bottom of the base frame via the guide frame; the third linear actuator is vertically fixedly disposed at the bottom of the second sliding frame; the lifting frame is vertically fixedly disposed at the output end of the third linear actuator; the pressing head is vertically fixedly disposed on the lifting frame and coaxially disposed with the pressing cavity.

[0013] Preferably, the pressing head also has a through slot for placing the silver contact blank.

[0014] Preferably, the feeding module further includes an opening and closing unit capable of dynamically opening and closing the slot; the opening and closing unit is vertically arranged inside the lifting frame with its opening and closing end facing the pressing head.

[0015] The advantages of this invention compared to the prior art are: This invention features multiple rotating frames arranged in an adjustable ring structure, with each frame equipped with replaceable forming blocks. This allows for the creation of different pressing cavities by simple rotation adjustment and module replacement, based on varying silver contact pressing requirements. This significantly enhances the equipment's versatility and flexible processing capabilities. Furthermore, the integrated pressing module, feeding module, and unloading unit enable fully automated closed-loop control of silver contact pressing, feeding, and unloading. This effectively avoids defects caused by difficult demolding or residue during the pressing process, further improving pressing efficiency and product consistency. The overall structure is compact and highly modular, meeting the application needs for customized batch processing of irregularly shaped silver contacts in multiple specifications. Attached Figure Description

[0016] Figure 1 A three-dimensional combination pressing device for irregularly shaped silver contacts Figure 1 .

[0017] Figure 2 This is a front view of a combined pressing device for irregularly shaped silver contacts.

[0018] Figure 3 yes Figure 2 Sectional view at point AA.

[0019] Figure 4 yes Figure 3 A magnified view of section B.

[0020] Figure 5 A three-dimensional combination pressing device for irregularly shaped silver contacts Figure 2 .

[0021] Figure 6 yes Figure 5 A magnified view of a portion of point C.

[0022] Figure 7 This is a side view of a combined pressing device for irregularly shaped silver contacts.

[0023] Figure 8 yes Figure 7 Sectional view of the DD section.

[0024] Figure 9 This is an exploded perspective view of a combined pressing device for irregularly shaped silver contacts.

[0025] Figure 10 This is an exploded 3D view of the pressing module in a combined pressing device for irregularly shaped silver contacts.

[0026] The numbers on the map are: 1. Base frame; 2. First linear actuator; 21. Adjustment frame; 22. Support frame; 23. First sliding frame; 24. Connecting frame; 25. Second electric push rod; 3. Pressing module; 31. Rotating frame; 311. Groove; 312. Limiting block; 313. Pin; 32. Forming block; 321. Through hole; 33. Unloading unit; 331. Unloading head; 332. Second linear actuator; 4. Feeding module; 41. Pressing head; 411. Connecting plate; 412. Forming column; 413. Slot; 42. Second sliding frame; 43. Guide frame; 44. Lifting frame; 45. Third linear actuator; 46. Opening and closing unit; 461. Third electric push rod; 462. Closing rod. Detailed Implementation

[0027] 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.

[0028] See Figures 1 to 10 The diagram shows a combined pressing device for irregularly shaped silver contacts, comprising: a base frame 1; a first linear actuator 2, vertically fixed on the base frame 1, and the first linear actuator 2 having an adjusting frame 21 capable of longitudinal sliding; a pressing module 3, rotatably mounted vertically on the adjusting frame 21, the pressing module 3 having three sets of rotating frames 31 nested sequentially from the outside in and multiple molding blocks 32 respectively embedded in the three sets of rotating frames 31; when the molding blocks 32 on each set of rotating frames 31 are rotated and adjusted to the pressing position, the multiple molding blocks 32 overlap vertically to form a pressing cavity, and the rotation angle of the three sets of rotating frames 31 can be adjusted separately; and a feeding module 4, slidably mounted on the base frame 1 and located directly below the pressing cavity, the feeding module 4 having a pressing head 41 capable of feeding the silver contact blank into the pressing cavity.

[0029] The pressing position is a pressing cavity composed of multiple component blocks 32 located near the feeding module 4.

[0030] When it is necessary to press and form irregularly shaped silver contacts, the operator first adjusts the rotation angle of the three sets of rotating frames 31 according to the pressing requirements of different silver contact structures. This allows the forming components set on the three sets of rotating frames 31 to rotate synchronously and combine at the pressing position to form a pressing cavity that matches the shape of the silver contact. Then, the silver contact blank to be pressed is placed at the designated position of the feeding module 4. Next, the first linear actuator 2 is driven to move the pressing module 3 vertically downwards, and together with the feeding module 4, presses the silver contact blank into the formed pressing cavity, completing the high-precision pressing and forming operation of the silver contact. After the pressing and forming is completed, the first linear actuator 2 is activated again, causing the pressing module 3 to move vertically upwards and away from the feeding module 4. At this time, the formed silver contact can automatically detach from the pressing cavity under the action of gravity, realizing automatic unloading and completing one pressing cycle.

[0031] By setting multiple adjustable rotating frames 31, the pressing chamber can be flexibly switched and combined according to actual pressing needs, thereby adapting to silver contact blanks of different shapes, greatly improving the versatility and adaptability of the equipment; at the same time, the coordinated cooperation between the pressing module 3 and the feeding module 4 realizes automatic pressing and automatic demolding, simplifying the operation process and improving production efficiency and product consistency.

[0032] See Figure 8 As shown: The pressing module 3 also includes a material ejection unit 33 capable of ejecting the silver contact blank at the pressing position; the material ejection unit 33 is fixedly mounted vertically on the adjusting frame 21 with the ejection end vertically facing the feeding module 4.

[0033] After the silver contact blank is formed in the pressing cavity by the pressing module 3, to prevent the silver contact blank from sticking to or embedding inside the pressing cavity due to the high pressure during the pressing process, and thus being unable to be demolded smoothly by its own weight, an external power supply can be connected to drive the ejection unit 33 to operate. After the ejection unit 33 is started, its ejection end will extend vertically and insert into the forming block 32 set at the pressing position, pushing the formed silver contact from top to bottom, thereby smoothly pushing it out of the pressing cavity, realizing automatic unloading of the formed part, and avoiding jamming problems caused by manual intervention or silver contact adhesion.

[0034] By setting up the ejection unit 33, the active ejection function after the silver contact is formed is realized, which effectively solves the problem of difficulty in automatic demolding caused by excessive pressing force or mold cavity adhesion, improves the automation level and reliability of the silver contact pressing process, and ensures the consistency of molding efficiency and pressing quality.

[0035] See Figure 4 As shown: The ejection unit 33 is provided with an ejection head 331 that can be inserted longitudinally into the molding block 32 and a second linear driver 332 that can drive the ejection head 331 to perform longitudinal adjustment.

[0036] The ejector head 331 is coaxially and detachably mounted on the drive end of the second linear driver 332.

[0037] The second linear actuator 332 is preferably a first electric push rod structure, which is vertically fixed to the adjusting frame 21 via the connecting frame 24 to ensure stable longitudinal driving capability during operation. When it is necessary to unload the silver contacts that have been formed in the pressing position, an external power supply is first connected to drive the second linear actuator 332 to start. The output shaft of the actuator extends vertically and simultaneously drives the unloading head 331 fixedly connected to it to move downward. Under the action of its guiding structure, the unloading head 331 extends precisely into the interior of the forming block 32 in the vertical direction and pushes the silver contacts in the pressing cavity axially, thereby achieving efficient and smooth ejection of the formed silver contacts, ensuring that they smoothly leave the pressing cavity and complete the unloading process.

[0038] In the non-working state, the ejector head 331 is partially inserted into the molding block 32, thereby closing the top of the molding block 32 installed on the central rotating frame 31.

[0039] See Figure 10 As shown: The rotating frame 31 is a ring-shaped body with a radial groove 311 on its side wall; multiple sets of grooves 311 are arranged circumferentially along the axis of the rotating frame 31, and each set of grooves 311 has a corresponding forming block 32.

[0040] The outer wall of the rotating frame 31 has multiple sets of grooves 311 evenly spaced along its radial direction for convenient installation and positioning of multiple molding blocks 32. Each molding block 32 corresponds to a pressing position at a specific angle. By installing molding blocks 32 in each groove 311, the rotating frame 31 has a functional module for pressing and shaping silver contact blanks at each angle. Operators can rotate the rotating frame 31 to adjust the target molding block 32 to the pressing position according to the pressing requirements of different silver contacts, thereby flexibly forming the corresponding pressing cavity and realizing rapid switching and multi-specification adaptation of the pressing module 3.

[0041] See Figure 10 As shown: The molding block 32 is an arc-shaped block with the same shape as the groove 311, and a through hole 321 is provided through the molding block 32, which constitutes the molding cavity.

[0042] The arc-shaped block is detachably installed in the groove 311 on the outer wall of the rotating frame 31, and its structure precisely matches the groove 311, ensuring its positioning stability and coaxial fit accuracy in the installed state. Each arc-shaped block has a through hole 321 extending through it along its axial direction. The cross-sectional shape and size of the through hole 321 can be customized according to the molding requirements of different irregular silver contacts, thereby giving the arc-shaped block a variety of molding functions.

[0043] By replacing the arc-shaped blocks with different through-hole 321 structures, the pressing cavity type can be quickly switched and flexibly combined to meet the pressing requirements of irregular silver contacts under different process parameters, avoiding the problems of complicated equipment disassembly and assembly and increased downtime caused by replacing the entire pressing module 3.

[0044] By designing the arc-shaped block as a detachable structure and setting through holes 321 inside it that can be customized as needed, the pressing equipment can quickly adapt to the forming requirements of silver contacts of different shapes and sizes, realize the modularization and easy replacement of the pressing chamber, and significantly improve the processing adaptability, production efficiency and maintenance convenience of the equipment.

[0045] See Figure 10 As shown: The side wall of the rotating frame 31 is also fixedly provided with a limiting block 312, and multiple sets of the limiting block 312 are arranged circumferentially along the axial direction of the rotating frame 31; the multiple sets of limiting blocks 312 are arranged in a one-to-one correspondence with multiple sets of grooves 311.

[0046] After multiple sets of rotating frames 31 are adjusted to the desired pressing chamber configuration, to prevent displacement or loosening of the rotating frames 31 during the pressing process, locking and limiting are required between each rotating frame 31. At this time, the operator only needs to insert the matching pins 313 into the limiting blocks 312 set on the side walls of each rotating frame 31. The pins 313 laterally penetrate and fix each rotating frame 31, so that the multiple rotating frames 31 that are spliced ​​together to form the pressing chamber can stably maintain the locked state under the pressing state, ensuring the coaxial alignment and pressing accuracy of the entire pressing process.

[0047] By equidistantly setting multiple sets of grooves 311 for mounting the molding block 32 on the rotating frame 31, and combining them with the linkage locking structure formed by the pin 313 and the limiting block 312, not only can flexible and rapid switching between various pressing chamber forms be realized, but also the structural stability during the pressing process is ensured. This effectively improves the equipment's adaptability, ease of operation, and pressing consistency in multi-specification pressing scenarios for irregular silver contacts.

[0048] See Figure 6As shown: The first linear actuator 2 includes a support frame 22, a first sliding frame 23, a connecting frame 24, and a second electric push rod 25; the support frame 22 is vertically fixed on the base frame 1; the first sliding frame 23 is vertically slidably disposed on the top of the support frame 22; the adjusting frame 21 is fixedly disposed on one side of the first sliding frame 23; the second electric push rod 25 is vertically fixed on one side of the support frame 22 through the connecting frame 24, and the output shaft of the second electric push rod 25 passes through the connecting frame 24 and is fixedly connected to the first sliding frame 23.

[0049] When it is necessary to drive the pressing module 3 to move vertically downwards to press the silver contact blank, an external power supply is first connected to drive the second electric push rod 25 to start. In operation, the output shaft of the second electric push rod 25 extends axially and, through a connecting structure, synchronously drives the first sliding frame 23, mounted on the support frame 22, to slide precisely vertically. During the movement of the first sliding frame 23, it causes the pressing module 3, which is fixedly mounted on its side, to move longitudinally, causing the pressing module 3 to press down on the silver contact blank located on the feeding module 4.

[0050] See Figure 8 and Figure 9 As shown: The feeding module 4 also includes a second sliding frame 42, a guide frame 43, a lifting frame 44, and a third linear actuator 45; the second sliding frame 42 is slidably mounted horizontally on the bottom of the base frame 1 via the guide frame 43; the third linear actuator 45 is fixedly mounted vertically on the bottom of the second sliding frame 42; the lifting frame 44 is fixedly mounted vertically on the output end of the third linear actuator 45; the pressing head 41 is fixedly mounted vertically on the lifting frame 44 and is coaxially arranged with the pressing chamber.

[0051] When feeding the silver contact blank, the operator simply places the pre-prepared blank precisely on the bearing end face of the pressing head 41. Then, by connecting an external power source, the third linear actuator 45 is started. In operation, the output shaft of the third linear actuator 45 extends vertically and simultaneously drives the connected lifting frame 44 to rise longitudinally. As the lifting frame 44 rises, it drives the pressing head 41 to move upwards synchronously, inserting it from bottom to top into the pressing cavity, which has been adjusted to the pressing position. The silver contact blank, pushed by the pressing head 41, precisely enters the pressing cavity and is shaped and positioned by the inner wall of the cavity, ultimately completing the pressing and forming process of the silver contact blank.

[0052] See Figure 4 As shown: The pressing head 41 is also provided with a slot 413 through which the silver contact blank can be placed.

[0053] The pressing head 41 consists of a connecting plate 411 and a forming column 412 vertically arranged on the connecting plate 411. The top of the forming column 412 is also provided with an extrusion cavity. The slot 413 is used to limit the placement of the silver contact blank, so that the silver contact blank can be placed in the slot 413 in the correct posture.

[0054] The pressing head 41 is detachably mounted on the top of the lifting frame 44, employing a standard interface connection structure. This allows for easy replacement of the pressing head 41 with appropriate specifications or contour structures according to the pressing and forming requirements of different silver contacts, thus adapting to diverse product manufacturing needs. During operation, when the third linear actuator 45 starts and drives the lifting frame 44 to rise vertically, the pressing head 41 moves upward synchronously with the lifting frame 44 and gradually approaches the pre-set pressing cavity. At this time, the forming column 412 at the lower end of the pressing head 41 inserts into the pre-set pressing cavity from bottom to top, forming a closed forming cavity together with the surface structure of the pressing cavity. In this cavity, the silver contact blank is pressed into a predetermined shape by longitudinal thrust, realizing the integrated execution of feeding and preliminary forming operations.

[0055] See Figure 4 and Figure 8 As shown: The feeding module 4 also includes an opening and closing unit 46 that can dynamically open and close the slot 413; the opening and closing unit 46 is vertically arranged inside the lifting frame 44 and the opening and closing end is directly opposite the pressing head 41.

[0056] The opening and closing unit 46 includes a third electric push rod 461 and a closing rod 462 coaxially fixed to the output end of the third electric push rod 461. The closing rod 462 has a clearance fit structure with the slot 413 to ensure smooth insertion and removal and sealing effect during the opening and closing process. In the non-pressing working state, to facilitate the feeding of silver contact blanks, simply drive the third electric push rod 461 to retract its output shaft. Under the action of retraction, the closing rod 462 gradually withdraws from the slot 413 axially, thereby exposing the slot 413. At this time, the operator can accurately place the prepared silver contact blank into the slot 413. When the blank is placed and ready to enter the pressing process, drive the third linear actuator 45 to push the blank into the pressing chamber. At the same time, drive the third electric push rod 461 to push the closing rod 462 into the slot 413, realizing further pushing of the silver contact blank and rapid closing of the slot 413, effectively preventing blank rebound or position displacement.

[0057] This invention not only allows for flexible adjustment of different pressing chambers according to pressing requirements, but also provides fast pressing efficiency and high precision.

[0058] 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 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 protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A combined pressing device for irregularly shaped silver contacts, characterized in that, include: Base frame; The first linear actuator is vertically fixed on the base frame, and the first linear actuator is provided with an adjustment frame that can slide longitudinally; The pressing module is vertically rotatably mounted on the adjusting frame. The pressing module has three sets of rotating frames nested from the outside in and multiple molding blocks embedded in the three sets of rotating frames. When the molding blocks on each set of rotating frames are rotated and adjusted to the pressing position, the multiple molding blocks overlap vertically to form a pressing cavity. The rotation angle of the three sets of rotating frames can be adjusted separately. The feeding module is slidably disposed on the base frame and located directly below the pressing chamber. The feeding module is equipped with a pressing head that can push the silver contact blank into the pressing chamber.

2. The combined pressing device for irregularly shaped silver contacts according to claim 1, characterized in that, The pressing module also includes a material ejection unit capable of ejecting the silver contact blank at the pressing position; The unloading unit is fixedly mounted vertically on the adjusting frame with the unloading end facing the feeding module vertically.

3. The combined pressing device for irregularly shaped silver contacts according to claim 2, characterized in that, The ejection unit is equipped with an ejection head that can be inserted longitudinally into the molding block and a second linear driver that can drive the ejection head to make longitudinal adjustments.

4. The combined pressing device for irregularly shaped silver contacts according to claim 1, characterized in that, The rotating frame is a ring-shaped body with radially opened grooves on its side walls; The grooves are arranged in multiple sets along the circumferential direction of the axis of the rotating frame, and each set of grooves is provided with a corresponding molding block.

5. A combined pressing device for irregularly shaped silver contacts according to claim 4, characterized in that, The molding block is an arc-shaped block with the same shape as the groove, and a through hole is formed inside the molding block, which constitutes the molding cavity.

6. A combined pressing device for irregularly shaped silver contacts according to claim 4, characterized in that, The side wall of the rotating frame is also fixedly provided with limiting blocks, and multiple sets of limiting blocks are arranged circumferentially along the axial direction of the rotating frame; the multiple sets of limiting blocks are arranged one-to-one with the multiple sets of grooves.

7. A combined pressing device for irregularly shaped silver contacts according to claim 1, characterized in that, The first linear actuator includes a support frame, a first sliding frame, a connecting frame, and a second electric push rod; The support frame is vertically fixed on the base frame; The first sliding frame is vertically mounted on the top of the support frame; The adjustment frame is fixedly mounted on one side of the first sliding frame; The second electric push rod is fixedly mounted vertically on one side of the support frame via a connecting bracket, and the output shaft of the second electric push rod passes through the connecting bracket and is fixedly connected to the first sliding frame.

8. A combined pressing device for irregularly shaped silver contacts according to claim 1, characterized in that, The feeding module also includes a second sliding frame, a guide frame, a lifting frame, and a third linear drive; The second sliding frame is slidably mounted horizontally at the bottom of the base frame via the guide frame; The third linear actuator is fixedly mounted vertically at the bottom of the second sliding frame; The lifting frame is fixedly mounted vertically at the output end of the third linear actuator; The pressing head is vertically fixed on the lifting frame and is coaxial with the pressing cavity.

9. A combined pressing device for irregularly shaped silver contacts according to claim 8, characterized in that, The pressing head also has a through-hole for placing the silver contact blank.

10. A combined pressing device for irregularly shaped silver contacts according to claim 9, characterized in that, The feeding module also includes an opening and closing unit capable of dynamically opening and closing the slot; the opening and closing unit is vertically arranged inside the lifting frame with its opening and closing end facing the pressing head.

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