Combined pressing equipment for special-shaped silver contact

Abstract

The invention relates to the technical field of silver contacts, in particular to combined pressing equipment for special-shaped silver contacts. Comprising a base frame; the first linear driver is vertically and fixedly arranged on the base frame, and the first linear driver is provided with an adjusting frame capable of longitudinally sliding; the pressing module is rotationally arranged on the adjusting frame in a vertical state, and the pressing module is provided with three sets of rotating frames capable of coaxially rotating and forming blocks installed in the three sets of rotating frames in an embedded mode; when the multiple sets of forming blocks are rotationally adjusted to the pressing positions, pressing cavities are formed among the multiple sets of forming blocks. The feeding module is arranged on the base frame in a sliding mode and located under the pressing cavity, and the feeding module is provided with a pressing head capable of pushing the silver contact blank into the pressing cavity; different pressing cavities can be flexibly adjusted according to pressing requirements, the pressing efficiency is high, and the precision is high.

Description

Technical Field

[0001] The present invention relates to the technical field of silver contacts, in particular to a combined pressing device for special-shaped silver contacts. Background Art

[0002] In the manufacturing process of low-voltage electrical appliances, relays, contactors, and other devices, silver contacts are widely used as key conductive components for circuit on / off control. The quality of their pressing and forming directly affects the performance and service life of the entire device. Traditional pressing equipment, which mostly uses fixed mold structures, is particularly difficult to adapt to the molding needs of various contact structures due to their diverse geometric structures and sizes.

[0003] Existing pressing equipment often lacks the structural design capability to flexibly adjust the pressing chamber. When silver contacts of varying specifications or structures need to be pressed, the entire mold set often has to be replaced. This process is not only complex, time-consuming, and labor-intensive, but mold installation errors can also lead to reduced pressing accuracy, impacting product consistency and yield. Furthermore, frequent mold changes result in poor equipment versatility and high operating costs. Summary of the Invention

[0004] In response to the above problems, a combined pressing device for special-shaped silver contacts is provided. By proposing a combined pressing device that can flexibly replace or adjust the pressing cavity according to different contact structures, the technical problems that the existing pressing equipment cannot flexibly adjust the pressing cavity, is complicated to operate, and has poor pressing accuracy are solved.

[0005] In order to solve the problems of the prior art, the present invention provides a combined pressing equipment for special-shaped silver contacts, comprising: a base frame; a first linear drive, vertically fixedly arranged on the base frame, and the first linear drive is provided with an adjustment frame capable of longitudinal sliding; a pressing module, rotatably arranged on the adjustment frame in a vertical state, the pressing module is provided with three groups of rotating frames capable of coaxial rotation and forming blocks embedded in the three groups of rotating frames; when multiple groups of forming blocks are rotated and adjusted to the pressing position, a pressing cavity is formed between the multiple groups of forming blocks; a feeding module, the feeding module is slidably arranged on the base frame and is located directly below the pressing cavity, and the feeding module is provided with a pressing head capable of pushing the silver contact blank into the pressing cavity.

[0006] Preferably, the pressing module further comprises a material withdrawing unit capable of withdrawing the silver contact blank at the pressing position; the material withdrawing unit is fixedly arranged on the adjusting frame in a vertical state and the material withdrawing end is vertically facing the feeding module.

[0007] Preferably, the material stripping unit is provided with a material stripping head capable of being longitudinally inserted into the forming block and a second linear drive capable of driving the material stripping head to perform longitudinal adjustment.

[0008] Preferably, the rotating frame is a ring body arranged in a circular shape and has radial grooves on its side walls; the grooves are arranged in multiple groups along the circumference of the axis of the rotating ring, and forming blocks are arranged in each of the multiple groups of grooves in a one-to-one correspondence.

[0009] Preferably, the forming block is an arc-shaped block having the same shape as the groove, and a through hole is provided through the forming block, and the through hole constitutes a forming cavity.

[0010] Preferably, the side wall of the rotating frame is further fixedly provided with a limit block, and the limit block is provided in multiple groups along the axial circumference of the rotating frame; the multiple groups of limit blocks are provided in a one-to-one correspondence with the multiple groups of grooves.

[0011] Preferably, the first linear drive 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 slidably set on the top of the support frame; the adjustment frame is fixed on one side of the first sliding frame; the second electric push rod is vertically fixed on one side of the support frame through 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 also includes a second sliding frame, a guide frame, a lifting frame and a third linear drive; the second sliding frame is horizontally slidably arranged at the bottom of the base frame through the guide frame; the third linear drive is vertically fixedly arranged at the bottom of the second sliding frame; the lifting frame is vertically fixedly arranged at the output end of the third linear drive; the pressing head is vertically fixed on the lifting frame and is coaxially arranged with the pressing chamber.

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

[0014] Preferably, the feeding module further comprises an opening and closing unit capable of dynamically opening and closing the slot; the opening and closing unit is vertically arranged in the lifting frame and the opening and closing end is arranged opposite to the pressing head.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention arranges multiple groups of rotating racks in an adjustable ring structure, and each group of rotating racks is provided with replaceable forming blocks. Different pressing cavities can be formed according to the pressing requirements of different silver contacts through simple rotation adjustment and module replacement, which significantly improves the versatility and flexible processing capabilities of the equipment; in addition, the co-arranged pressing module, feeding module and return unit can realize fully automatic closed-loop control of silver contact pressing, forming, feeding and return, effectively avoiding the problem of finished product defects caused by difficult demolding or residue of silver contacts during the pressing process, further improving the pressing efficiency and finished product consistency; the overall structure is compact and highly modularized, which can meet the application requirements of batch customized processing of multi-specifications of special-shaped silver contacts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional combined pressing device for special-shaped silver contacts. Figure 1 .

[0017] Figure 2 It is a front view of a combined pressing device for special-shaped silver contacts.

[0018] Figure 3 yes Figure 2 Cross-sectional view at AA.

[0019] Figure 4 yes Figure 3 A partial enlarged view of point B.

[0020] Figure 5 It is a three-dimensional combined pressing device for special-shaped silver contacts. Figure 2 .

[0021] Figure 6 yes Figure 5 A partial enlarged view of point C.

[0022] Figure 7 It is a side view of a modular pressing device for special-shaped silver contacts.

[0023] Figure 8 yes Figure 7 Cross-sectional view at DD.

[0024] Figure 9 An exploded perspective view of a modular pressing device for special-shaped silver contacts.

[0025] Figure 10 The present invention is a partially exploded perspective view of the pressing module structure in a combined pressing device for special-shaped silver contacts.

[0026] The numbers in the figure 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. Limit block; 313. Pin; 32. Forming block; 321. Through hole; 33. Material removal unit; 331. Material removal head; 332. Second linear drive; 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 drive; 46. Opening and closing unit; 461. Third electric push rod; 462. Closing rod. DETAILED DESCRIPTION

[0027] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] See also Figures 1 to 10 As shown: A combined pressing equipment for special-shaped silver contacts, comprising: a base frame 1; a first linear drive 2, vertically fixedly arranged on the base frame 1, and the first linear drive 2 is provided with an adjustment frame 21 capable of longitudinal sliding; a pressing module 3, rotatably arranged on the adjustment frame 21 in a vertical state, the pressing module 3 is provided with three groups of rotating frames 31 capable of coaxial rotation and forming blocks 32 embedded in the three groups of rotating frames 31; when multiple groups of forming blocks 32 are rotated and adjusted to the pressing position, a pressing cavity is formed between the multiple groups of forming blocks 32; a feeding module 4, the feeding module 4 is slidably arranged on the base frame 1 and is located directly below the pressing cavity, and the feeding module 4 is provided with a pressing head 41 capable of pushing the silver contact blank into the pressing cavity.

[0029] The pressing position is a pressing cavity formed by multiple groups of forming blocks 32 near the feeding module 4.

[0030] When it is necessary to press-form a special-shaped silver contact, the operator first adjusts the rotation angles of the three rotating frames 31, depending on the pressing requirements of the different silver contact structures, so that the forming components installed on the three rotating frames 31 rotate synchronously and combine at the pressing position to form a pressing cavity that matches the shape of the silver contact. Subsequently, the silver contact blank to be pressed is placed at the designated position of the feeding module 4. The first linear drive 2 is then driven to move the pressing module 3 downward in the vertical direction. It then cooperates with the feeding module 4 to press the silver contact blank into the formed pressing cavity, completing the high-precision press-forming operation of the silver contact. After the press-forming operation is completed, the first linear drive 2 is activated again, causing the pressing module 3 to move vertically upward and away from the feeding module 4. At this time, the formed silver contact can automatically exit the pressing cavity under the action of gravity, achieving automatic unloading and completing a press cycle.

[0031] By setting up multiple sets of adjustable rotating frames 31, the pressing chamber can be flexibly switched and combined according to actual pressing needs, so as to adapt to silver contact blanks of different shapes, greatly improving the versatility and adaptability of the equipment; at the same time, automatic pressing and automatic demoulding are achieved through the coordinated cooperation of the pressing module 3 and the feeding module 4, simplifying the operation process and improving production efficiency and product consistency.

[0032] See also Figure 8 As shown, the pressing module 3 also includes a material stripping unit 33 capable of stripping the silver contact blank at the pressing position; the material stripping unit 33 is fixedly arranged on the adjustment frame 21 in a vertical state, and the material stripping end is vertically facing the feeding module 4.

[0033] After the silver contact blank is formed in the pressing cavity by the pressing module 3, an external power source can be connected to drive the material removal unit 33 to prevent the silver contact blank from clinging to or embedding in the pressing cavity due to the high pressure during the pressing process, making it impossible to smoothly release the mold by its own weight. After the material removal unit 33 is activated, its material removal end will extend vertically and insert into the interior of the forming block 32 set at the pressing position, pushing the formed silver contact from top to bottom, thereby smoothly ejecting it from the pressing cavity, realizing automatic material removal of the formed part and avoiding the problem of sticking caused by manual intervention or silver contact adhesion.

[0034] By setting up the material withdrawal unit 33, the active withdrawal function of the silver contact after molding is realized, which effectively solves the problem of automatic demoulding difficulties 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 also Figure 4 As shown, the stripping unit 33 is provided with a stripping head 331 capable of longitudinally inserting into the forming block 32 and a second linear drive 332 capable of driving the stripping head 331 to perform longitudinal adjustment.

[0036] The stripping head 331 is coaxially and detachably disposed on the driving end of the second linear actuator 332 .

[0037] The second linear drive 332 is preferably a first electric push rod structure, and the entire structure is fixedly mounted in a vertical position on the adjustment frame 21 via the connecting frame 24 to ensure that it has stable longitudinal driving capabilities during operation. When it is necessary to perform a material removal operation on the silver contacts that have been formed and are located in the pressing position, an external power supply is first connected to drive the second linear drive 332 to start. The output shaft of the drive extends in the vertical direction and simultaneously drives the material removal head 331 fixedly connected to it to move downward. Under the action of its guide structure, the material removal head 331 accurately extends into the interior of the forming block 32 in the vertical direction and axially pushes the silver contacts in the pressing cavity, thereby achieving efficient and smooth removal of the formed silver contacts, ensuring that they are smoothly removed from the pressing cavity and complete the material removal process.

[0038] In the non-working state, the stripping head 331 is half-inserted into the forming block 32 , thereby sealing the top of the forming block 32 installed on the central rotating frame 31 .

[0039] See also Figure 10 As shown, the rotating frame 31 is a ring body arranged in a circular shape and a groove 311 is radially opened on the side wall; the groove 311 is arranged in multiple groups along the circumferential direction of the axis of the rotating ring, and the multiple groups of grooves 311 are each provided with a forming block 32 in a one-to-one correspondence.

[0040] The outer wall of the rotating frame 31 is equidistantly radially defined with multiple sets of grooves 311 for convenient installation and positioning of multiple forming blocks 32. Each forming block 32 corresponds to a specific pressing position at a specific angle. By installing a forming block 32 within each groove 311, the rotating frame 31 provides a functional module for pressing and shaping the silver contact blank at each angle. By rotating the rotating frame 31, staff can adjust the desired forming block 32 to the pressing position according to the pressing requirements of different silver contacts, thereby flexibly forming the corresponding pressing chamber and enabling rapid switching of the pressing module 3 and adapting to multiple specifications.

[0041] See also Figure 10 As shown, the forming block 32 is an arc-shaped block with the same shape as the groove 311, and a through hole 321 is opened through the forming block 32, and the through hole 321 constitutes a forming cavity.

[0042] The arc blocks are removably mounted within grooves 311 on the outer wall of the rotating frame 31, and their precise structural fit ensures stable positioning and coaxial fit when installed. Each arc block is axially penetrated by a through-hole 321. The cross-sectional shape and size of these through-holes 321 can be customized to meet the molding requirements of various special-shaped silver contacts, thus endowing the arc blocks with diverse molding capabilities.

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

[0044] By designing the arc block as a detachable structure and providing a through hole 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 convenient replacement of the pressing cavity, and significantly improve the processing adaptability, production efficiency and maintenance convenience of the equipment.

[0045] See also Figure 10 As shown, the side wall of the rotating frame 31 is further fixedly provided with a limit block 312 , and the limit block 312 is provided in multiple groups along the axial circumference of the rotating frame 31 ; the multiple groups of limit blocks 312 are provided in a one-to-one correspondence with the multiple groups of grooves 311 .

[0046] After the multiple sets of turrets 31 are adjusted to the desired pressing chamber configuration, to prevent displacement or loosening of the turrets 31 during the pressing process, it is necessary to lock and limit the positions of the turrets 31. At this point, the operator simply inserts the matching pins 313 into the limit blocks 312 provided on the side walls of each turret 31. The pins 313 then penetrate and secure each turret 31 laterally, allowing the multiple turrets 31 assembled to form the pressing chamber to remain stably locked during the pressing process, ensuring coaxial alignment and pressing accuracy throughout the entire pressing process.

[0047] By equidistantly arranging multiple groups of grooves 311 for installing the forming blocks 32 on the rotating frame 31, and combining the interlocking locking structure composed of the pin shaft 313 and the limit block 312, not only flexible and fast switching between various pressing cavity forms is achieved, but also the structural stability during the pressing process is ensured, effectively improving the adaptability, operation convenience and pressing consistency of the equipment in the multi-specification pressing scenarios of special-shaped silver contacts.

[0048] See also Figure 6As shown: the first linear drive 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 set on the top of the support frame 22; the adjustment frame 21 is fixedly set 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 the pressing module 3 needs to be moved vertically downward to press the silver contact blank, an external power source is first connected to activate the second electric push rod 25. In operation, the output shaft of the second electric push rod 25 extends axially, and through a connecting structure, it simultaneously drives the first sliding frame 23 mounted on the support frame 22 to precisely slide vertically. As the first sliding frame 23 moves, it also causes the pressing module 3, fixed to its side, to undergo simultaneous longitudinal displacement, forcing the pressing module 3 to press downward against the silver contact blank on the feed module 4.

[0050] See also 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 drive 45; the second sliding frame 42 is horizontally slidably arranged at the bottom of the base frame 1 through the guide frame 43; the third linear drive 45 is vertically fixedly arranged at the bottom of the second sliding frame 42; the lifting frame 44 is vertically fixedly arranged at the output end of the third linear drive 45; the pressing head 41 is vertically fixedly arranged on the lifting frame 44 and is coaxially arranged with the pressing chamber.

[0051] When the silver contact blank needs to be fed, the staff only needs to accurately place the pre-prepared silver contact blank to be pressed on the bearing end surface of the pressing head 41. Subsequently, the third linear drive 45 is started by connecting to an external power supply. When the third linear drive 45 is in working state, its output shaft extends in the vertical direction and synchronously drives the lifting frame 44 connected thereto to produce a longitudinal upward movement. During the rising process of the lifting frame 44, the pressing head 41 is driven to move upward synchronously, so that the pressing head 41 is inserted from the bottom to the top into the pressing cavity that has been adjusted to the pressing position. The silver contact blank is pushed into the pressing cavity accurately by the pressing head 41, and is limited and shaped with the help of the inner wall of the pressing cavity, finally completing the pressing and forming process of the silver contact blank.

[0052] See also Figure 4 As shown, a slot 413 is formed in the pressing head 41 for placing the silver contact blank.

[0053] The pressing head 41 is composed 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 and adopts a standard interface connection structure, which makes it easy to replace the pressing head 41 of corresponding specifications or contour structures according to the pressing and forming requirements of different silver contacts, so as to adapt to the manufacturing of diversified products. During operation, when the third linear drive 45 starts and drives the lifting frame 44 to rise in the vertical direction, the pressing head 41 moves up synchronously with the lifting frame 44 and gradually approaches the set pressing cavity. At this time, the forming column 412 set at the lower end of the pressing head 41 will be inserted from bottom to top into the preset pressing cavity, and together with the surface structure of the pressing cavity, it forms a closed forming cavity. In this cavity, the silver contact blank is driven by the longitudinal thrust to be pressed into a predetermined shape, realizing the integrated execution of feeding and preliminary forming operations.

[0055] See also Figure 4 and Figure 8 As shown, the feeding module 4 further includes an opening and closing unit 46 capable of dynamically opening and closing the slot 413 ; the opening and closing unit 46 is vertically arranged in the lifting frame 44 and the opening and closing end is arranged opposite to the pressing head 41 .

[0056] The opening and closing unit 46 comprises 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 forms a clearance fit within the slot 413, ensuring smooth insertion and removal and a sealed seal during the opening and closing process. In the non-pressing state, to facilitate the placement of the silver contact blank, the third electric push rod 461 is simply actuated to retract its output shaft. This retraction causes the closing rod 462 to gradually withdraw axially from the slot 413, exposing the slot 413 and allowing the operator to accurately place the prepared silver contact blank within it. When the blank is placed and ready to begin the pressing process, the third linear actuator 45 is actuated to push the blank into the pressing chamber. Simultaneously, the third electric push rod 461 is actuated to simultaneously push the closing rod 462 into the slot 413, further pushing the silver contact blank and quickly sealing the slot 413, effectively preventing the blank from rebounding or shifting.

[0057] The present invention can not only flexibly adjust different pressing chambers according to pressing requirements but also has high pressing efficiency and precision.

[0058] The above embodiments merely represent one or more embodiments 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 a person skilled in the art may make various modifications and improvements without departing from the scope of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A combined pressing device for special-shaped silver contacts, characterized in that: include: scaffolding; a first linear drive, vertically fixed on the base frame, and provided with an adjustment frame capable of longitudinal sliding; The pressing module is vertically rotatably mounted on the adjustment frame, and comprises three sets of coaxially rotatable rotating frames and forming blocks embedded in the three sets of rotating frames; when the multiple sets of forming blocks are all rotated and adjusted to the pressing position, a pressing cavity is formed between the multiple sets of forming blocks; A feeding module is slidably arranged on the base frame and is located directly below the pressing cavity. The feeding module is provided with a pressing head capable of pushing the silver contact blank into the pressing cavity.

2. A combined pressing device for special-shaped silver contacts according to claim 1, characterized in that: The pressing module also includes a material stripping unit capable of stripping the silver contact blank at the pressing position; The material return unit is fixedly arranged on the adjustment frame in a vertical state, and the material return end is vertically directed toward the feeding module.

3. The combined pressing device for special-shaped silver contacts according to claim 2, characterized in that: The material stripping unit is provided with a material stripping head capable of longitudinally inserting into the forming block and a second linear drive capable of driving the material stripping head to perform longitudinal adjustment.

4. The combined pressing device for special-shaped silver contacts according to claim 1, characterized in that: The rotating frame is a ring body arranged in a circular shape and a groove is radially opened on the side wall; The grooves are arranged in a plurality of groups along the circumferential direction of the axis of the rotating ring, and forming blocks are arranged in the plurality of groups of grooves in a one-to-one correspondence.

5. The combined pressing device for special-shaped silver contacts according to claim 4, characterized in that: The forming block is an arc-shaped block with the same shape as the groove, and a through hole is opened through the forming block, and the through hole constitutes a forming cavity.

6. The combined pressing device for special-shaped silver contacts according to claim 4, characterized in that: The side wall of the rotating frame is further fixedly provided with a limit block, and the limit block is provided in multiple groups along the axial circumference of the rotating frame; the multiple groups of limit blocks are provided in a one-to-one correspondence with the multiple groups of grooves.

7. The combined pressing device for special-shaped silver contacts according to claim 1, characterized in that: The first linear drive 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 arranged on the top of the supporting frame in a vertical state; The adjustment frame is fixedly arranged on one side of the first sliding frame; The second electric push rod is fixedly arranged on one side of the support frame in a vertical state through a 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.

8. The combined pressing device for special-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 arranged on the bottom of the base frame in a horizontal state through the guide frame; The third linear actuator is fixedly arranged at the bottom of the second sliding frame in a vertical state; The lifting frame is fixedly arranged at the output end of the third linear actuator in a vertical state; The pressing head is vertically fixed on the lifting frame and is coaxially arranged with the pressing chamber.

9. The combined pressing device for special-shaped silver contacts according to claim 8, characterized in that: The pressing head is also provided with a slot hole through which the silver contact blank can be placed.

10. The combined pressing device for special-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 in the lifting frame and the opening and closing end is arranged opposite to the pressing head.

Images