A ceramic capacitor dry pressing device

Abstract

The application relates to the technical field of ceramic capacitor processing, in particular to a dry pressing device for ceramic capacitors, which comprises a workbench, a mounting frame, an upper punch die assembly, a translation mechanism, a support frame, a female die and a lower punch die assembly. The female die and the lower punch die assembly are jointly arranged on the movable support frame to form a module which can be integrally translated. During operation, the translation mechanism drives the module to move to the outside of the workbench. Since the output end of the lower punch die assembly has been previously inserted into the through hole of the female die to form a female die cavity, workers can safely and conveniently fill the powder into the female die cavity in the open space. After the pressing is completed, the translation mechanism moves the module out again, the output end of the lower punch die assembly rises to eject the blank, and the blank is convenient to take. The technical scheme solves the problems of limited feeding and taking operation space and low efficiency caused by the fixed female die.

Description

Technical Field

[0001] This invention relates to the field of ceramic capacitor processing technology, and in particular to a ceramic capacitor dry pressing device. Background Technology

[0002] A ceramic capacitor is a type of capacitor that uses ceramic dielectric as its dielectric. Its manufacturing process involves dry-pressing ceramic powder into disc-shaped or block-shaped blanks with specific shapes, sizes, and densities. This dry-pressing process directly determines the density uniformity, dimensional accuracy, and subsequent sintering quality of the capacitor blank, making it a crucial step in the production of high-performance ceramic capacitors.

[0003] Currently, existing dry-pressing devices for ceramic capacitors typically employ cam-driven or hydraulically driven press structures. Their basic components include a frame, an upper punch, a lower punch, and a die. During operation, ceramic dry powder is filled into the die cavity. The upper punch moves downwards under the action of the drive mechanism, working together with the fixed lower punch to apply high pressure to the powder within the cavity. This causes the powder particles to rearrange and tightly bind, thus forming a preform of the desired shape. Subsequently, the upper punch retracts, and the lower punch rises to complete demolding.

[0004] However, in actual use, the existing ceramic capacitor dry pressing device is inconvenient for operators to feed and remove materials from the cavity of the die because the die is fixed in the middle of the frame and in the narrow space between the upper and lower punches. Summary of the Invention

[0005] The purpose of this invention is to provide a ceramic capacitor dry pressing device, which aims to solve the problem that in the actual use of existing ceramic capacitor dry pressing devices, the female mold is fixedly set in the middle of the frame and in the narrow space between the upper punch and the lower punch, which makes it inconvenient for operators to complete the feeding and unloading of materials in the female mold cavity.

[0006] To achieve the above objectives, the present invention provides a ceramic capacitor dry-pressing device, comprising a worktable, a mounting frame, an upper die assembly, a translation mechanism, a support frame, a female die, and a lower die assembly. The mounting frame is mounted on the top of the worktable, and the upper die assembly is mounted on the top of the mounting frame. The translation mechanism is also provided on the upper surface of the worktable. One end of the translation mechanism is located below the upper die assembly, and the other end of the translation mechanism extends to the outside of the worktable. The support frame is provided at the output end of the translation mechanism. The female die is provided at the top of the support frame, and the lower die assembly is also provided on the support frame. The female die has a through hole. The output end of the upper die assembly is located above the through hole, and the lower die assembly is located below the through hole. The output end of the lower die assembly extends into the interior of the through hole, such that the upper surface of the output end of the lower die assembly and the port of the through hole form a female die cavity.

[0007] The upper punch assembly includes a first hydraulic cylinder, a stamping plate, and multiple upper punches. The lower punch assembly includes a second hydraulic cylinder, a lifting plate, and multiple lower punches. The first hydraulic cylinder is mounted on the crossbeam at the top of the mounting frame. The stamping plate is located at the output end of the first hydraulic cylinder. Multiple upper punches are located at the bottom of the stamping plate. The second hydraulic cylinder is mounted on the inner bottom of the support frame. The lifting plate is located at the output end of the second hydraulic cylinder. Multiple lower punches are located on the upper surface of the lifting plate. The female die has multiple through holes. Each through hole has an upper punch above it and a lower punch below it.

[0008] The translation mechanism includes a translation guide rail, a sliding seat, and a drive assembly. The translation guide rail is installed on the upper surface of the worktable, and the sliding seat is slidably disposed on the translation guide rail. The support frame is disposed on the upper surface of the sliding seat. The drive assembly is also installed on the translation guide rail, and the output end of the drive assembly is connected to the sliding seat.

[0009] The drive assembly includes a servo motor, a threaded rod, and a ball screw nut assembly. The servo motor is mounted on the outside of one end of the translation guide rail. The output end of the servo motor is provided with the threaded rod, and the ball screw nut assembly is provided on the threaded rod. The ball screw nut assembly is connected to the sliding seat.

[0010] The upper surface of the worktable is provided with a mounting groove, and the translation guide rail is installed inside the mounting groove.

[0011] The ceramic capacitor dry pressing device also includes a protective plate. A through groove is provided on the sliding seat. The protective plate is installed above the translation guide rail and passes through the through groove.

[0012] The protective plate has fixing blocks on both sides at both ends. One end of the fixing block is connected to the side of the translation guide rail, and the other end of the fixing block is connected to the side of the protective plate.

[0013] This invention discloses a ceramic capacitor dry pressing device, comprising a worktable, a mounting frame, an upper die assembly, a translation mechanism, a support frame, a female die, and a lower die assembly. By incorporating the translation mechanism and mounting the female die and the lower die assembly together on the movable support frame, they form a module that can be moved as a whole. During operation, the translation mechanism drives the module to extend beyond the worktable. Since the output end of the lower die assembly is pre-inserted into the through-hole of the female die, forming the female die cavity, the operator can safely and conveniently fill the female die cavity with powder in an open external space. After pressing, the translation mechanism moves the module out again, and the output end of the lower die assembly rises to eject the blank, facilitating material removal. This technical solution transforms the female die, originally fixed in a narrow gap, into a movable structure that can be horizontally moved out of the workstation, solving the problems of limited space and low efficiency in feeding and unloading operations caused by a fixed female die. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the ceramic capacitor dry-pressing device according to the first embodiment of the present invention.

[0016] Figure 2 This invention provides Figure 1 A structural diagram from another perspective.

[0017] Figure 3 This is a front view of the ceramic capacitor dry-pressing device according to the first embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the structure of the ceramic capacitor dry-pressing device according to the second embodiment of the present invention.

[0019] Figure 5 This invention provides Figure 4 A magnified view of the local structure at point A.

[0020] 101-Workbench, 102-Mounting bracket, 103-Support bracket, 104-Die, 105-First hydraulic cylinder, 106-Punching plate, 107-Upper punch, 108-Second hydraulic cylinder, 109-Lifting plate, 110-Lower punch, 111-Transfer guide rail, 112-Sliding seat, 113-Servo motor, 114-Threaded rod, 115-Ball screw nut pair, 116-Through hole, 117-Rotating head, 118-Rotating bearing, 119-Mounting groove, 201-Protective plate, 202-Through groove, 203-Fixing block. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] First embodiment: Please see Figures 1 to 3 ,in Figure 1 This is a schematic diagram of the structure of the ceramic capacitor dry-pressing device according to the first embodiment. Figure 2 yes Figure 1 Another structural diagram from the perspective of Figure 3 This is a front view of the ceramic capacitor dry-pressing device of the first embodiment.

[0023] This invention provides a ceramic capacitor dry pressing device, comprising a worktable 101, a mounting frame 102, an upper punch assembly, a translation mechanism, a support frame 103, a female die 104, and a lower punch assembly. The upper punch assembly includes a first hydraulic cylinder 105, a stamping plate 106, and multiple upper punches 107. The lower punch assembly includes a second hydraulic cylinder 108, a lifting plate 109, and multiple lower punches 110. The translation mechanism includes a translation guide rail 111, a sliding seat 112, and a drive assembly. The drive assembly includes a servo motor 113, a threaded rod 114, and a ball screw nut pair 115. This solution addresses the problem in existing ceramic capacitor dry pressing devices where, in practical use, the female die is fixed in the middle of the frame and located in a narrow space between the upper and lower punches, making it inconvenient for operators to feed and remove materials from the female die cavity. It is understood that the aforementioned solution can be applied to the structure of a ceramic capacitor dry pressing device.

[0024] In this specific embodiment, the mounting bracket 102 is installed at the top of the workbench 101, and the upper punch assembly is installed at the top of the mounting bracket 102. The upper surface of the workbench 101 is also provided with the translation mechanism. One end of the translation mechanism is located below the upper punch assembly, and the other end of the translation mechanism extends to the outside of the workbench 101. The output end of the translation mechanism is provided with the support bracket 103. The top of the support bracket 103 is provided with the female die 104. The support bracket 103 is also provided with the lower punch assembly. The female die 104 is provided with a through hole 116. The output end of the upper punch assembly is located above the through hole 116, and the lower punch assembly is located below the through hole 116. The output end of the lower punch assembly extends into the interior of the through hole 116, so that the upper surface of the output end of the lower punch assembly and the port of the through hole 116 form a female die cavity.

[0025] In this embodiment, by setting up the translation mechanism and mounting the female mold 104 and the lower punch assembly together on the movable support frame 103, the two form a module that can be moved as a whole. During operation, the translation mechanism drives the module to move outside the worktable 101. Since the output end of the lower punch assembly has been pre-inserted into the through hole 116 of the female mold 104 to form the female mold cavity, the operator can safely and conveniently fill the female mold cavity in the open external space. After pressing, the translation mechanism moves the module out again, and the output end of the lower punch assembly rises to eject the blank, facilitating material removal. This technical solution transforms the female mold 104, which was originally fixed in a narrow gap, into a movable structure that can be moved horizontally out of the workstation, solving the problems of limited space and low efficiency in feeding and unloading operations caused by a fixed female mold.

[0026] The first hydraulic cylinder 105 is mounted on the crossbeam at the top of the mounting frame 102. The output end of the first hydraulic cylinder 105 is provided with the stamping plate 106. The bottom of the stamping plate 106 is provided with a plurality of upper punches 107. The second hydraulic cylinder 108 is mounted on the inner bottom of the support frame 103. The output end of the second hydraulic cylinder 108 is provided with the lifting plate 109. The upper surface of the lifting plate 109 is provided with a plurality of lower punches 110. The female mold 104 is provided with a plurality of through holes 116. Each through hole 116 is provided with an upper punch 107 above it and a lower punch 110 below it.

[0027] In this embodiment, the first hydraulic cylinder 105 drives the stamping plate 106 and the multiple upper punches 107 to rise and fall synchronously, enabling batch pressing of multiple ceramic capacitor blanks and significantly improving production efficiency. The second hydraulic cylinder 108 drives the lifting plate 109 and the multiple lower punches 110 to rise and fall. On the one hand, before pressing, the upper end of the lower punches 110 extends into the through hole 116 to form the female mold cavity; on the other hand, after pressing, the lower punches 110 continue to rise, pushing the formed blank out of the through hole 116 for easy material removal.

[0028] Secondly, the translation guide rail 111 is installed on the upper surface of the worktable 101, the sliding seat 112 is slidably disposed on the translation guide rail 111, the support frame 103 is disposed on the upper surface of the sliding seat 112, and the driving component is also installed on the translation guide rail 111, the output end of the driving component is connected to the sliding seat 112.

[0029] In this embodiment, the drive component is mounted on the translation guide rail 111 and is connected to the sliding seat 112 for driving the sliding seat 112 to reciprocate between the receiving station and the pressing station.

[0030] Meanwhile, the servo motor 113 is installed on the outside of one end of the translation guide rail 111, and the output end of the servo motor 113 is provided with the threaded rod 114. The threaded rod 114 is provided with the ball screw nut pair 115, and the ball screw nut pair 115 is connected to the sliding seat 112.

[0031] In this embodiment, the servo motor 113, together with the threaded rod 114 and the ball screw nut pair 115, are used as driving components to achieve high-precision displacement control of the sliding seat 112, ensuring that after translation and return to the original position, the multiple through holes 116 on the female mold 104 are precisely aligned with the corresponding multiple upper punches 107 and lower punches 110.

[0032] In addition, a rotating head 117 is provided at the end of the threaded rod 114 away from the servo motor 113, and a rotating bearing 118 is provided at the end of the translation guide rail 111 away from the servo motor 113, with the rotating head 117 embedded inside the rotating bearing 118.

[0033] In this embodiment, by setting the rotating head 117 at the distal end of the threaded rod 114 and embedding it in the rotating bearing 118, the radial runout and axial movement generated by the threaded rod 114 during long-stroke rotation are effectively suppressed, further improving the smoothness and positioning repeatability of the translational transmission and extending the service life of the transmission system.

[0034] Furthermore, the upper surface of the worktable 101 is provided with a mounting groove 119, and the translation guide rail 111 is installed inside the mounting groove 119.

[0035] In this embodiment, the installation of the translation guide rail 111 is facilitated by the installation groove 119.

[0036] When using the ceramic capacitor dry pressing device of this embodiment, the servo motor 113 drives the threaded rod 114 to rotate, causing the ball screw nut pair 115 to move the sliding seat 112 and the support frame 103 along the translation guide rail 111 to the material receiving station outside the worktable 101; the second hydraulic cylinder 108 drives the lifting plate 109 to rise, so that the upper ends of multiple lower punches 110 respectively extend into the bottom of the corresponding through holes 116 on the female mold 104, thereby forming a female mold cavity with an open top inside each through hole 116. The operator fills the female mold cavity with ceramic powder evenly in the open external space; then ..., thereby forming a female mold cavity with an open top inside each through hole 116. The operator fills the female mold cavity with ceramic powder evenly in the open external space; then the servo motor 13. Reverse drive: The support frame 103 is moved back to the pressing station, so that each through hole 116 is precisely aligned directly below the corresponding upper punch 107; the first hydraulic cylinder 105 drives the stamping plate 106 and multiple upper punches 107 to press down synchronously, dry pressing the powder in each negative mold cavity; after pressing is completed, the upper punch 107 is reset, the support frame 103 is moved to the external receiving station again, and the second hydraulic cylinder 108 continues to drive the lifting plate 109 to rise, so that the lower punch 110 pushes the formed ceramic capacitor blank out of the upper port of the through hole 116, and the operator directly picks up the blank, thus completing a complete work cycle.

[0037] Second embodiment: Based on the first embodiment, please refer to Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of the ceramic capacitor dry-pressing device according to the second embodiment. Figure 5 for Figure 4 A magnified view of the local structure at point A.

[0038] The present invention provides a ceramic capacitor dry pressing device, which also includes a protective plate 201.

[0039] In this specific embodiment, a through groove 202 is provided on the sliding seat 112, and the protective plate 201 is installed above the translation guide rail 111. The protective plate 201 passes through the through groove 202. By setting the protective plate 201, the external environment is prevented from affecting the operation of the drive components in the translation guide rail 111.

[0040] The protective plate 201 has fixing blocks 203 on both sides. One end of the fixing block 203 is connected to the side of the translation guide rail 111, and the other end of the fixing block 203 is connected to the side of the protective plate 201. The installation of the protective plate 201 is completed by setting the fixing blocks 203.

[0041] Secondly, the protective plate 201 and the through groove 202 are fitted with a clearance, which makes the sliding seat 112 slide more smoothly on the protective plate 201.

[0042] When using the ceramic capacitor dry pressing device of this embodiment, the installation of the protective plate 201 is completed by setting the fixing block 203. The setting of the protective plate 201 avoids the external environment from affecting the operation of the drive component in the translation guide rail 111.

[0043] The above description discloses only one preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. Those skilled in the art will understand that all or part of the processes of the above embodiments can be implemented, and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A dry-pressing device for ceramic capacitors, characterized in that, The device includes a worktable, a mounting frame, an upper die assembly, a translation mechanism, a support frame, a female die, and a lower die assembly. The mounting frame is mounted on the top of the worktable, and the upper die assembly is mounted on the top of the mounting frame. The translation mechanism is also provided on the upper surface of the worktable. One end of the translation mechanism is located below the upper die assembly, and the other end of the translation mechanism extends to the outside of the worktable. The support frame is provided at the output end of the translation mechanism. The female die is provided at the top of the support frame, and the lower die assembly is also provided on the support frame. The female die has a through hole. The output end of the upper die assembly is located above the through hole, and the lower die assembly is located below the through hole. The output end of the lower die assembly extends into the interior of the through hole, such that the upper surface of the output end of the lower die assembly and the port of the through hole form a female die cavity.

2. The ceramic capacitor dry-pressing device as described in claim 1, characterized in that, The upper punch assembly includes a first hydraulic cylinder, a stamping plate, and multiple upper punches. The lower punch assembly includes a second hydraulic cylinder, a lifting plate, and multiple lower punches. The first hydraulic cylinder is mounted on the crossbeam at the top of the mounting frame. The stamping plate is located at the output end of the first hydraulic cylinder. Multiple upper punches are located at the bottom of the stamping plate. The second hydraulic cylinder is mounted on the inner bottom of the support frame. The lifting plate is located at the output end of the second hydraulic cylinder. Multiple lower punches are located on the upper surface of the lifting plate. The female die has multiple through holes. Each through hole has an upper punch above it and a lower punch below it.

3. The ceramic capacitor dry-pressing device as described in claim 1, characterized in that, The translation mechanism includes a translation guide rail, a sliding seat, and a drive assembly. The translation guide rail is mounted on the upper surface of the worktable, and the sliding seat is slidably disposed on the translation guide rail. The support frame is disposed on the upper surface of the sliding seat. The drive assembly is also mounted on the translation guide rail, and the output end of the drive assembly is connected to the sliding seat.

4. The ceramic capacitor dry-pressing device as described in claim 3, characterized in that, The drive assembly includes a servo motor, a threaded rod, and a ball screw nut assembly. The servo motor is mounted on the outside of one end of the translation guide rail. The output end of the servo motor is provided with the threaded rod, and the ball screw nut assembly is provided on the threaded rod. The ball screw nut assembly is connected to the sliding seat.

5. The ceramic capacitor dry-pressing device as described in claim 4, characterized in that, A rotating head is provided at the end of the threaded rod away from the servo motor, and a rotating bearing is provided at the end of the translation guide rail away from the servo motor. The rotating head is embedded inside the rotating bearing.

6. The ceramic capacitor dry-pressing device as described in claim 3, characterized in that, The upper surface of the worktable is provided with a mounting groove, and the translation guide rail is installed inside the mounting groove.

7. The ceramic capacitor dry-pressing device as described in claim 3, characterized in that, The ceramic capacitor dry pressing device also includes a protective plate. A through groove is provided on the sliding seat. The protective plate is installed above the translation guide rail and passes through the through groove.

8. The ceramic capacitor dry-pressing device as described in claim 7, characterized in that, Fixing blocks are provided on both sides of the protective plate. One end of the fixing block is connected to the side of the translation guide rail, and the other end of the fixing block is connected to the side of the protective plate.

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