Die for PCB milling cutter machining

Abstract

The utility model relates to the technical field of dies, in particular to a PCB milling cutter machining die which comprises a box body, a lower die base and an upper die base, a plurality of die cavities are formed in the surface of the lower die base, an electric push rod is fixed in the box body, and an output shaft of the electric push rod is detachably connected with the lower die base through a connecting assembly. A plurality of ejector rods movably connected with the die cavity are fixed to the top of the box body, and the bottom of the lower die base is detachably connected with a fixing plate through a mounting mechanism. The fixing plate can be conveniently detached from the bottom of the lower die base through the hook matched with the T-shaped block, an exposed die cavity can be cleaned, an output shaft of the electric push rod can be rapidly separated from the bottom of the lower die base through the positioning plate and the clamping frame, when the fixing plate is put down, the fixing plate can extrude the piston rod, and the piston rod is prevented from being damaged. The piston rod extrudes air from the through hole for buffering, and at the moment, the reset spring can reset the piston rod.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a mold for processing PCB milling cutters. Background Art

[0002] PCB milling cutters are commonly used tools in electronics manufacturing, primarily for cutting and engraving circuit boards. They remove material at a fixed feed rate within the machine. Molds are important tools used in industrial production to create objects with specific shapes and sizes. Milling cutters are formed using molds and then processed into milling cutters using machining equipment.

[0003] The current milling cutter processing mold uses a mold cavity to shape the milling cutter, such as a forming mold for processing an integral alloy milling cutter for aluminum disclosed in Chinese patent publication number "CN215279781 U". When the first mold body moves, the ejector rod and the ejector plate can eject the mold from the first mold cavity, thereby achieving the purpose of demolding the mold. The limiting member is inserted into the limiting groove. Through the design of the limiting member and the limiting groove, the first mold body and the second mold body are more tightly connected, which can improve the quality of the mold. The forming mold for processing an integral alloy milling cutter for aluminum has a reasonable design, a tight connection, and the advantage of easy demolding.

[0004] Since the current milling cutter processing mold uses multiple molding cavities and the molding cavity is deep, the bottom of the molding cavity is difficult to clean. Dust easily accumulates at the bottom of the cavity, affecting normal molding processing. At the same time, the mold itself is large in size and is not convenient to disassemble and transport when moving. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art, such as the bottom of the molding cavity is difficult to clean, dust easily accumulates at the bottom of the cavity affecting normal molding processing, and it is inconvenient to disassemble and transport during movement, and to propose a mold for PCB milling cutter processing.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A mold for PCB milling cutter processing is designed, which includes a box body, a lower mold base and an upper mold base. Several mold cavities are opened on the surface of the lower mold base. An electric push rod is fixed inside the box body, and the output shaft of the electric push rod is detachably connected to the lower mold base through a connecting assembly. Several push rods movably connected to the mold cavity are fixed on the top of the box body, and the bottom of the lower mold base is detachably connected to a fixed plate through a mounting mechanism. Buffer structures are provided on both sides of the top of the box body.

[0008] Furthermore, the connecting assembly includes a fixing ring fixed to the bottom of the lower mold base and a mounting block fixed to one end of the output shaft of the electric push rod. Fixing strips are provided on both sides of the bottom of the mounting block, and a clamping assembly is provided between the fixing ring and the fixing strip.

[0009] Furthermore, the clamping assembly includes columns fixed on both sides of the bottom of the fixing ring and a movable sleeve rotatably connected to the surface of the column, a positioning plate is fixed on one side of the movable sleeve, a pull rod is slidably connected to the inside of the fixing bar, and a clamping frame clamped to the positioning plate is fixed at one end of the pull rod, and a first spring is provided on the surface of the pull rod, and the two ends of the first spring respectively conflict with the fixing bar and the clamping frame.

[0010] Furthermore, the mounting mechanism includes hooks fixed on both sides of the bottom of the lower mold base, and slide grooves opened on both sides of the fixed plate, and a T-shaped block with an inner end that fits the end face of the hook is slidably connected to the inner side of the slide groove, and a second spring is provided on the inner side of the slide groove and the two sides of the second spring respectively conflict with the inner side of the T-shaped block and the slide groove, and the hook is movably engaged with the T-shaped block.

[0011] Furthermore, a protrusion is fixed on the outer side of the T-block and the protrusion extends to the outside of the sliding groove, and grooves for sliding the protrusion are formed at both ends of the fixing plate.

[0012] Furthermore, the buffer structure includes mounting grooves on both sides of the top of the box body and a buffer cylinder fixed inside the mounting groove. The interior of the buffer cylinder is slidably connected to a piston rod, and a buffer block is fixed to the other end of the piston rod. A through hole is provided on the surface of the buffer cylinder, and a return spring is provided between the piston rod and the buffer cylinder, and the two ends of the return spring respectively conflict with the buffer cylinder and the piston rod.

[0013] The utility model proposes a mold for PCB milling cutter processing, which has the beneficial effects that: the utility model can conveniently remove the fixing plate from the bottom of the lower mold base and clean the exposed mold cavity through the hook and the T-block, and can quickly separate the output shaft of the electric push rod from the bottom of the lower mold base through the positioning plate and the clamping frame. When the fixing plate is lowered, the fixing plate will squeeze the piston rod, and the piston rod will squeeze out air from the through hole to provide a buffer, and at this time the reset spring can reset the piston rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 ;

[0016] Figure 3This is a schematic diagram of the partial three-dimensional structure of the utility model Figure 1 ;

[0017] Figure 4 This is a schematic diagram of the partial three-dimensional structure of the utility model Figure 2 ;

[0018] Figure 5 For this utility model Figure 1 A partial enlarged view of point A in the middle;

[0019] Figure 6 For this utility model Figure 3 A partial enlarged view of point B in the middle.

[0020] In the figure: 1. box body; 2. lower mold base; 3. upper mold base; 4. mold cavity; 5. electric push rod; 6. connecting assembly; 61. fixing ring; 62. mounting block; 63. fixing bar; 7. ejector rod; 8. mounting mechanism; 81. hook; 82. slide groove; 83. T-block; 84. second spring; 9. fixing plate; 10. buffer structure; 101. mounting groove; 102. buffer cylinder; 103. piston rod; 104. buffer block; 105. through hole; 106. reset spring; 11. clamping assembly; 111. column; 112. movable sleeve; 113. positioning plate; 114. pull rod; 115. clamping frame; 116. first spring; 12. protrusion; 13. groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Reference Figure 1-6 A mold for PCB milling cutter processing includes a box body 1, a lower mold base 2 and an upper mold base 3. A plurality of mold cavities 4 are opened on the surface of the lower mold base 2. An electric push rod 5 is fixed inside the box body 1, and the output shaft of the electric push rod 5 is detachably connected to the lower mold base 2 through a connecting component 6. A plurality of ejector rods 7 movably connected to the mold cavity 4 are fixed on the top of the box body 1, and a fixing plate 9 is detachably connected to the bottom of the lower mold base 2 through an installation mechanism 8. Buffer structures 1 are provided on both sides of the top of the box body 1. 0; The processing mold can conveniently remove the fixed plate 9 from the bottom of the lower die base 2 and clean the exposed die cavity through the hook 81 and the T-block 83. The output shaft of the electric push rod 5 can be quickly separated from the bottom of the lower die base 2 through the positioning plate 113 and the clamping frame 115. When the fixed plate 9 is lowered, the fixed plate 9 will squeeze the piston rod 103, and the piston rod 103 will squeeze out air from the through hole 105 for buffering. At this time, the reset spring 106 can reset the piston rod 103.

[0023] In this embodiment, the connecting component 6 includes a fixing ring 61 fixed to the bottom of the lower mold base 2 and a mounting block 62 fixed to one end of the output shaft of the electric push rod 5. Fixing bars 63 are provided on both sides of the bottom of the mounting block 62. A clamping component 11 is provided between the fixing ring 61 and the fixing bar 63. The mounting block 62 can be interlocked with the fixing ring 61 to facilitate guiding and fixing.

[0024] Furthermore, the clamping assembly 11 includes columns 111 fixed on both sides of the bottom of the fixing ring 61 and a movable sleeve 112 rotatably connected to the surface of the column 111. The surface of the column 111 is provided with a ring bar for limiting. A positioning plate 113 is fixed to one side of the movable sleeve 112. A pull rod 114 is slidably connected to the inside of the fixing bar 63, and a clamping frame 115 clamped with the positioning plate 113 is fixed to one end of the pull rod 114. The inner side of the clamping frame 115 is provided with a horizontal bar for limiting, and the surface of the pull rod 114 is sleeved with a first spring 116, and the two ends of the first spring 116 respectively conflict with the fixing bar 63 and the clamping frame 115. Rotating the positioning plate 113 and pulling the pull rod 114 can clamp the clamping frame 115 to the outside of the positioning plate 113, thereby realizing the separation of the electric push rod 5 and the lower mold base 2.

[0025] Furthermore, the mounting mechanism 8 includes hooks 81 fixed on both sides of the bottom of the lower mold base 2, and slide grooves 82 opened on both sides of the fixed plate 9. A T-shaped block 83 with an inner end that fits the end face of the hook 81 is slidably connected to the inner side of the slide groove 82. A second spring 84 is provided on the inner side of the slide groove 82, and the two sides of the second spring 84 respectively conflict with the T-shaped block 83 and the inner side of the slide groove 82. The hook 81 is movably engaged with the T-shaped block 83, and the hook 81 can cooperate with the T-shaped block 83 to achieve locking, which facilitates the disassembly and assembly of the fixed plate 9 from the lower mold base 2.

[0026] In addition, a protrusion 12 is fixed on the outer side of the T-block 83 and the protrusion 12 extends to the outside of the slide groove 82, and grooves 13 for sliding the protrusion 12 are provided at both ends of the fixed plate 9. The protrusion 12 can fit the fingers and can be moved in conjunction with the groove 13 to remove the fixed plate 9.

[0027] It should be noted that the buffer structure 10 includes mounting grooves 101 on both sides of the top of the box body 1 and a buffer cylinder 102 fixed inside the mounting groove 101. The interior of the buffer cylinder 102 is slidably connected to a piston rod 103, and a buffer block 104 is fixed to the other end of the piston rod 103. A through hole 105 is provided on the surface of the buffer cylinder 102. A return spring 106 is provided between the piston rod 103 and the buffer cylinder 102, and the two ends of the return spring 106 are respectively in conflict with the buffer cylinder 102 and the piston rod 103. By squeezing the piston rod 103, the piston rod 103 squeezes out air from the through hole 105 to perform buffering. At this time, the return spring 106 can reset the piston rod 103.

[0028] Working method: When performing milling cutter processing, the staff will close the mold of the upper mold base 3 and the lower mold base 2 and inject molding through the top. When demolding, it is only necessary to retract the electric push rod 5. The electric push rod 5 can drive the lower mold base 2 to move downward, and the push rod 7 can push out the milling cutter formed in the mold cavity 4. When cleaning is needed, the staff needs to use their fingers to move the protrusion 12. The protrusion 12 can drive the T-block 83 to squeeze the second spring 84 to release the limit and remove the fixed plate 9. Then the fixed plate 9 will fall to the top of the box body 1 and squeeze the piston rod 103. The piston rod 103 squeezes out air from the through hole 105 for buffering. At this time, the reset spring 106 can reset the piston rod 103. When disassembling the lower mold base 2 and the box body 1, the staff only needs to pull the pull rod 114 inward. The pull rod 114 drives the clamping frame 115 to disengage from the positioning plate 113 to rotate the positioning plate 113, and then the electric push rod 5 and the lower mold base 2 can be separated.

[0029] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mold for PCB milling cutter processing, comprising a box (1), a lower mold base (2) and an upper mold base (3), characterized in that: A plurality of mold cavities (4) are provided on the surface of the lower mold base (2); an electric push rod (5) is fixed inside the box body (1); and the output shaft of the electric push rod (5) is detachably connected to the lower mold base (2) via a connecting assembly (6); a plurality of ejector rods (7) movably connected to the mold cavities (4) are fixed on the top of the box body (1); and a fixing plate (9) is detachably connected to the bottom of the lower mold base (2) via a mounting mechanism (8); and buffer structures (10) are provided on both sides of the top of the box body (1).

2. A mold for PCB milling cutter processing according to claim 1, characterized in that: The connecting assembly (6) comprises a fixing ring (61) fixed to the bottom of the lower die base (2) and a mounting block (62) fixed to one end of the output shaft of the electric push rod (5), fixing strips (63) are provided on both sides of the bottom of the mounting block (62), and a clamping assembly (11) is provided between the fixing ring (61) and the fixing strip (63).

3. The mold for PCB milling cutter processing according to claim 2, characterized in that: The clamping assembly (11) includes columns (111) fixed on both sides of the bottom of the fixing ring (61) and a movable sleeve (112) rotatably connected to the surface of the column (111), a positioning plate (113) is fixed on one side of the movable sleeve (112), a pull rod (114) is slidably connected inside the fixing bar (63), and a clamping frame (115) clamped to the positioning plate (113) is fixed at one end of the pull rod (114), and a first spring (116) is sleeved on the surface of the pull rod (114), and the two ends of the first spring (116) are respectively in conflict with the fixing bar (63) and the clamping frame (115).

4. The mold for PCB milling cutter processing according to claim 1, characterized in that: The mounting mechanism (8) comprises hooks (81) fixed to both sides of the bottom of the lower die base (2), and slide grooves (82) provided on both sides of the fixed plate (9), a T-shaped block (83) with an inner end in contact with the end surface of the hook (81) is slidably connected to the inner side of the slide groove (82), a second spring (84) is provided on the inner side of the slide groove (82), and both sides of the second spring (84) respectively contact the inner side of the T-shaped block (83) and the inner side of the slide groove (82), and the hook (81) is movably connected to the T-shaped block (83).

5. The mold for PCB milling cutter processing according to claim 4, characterized in that: A protrusion (12) is fixed on the outside of the T-shaped block (83) and the protrusion (12) extends to the outside of the sliding groove (82), and grooves (13) for sliding the protrusion (12) are provided at both ends of the fixing plate (9).

6. The mold for PCB milling cutter processing according to claim 1, characterized in that: The buffer structure (10) comprises mounting grooves (101) provided on both sides of the top of the box body (1) and a buffer cylinder (102) fixed inside the mounting groove (101); a piston rod (103) is slidably connected to the inside of the buffer cylinder (102); a buffer block (104) is fixed to the other end of the piston rod (103); a through hole (105) is provided on the surface of the buffer cylinder (102); a return spring (106) is provided between the piston rod (103) and the buffer cylinder (102), and the two ends of the return spring (106) are respectively in contact with the buffer cylinder (102) and the piston rod (103).

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