Sheet punching device

Abstract

The utility model belongs to the field of circuit board processing, and discloses a punching device which comprises a base, a supporting frame is installed on the base, and a hydraulic cylinder is installed on the top of the supporting frame. The upper die plate set comprises a fixing plate, an upper pressing plate, a discharging plate, discharging bolts and discharging springs, the fixing plate is fixed to the movable end of the hydraulic cylinder, the upper pressing plate is fixed to the bottom of the fixing plate, the discharging plate is arranged on the outer side of the upper pressing plate in a sliding and sleeving mode, the discharging bolts are fixed to the periphery of the top of the discharging plate, and the upper ends of the discharging bolts penetrate through the fixing plate; the head of the unloading bolt abuts against the top of the fixing plate, the unloading spring is arranged on the unloading bolt in a sleeving mode and located between the fixing plate and the unloading plate, and first receding grooves which are coaxially distributed with the unloading bolt are formed in the bottom of the fixing plate and the top of the unloading plate correspondingly; the lower die plate set is installed on the base, and a material ejecting unit is arranged in the lower die plate set. And through the arrangement of the unloading spring and the unloading plate, the formed circuit board cannot be adhered to the upper template group.

Description

Technical Field

[0001] This utility model belongs to the field of circuit board processing technology, specifically relating to a stamping device. Background Technology

[0002] Flexible circuit boards are highly reliable and extremely flexible printed circuit boards made of polyimide or polyester film as the substrate. Currently, in the process of processing flexible circuit boards, stamping equipment is needed to stamp the raw material board placed inside the stamping die. Since the raw material board is usually a sheet, it is also called sheet forming.

[0003] Chinese patent CN220030492U discloses a stamping device for processing flexible circuit boards, including a base, a mounting frame fixedly connected to the top of the base, a mold mounted on the top of the mounting frame, and an opening in the middle of both the mounting frame and the mold. A screw is movably connected inside the mounting frame. A hydraulic cylinder drives a drive rod downwards, which in turn moves a stamping block downwards. The gear then aligns with the toothless area on the side plate, preventing further rotation of the gear. The stamping block continues to move downwards for stamping. After processing, the hydraulic cylinder moves the drive rod and stamping block upwards to reset, causing the side plate to move upwards as well. During this upward movement, the gear at the toothed area reverses, causing the screw to reverse and adjust. This causes the ejector rod to rise and push the circuit board out of the mold cavity, completing the demolding process and facilitating the removal of the stamped circuit board by the worker.

[0004] However, in actual use, since most of the raw materials are thin film sheets, when the upper module is pressed down with greater pressure, the formed circuit board may stick to the upper module and rise with the upper module. At this time, the workers need to manually remove the circuit board, otherwise it will affect the subsequent processing operations. Utility Model Content

[0005] The present invention aims to provide a stamping device to solve the problem mentioned above where the formed circuit board sticks to the upper module.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a lamination apparatus, comprising...

[0007] A base, on which a support frame is mounted, and a hydraulic cylinder is mounted on the top of the support frame;

[0008] The upper template assembly includes a fixed plate, an upper pressure plate, a discharge plate, discharge bolts, and discharge springs. The fixed plate is fixed to the movable end of the hydraulic cylinder, the upper pressure plate is fixed to the bottom of the fixed plate, and the discharge plate is slidably fitted onto the outside of the upper pressure plate. Discharge bolts are fixed around the top of the discharge plate, the upper end of the discharge bolts passes through the fixed plate, and the head of the discharge bolts abuts against the top of the fixed plate. The discharge spring is fitted onto the discharge bolts and is located between the fixed plate and the discharge plate. The bottom of the fixed plate and the top of the discharge plate are both provided with first clearance grooves that are coaxially distributed with the discharge bolts.

[0009] The lower template assembly is installed on the base, and a top material unit is set inside the lower template assembly.

[0010] The principle and effects of this technical solution:

[0011] 1. The upper template group is moved to the lower template group by the hydraulic cylinder, so that the raw material plate in the lower template group can be stamped and formed. The circuit board after forming can be ejected from the lower template group by the setting of the ejector unit, so that the workers can easily pick up the circuit board.

[0012] 2. The stripper plate is mounted on the fixed plate by stripper bolts and is slidably fitted on the outside of the upper pressure plate, allowing the stripper plate to slide relative to the upper pressure plate. The stripper spring causes the stripper plate to move downward relative to the fixed plate spontaneously. After stamping, when the upper mold assembly moves away from the lower mold assembly, the stripper plate will move downward relative to the upper pressure plate due to the rebound force of the stripper spring. This causes the upper pressure plate to separate from the original material plate relative to the stripper plate first, thereby reducing the contact area between the original material plate and the upper mold assembly. At the same time, the reaction force provided by the stripper plate causes the original material plate to move downward relative to the upper pressure plate, thus separating the original material plate from the upper mold assembly and preventing the formed circuit board from sticking to the upper mold assembly.

[0013] The present invention is further configured such that the distance between the bottom edge of the upper pressure plate and the bottom edge of the unloading plate is equal to the distance between the top edge of the unloading plate and the bottom edge of the fixing plate.

[0014] The principle and effect of this technical solution: By controlling the movement distance of the unloading plate relative to the upper pressure plate and the fixed plate, the unloading plate can provide downward pressure for the forming of the top of the original material plate without increasing the size area of ​​the original material plate (i.e., without waste). At the same time, because the ground of the unloading plate is flush with the bottom surface of the upper pressure plate when it abuts against the fixed plate, the unloading plate can participate in the forming normally without interfering with the forming of the original material plate. That is, the unloading plate is both an unloading part and a forming part, which expands the functionality of the upper template group without increasing the size area.

[0015] The present invention is further configured as follows: the lower template assembly includes a concave template and a lower pressure plate. The concave template is fixed on the base, and the lower pressure plate is fixed inside the concave template and corresponds to the upper pressure plate. The unloading plate is adapted to the concave template. The top material unit includes a top material plate, a top material bolt, and a top material spring. The top material plate is slidably fitted inside the concave template and is sleeved on the outside of the upper pressure plate. Top material bolts are fixed around the bottom of the top material plate. The lower end of the top material bolt passes through the concave template, and the head of the top material bolt abuts against the bottom surface of the concave template. A sliding groove corresponding to the top material bolt is opened on the base. The top material spring is sleeved on the top material bolt and is located between the inner bottom surface of the concave template and the top material plate. A second clearance groove coaxially distributed with the top material bolt is opened on the bottom of the top material plate and the inner bottom surface of the concave template.

[0016] The principle and effect of this technical solution: When the unloading plate is pressed down, it first comes into contact with the original material at the top plate, thus pressing down the edge of the original material. By continuing to press down, the original material is simultaneously moved downward by the clamping force, thus avoiding the situation where the original material slides and deflects in the concave mold when the upper mold group is pressed down due to the lack of force at the bottom. This improves the success rate of stamping. When the upper mold group leaves the concave mold, the rebound force of the top spring will drive the top plate to move upward relative to the lower pressure plate, thus separating the bottom of the formed circuit board from the lower pressure plate. This reduces the contact area between the circuit board and the concave mold, and at the same time lifts the circuit board to the top of the concave mold, making it easier for workers to remove the circuit board. The opening of the second relief groove allows the top spring to retract into the second relief groove, thus allowing the top plate to contact the bottom of the concave mold, thereby providing support for the forming of the original material. That is, the top plate is both the top material and the forming part, so it can be used normally without changing the size and area of ​​the original material.

[0017] The present invention is further configured such that the distance between the top edge of the lower pressure plate and the top edge of the top plate is equal to the distance between the bottom edge of the top plate and the inner bottom surface of the concave template.

[0018] The principle and effect of this technical solution: By making the distance between the top plate and the inner bottom edge of the concave template and the top edge of the lower plate equal, when the upper template group presses the original material down to the lowest position, the top plate and the lower plate are flush and together form the forming surface of the bottom of the circuit board. Through the contact between the bottom of the top plate and the inner bottom surface of the concave template, the top plate can also stably bear pressure on the bottom of the original material, so that the bottom surface of the circuit board can be formed.

[0019] The present invention is further configured such that L-shaped guide plates are provided around the top of the concave template.

[0020] The principle and effect of this technical solution: By setting the guide plate, when the raw material is placed above the inner side of the concave die, the position of the raw material can be guided and limited by the guide plate, so that the raw material will not be misaligned relative to the concave die, thus ensuring stamping accuracy. At the same time, the guide plate restricts the lateral movement of the raw material, so that the raw material will not move laterally before penetrating into the inner side of the concave die, further improving the stamping accuracy.

[0021] The present invention is further configured such that the top of the guide plate near the top plate is an arc surface, and the vertical surface of the guide plate near the top plate corresponds to the inner wall of the concave template.

[0022] The principle and effect of this technical solution: By setting the arc surface, when the worker places the raw material plate on the inner side of the concave die through the guide plate, the raw material plate can be guided by the arc surface, and then the position can be adjusted and corrected. This makes it easier for the raw material plate to be placed on the inner side of the concave die through the guide plate. Moreover, due to the limitation of the vertical surface of the guide plate, the raw material plate will not be laterally displaced during stamping, thus ensuring the stamping accuracy. Attached Figure Description

[0023] Figure 1 This is the main structural view of the present invention;

[0024] Figure 2 for Figure 1 A close-up view of the unloading bolt area;

[0025] Figure 3 for Figure 1 A magnified view of a portion of the center-mounted bolt area;

[0026] Figure 4 for Figure 1 Top view of the concave template. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0028] The reference numerals in the accompanying drawings include: 101, base; 102, support frame; 103, hydraulic cylinder; 104, slide groove; 201, fixing plate; 202, upper pressure plate; 203, unloading plate; 204, unloading bolt; 205, unloading spring; 206, first clearance groove; 301, concave template; 302, lower pressure plate; 303, top plate; 304, top bolt; 305, top spring; 306, second clearance groove; 401, guide plate.

[0029] Example:

[0030] As attached Figure 1-4As shown, this utility model discloses a punching device, including a base 101, an upper template assembly, and a lower template assembly. A support frame 102 is mounted on the base 101, and a hydraulic cylinder 103 is mounted on the top of the support frame 102. The upper template assembly includes a fixing plate 201, an upper pressure plate 202, a discharge plate 203, discharge bolts 204, and discharge springs 205. The fixing plate 201 is fixed to the movable end of the hydraulic cylinder 103, the upper pressure plate 202 is fixed to the bottom of the fixing plate 201, and the discharge plate 203 is slidably fitted onto the outside of the upper pressure plate 202. The top four sides of the discharge plate 203 are respectively... A discharge bolt 204 is fixed, the upper end of the discharge bolt 204 passes through the fixing plate 201, and the head of the discharge bolt 204 abuts against the top of the fixing plate 201. A discharge spring 205 is sleeved on the discharge bolt 204 and is located between the fixing plate 201 and the discharge plate 203. The bottom of the fixing plate 201 and the top of the discharge plate 203 are both provided with first clearance grooves 206 that are coaxially distributed with the discharge bolt 204. The distance between the bottom edge of the upper pressure plate 202 and the bottom edge of the discharge plate 203 is equal to the distance between the top edge of the discharge plate 203 and the bottom edge of the fixing plate 201.

[0031] The lower template assembly includes a top-feeding unit. The lower template assembly comprises a concave template 301 and a lower pressure plate 302. The concave template 301 is fixed to the base 101, and the lower pressure plate 302 is fixed inside the concave template 301, corresponding to the upper pressure plate 202. The unloading plate 203 is adapted to the concave template 301. The top-feeding unit includes a top-feeding plate 303, top-feeding bolts 304, and a top-feeding spring 305. The top-feeding plate 303 is slidably fitted inside the concave template 301 and sleeved on the outside of the upper pressure plate 202. Top-feeding bolts 304 are fixed around the bottom of the top-feeding plate 303. The lower end of the top-feeding bolt 304 passes through the concave template 301, and the head of the top-feeding bolt 304 abuts against the bottom surface of the concave template 301. The base 101 has openings... The slide groove 104 corresponds to the top bolt 304. The top spring 305 is sleeved on the top bolt 304 and is located between the inner bottom surface of the concave template 301 and the top plate 303. The bottom of the top plate 303 and the bottom surface of the inner side of the concave template 301 are both provided with second clearance grooves 306 that are coaxially distributed with the top bolt 304. The distance between the top edge of the lower pressure plate 302 and the top edge of the top plate 303 is equal to the distance between the bottom edge of the top plate 303 and the inner bottom surface of the concave template 301. The top of the concave template 301 is provided with L-shaped guide plates 401. The top of the guide plate 401 near the top plate 303 is an arc surface, and the vertical surface of the guide plate 401 near the top plate 303 corresponds to the inner wall of the concave template 301.

[0032] The specific implementation process is as follows:

[0033] In use, the raw material plate is first slidably installed on the top plate 303 inside the concave template 301 via the guide plates 401 around the perimeter. The guide plates 401 limit the movement, ensuring the raw material plate remains horizontally stationary when placed on them. After installation, the hydraulic cylinder 103 is activated, moving the upper template assembly closer to the lower template assembly. The guide plates 401 also guide the upper template assembly. After the unloading plate 203 contacts the raw material plate, the upper pressure plate 202 is still inside the unloading plate 203. The hydraulic cylinder 103 continues to press the upper template assembly downwards, compressing both the unloading spring 205 and the top spring 305. The raw material plate's edges are clamped by the pressure from above and below while moving downwards relative to the concave template 301 until the unloading plate 203 abuts against the fixed plate 201. When the top plate 303 abuts against the bottom inner side of the concave template 301, the upper pressure plate 202 and the lower pressure plate 302 abut against the upper and lower surfaces of the raw material plate respectively. At this time, the upper template group and the lower template group move into place. Through the continuous pressure of the hydraulic cylinder 103, the upper template group applies pressure to the lower template group as a whole, thereby providing pressure for the forming of the raw material plate. After the pressure is maintained, when the upper template group leaves the lower template group, due to the rebound force of the unloading spring 205 and the top spring 305, the raw material plate will move downward relative to the upper pressure plate 202 and upward relative to the lower pressure plate 302, and be lifted by the top plate 303 to the top of the concave template 301, so as to facilitate the worker to pick it up. By separating the raw material plate from the upper pressure plate 202 and the lower pressure plate 302, the situation of the formed circuit board sticking to the upper template group or being stuck in the lower template group is avoided.

[0034] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A tablet punching device, characterized by: Comprising a base, a support frame mounted on the base, a hydraulic cylinder mounted on the top of the support frame; an upper die plate set, including a fixed plate, an upper pressing plate, a stripping plate, stripping bolts and stripping springs, the fixed plate is fixed to the movable end of the hydraulic cylinder, the upper pressing plate is fixed to the bottom of the fixed plate, the stripping plate is slidably sleeved on the outside of the upper pressing plate, the stripping bolts are respectively fixed around the top of the stripping plate, the upper ends of the stripping bolts pass through the fixed plate, the heads of the stripping bolts abut against the top of the fixed plate, the stripping springs are sleeved on the stripping bolts and located between the fixed plate and the stripping plate, the bottom of the fixed plate and the top of the stripping plate are both provided with first clearance grooves coaxially distributed with the stripping bolts; a lower die plate set mounted on the base, the lower die plate set is provided with a ejection unit.

2. A tablet punching device as claimed in claim 1, characterized in that: The distance between the bottom edge of the upper pressing plate and the bottom edge of the stripping plate is equal to the distance between the top edge of the stripping plate and the bottom edge of the fixed plate.

3. A tablet punching device as claimed in claim 1, characterized in that: The lower die plate set includes a concave die plate and a lower pressing plate, the concave die plate is fixed to the base, the lower pressing plate is fixed in the concave die plate and corresponds to the upper pressing plate, the stripping plate is adapted to the concave die plate, the ejection unit includes an ejection plate, ejection bolts and ejection springs, the ejection plate is slidably fitted in the concave die plate and sleeved on the outside of the upper pressing plate, the ejection bolts are fixed around the bottom of the ejection plate, the lower ends of the ejection bolts pass through the concave die plate and the heads of the ejection bolts abut against the bottom surface of the concave die plate, the base is provided with a sliding groove corresponding to the ejection bolts, the ejection springs are sleeved on the ejection bolts and located between the inside bottom surface of the concave die plate and the ejection plate, the bottom of the ejection plate and the inside bottom surface of the concave die plate are both provided with second clearance grooves coaxially distributed with the ejection bolts.

4. A tablet punching device as claimed in claim 3, characterized in that: The distance between the top edge of the lower pressing plate and the top edge of the ejection plate is equal to the distance between the bottom edge of the ejection plate and the inside bottom surface of the concave die plate.

5. A tablet punching device as claimed in claim 3, characterized in that: The concave die plate is provided with guide plates with L-shaped profile around the top.

6. A tablet punching device as claimed in claim 5, characterized in that: The top of the side of the guide plate close to the ejection plate is arc-shaped and the vertical surface of the side of the guide plate close to the ejection plate corresponds to the inner wall of the concave die plate.

Images