Chip Mounting Machine

Abstract

The present invention relates to a chip placement machine, including a machine base, a machine head and a material transfer mechanism, wherein the machine head is movably arranged on the machine base, and the material transfer mechanism includes a support table, a traction assembly, a conveyor belt and an adjustment assembly, wherein the support table is connected to the machine base, and the traction assembly and the conveyor belt are respectively arranged on the support table, wherein in a first working state, the conveyor belt drives the hard board to move along the feeding direction; in a second working state, the traction assembly pulls the soft board to move along the feeding direction; the adjustment assembly includes an adjustment member and a guide member connected to the adjustment member, and the conveyor belt bypasses the guide member from one side of the support table and extends to the other side opposite to the support table, and the adjustment member is detachably connected to the support table to adjust the position of the guide member relative to the support table, thereby adjusting the tension of the conveyor belt. The chip placement machine of the present application utilizes a device compatible with the mounting processing of hard and soft boards, and the adjustment assembly can conveniently adjust the tension of the conveyor belt to prevent the conveyor belt from deflecting or slipping due to insufficient tension during operation.

Description

Technical Field

[0001] The present invention relates to the field of chip placement technology, in particular to a chip placement machine. Background Art

[0002] Automatic placement machines are used to place electronic components at high speed and precision. They are the most critical and complex equipment in the entire SMT (Surface Mounted Technology) production.

[0003] In the related technology, the circuit substrates used for mounting surface components generally include two types: soft boards and hard boards. The most common soft boards are flexible printed circuits, and the most common hard boards are printed circuits. During the mounting process, different mounting equipment is usually required for soft boards and hard boards, and the equipment cost is relatively high. Summary of the invention

[0004] The embodiment of the present invention provides a chip mounter to reduce the cost of chip mount equipment.

[0005] A chip mounter, comprising:

[0006] Machine base;

[0007] A machine head, movably disposed on the machine base; and

[0008] The material moving mechanism includes a support table, a traction assembly, a conveyor belt and an adjustment assembly. The support table is connected to the machine base, and the traction assembly and the conveyor belt are respectively arranged on the support table; the placement machine has a first working state and a second working state. In the first working state, the conveyor belt drives the hard board to move along the feeding direction; in the second working state, the traction assembly pulls the soft board to move along the feeding direction; the adjustment assembly includes an adjustment member and a guide member connected to the adjustment member, the conveyor belt bypasses the guide member from one side of the support table and extends to the other side of the support table, and the adjustment member is detachably connected to the support table to adjust the position of the guide member relative to the support table, thereby adjusting the tension of the conveyor belt.

[0009] In one embodiment, the guide member is rotatably connected to the adjustment member.

[0010] In one embodiment, the support platform includes a platform body and a profile, and in the second direction, the profile is connected to the opposite sides of the platform body respectively, and the profile has a mounting groove extending along the feeding direction, and the adjustment assembly includes a fastener passing through the adjustment member and the mounting groove, and the fastener is used to realize the detachable connection between the adjustment member and the profile, and adjust the relative position of the adjustment member and the profile; the second direction is perpendicular to the feeding direction.

[0011] In one of the embodiments, any of the profiles has at least two parallel and spaced-apart mounting grooves, the adjustment member has a plate body that spans all the mounting grooves along a first direction and covers the mounting grooves, the fastener is passed through the plate body and each of the mounting grooves is passed through the fastener, and the first direction, the second direction and the feeding direction are perpendicular to each other.

[0012] In one of the embodiments, in the feeding direction, at least two of the fasteners are arranged in any one of the mounting grooves at intervals.

[0013] In one embodiment, the traction assembly includes a first driving member connected to the support table, a mounting table linked to the output end of the first driving member, a switching assembly connected to the mounting table, a second driving member and a clamping seat linked to the output end of the switching assembly, and a traction member linked to the output end of the second driving member, and the second driving member is connected to the clamping seat; in a first working state, the switching assembly drives the clamping seat and the traction member to move away from the conveyor belt along a first direction and stop; in a second working state, the switching assembly drives the clamping seat and the traction member to approach the conveyor belt along the first direction, the second driving member drives the traction member to rise and fall in the first direction to move away from the clamping seat to release the soft board, or to move close to the clamping seat to clamp the soft board, and the first driving member drives the mounting table, the switching assembly, the second driving member, the clamping seat and the traction member to move back and forth along the feeding direction.

[0014] In one embodiment, the material moving mechanism includes a guide wheel rotatably connected to the support platform, and the guide wheels are respectively provided on both sides of the support platform along the loading direction. In the first working state, the guide wheels are used to roll in contact with the hard plate to limit the movement range of the hard plate in the second direction.

[0015] In one embodiment, the support table is provided with at least two patch areas at intervals along the loading direction, the patch area is provided with an air cavity, and the conveyor belt is provided with a plurality of air holes arranged at intervals. In the second working state, the portion of the conveyor belt where the air holes are located covers the air cavity, so that the air cavity is connected with the plurality of air holes, so as to generate negative pressure in the air cavity and adsorb and fix the soft board to the patch area.

[0016] In one embodiment, the material moving mechanism includes a blocking component connected to the support table, the blocking component includes a third driving member and a stop member linked to the output end of the third driving member, and the stop member is connected to the edge of the support table; in a first working state, the third driving member drives the stop member to move along the second direction and limits the hard board to the patch area.

[0017] In one embodiment, the material moving mechanism includes a correction component connected to the support table, the correction component includes a fourth driving member and a correction member linked to the output end of the fourth driving member, and the correction member is elastically connected to the output end of the fourth driving member; the material moving mechanism includes a limit plate detachably connected to the edge of the support table, and in a first working state, the fourth driving member drives the correction member to move along the second direction to abut against one side of the hard board, so that the other side of the hard board abuts against the limit plate to position the hard board in the patch area.

[0018] The above chip mounter includes a base, a head and a material transfer mechanism. The head is movably arranged on the base. The material transfer mechanism includes a support table, a traction component, a conveyor belt and an adjustment component. The support table is connected to the base. The traction component and the conveyor belt are respectively arranged on the support table. The chip mounter has a first working state and a second working state. In the first working state, the conveyor belt drives the hard board to move along the feeding direction; in the second working state, the traction component pulls the soft board to move along the feeding direction; the adjustment component includes an adjustment member and a guide member connected to the adjustment member. The conveyor belt bypasses the guide member from one side of the support table and extends to the other side of the support table. The adjustment member is detachably connected to the support table to adjust the position of the guide member relative to the support table, thereby adjusting the tension of the conveyor belt. The chip mounter of the present application can be switched to the first working state when mounting a hard board; and can be switched to the second working state when mounting a soft board, so as to use one device to be compatible with the mounting processing of hard and soft boards, improve the integration and compatibility of the chip mounter, and significantly reduce the cost and occupied space of the equipment compared to two independent chip mount devices. The adjustment component can conveniently adjust the tension of the conveyor belt to prevent the conveyor belt from deflecting or slipping due to insufficient tension during operation, thereby ensuring the normal operation of the conveyor belt in the second working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of a chip mounter according to an embodiment;

[0021] Figure 2 for Figure 1 The top view of the chip mounter after some structures are removed;

[0022] Figure 3 A schematic diagram of a head of a chip mounter according to an embodiment;

[0023] Figure 4 Schematic diagram of a material transfer mechanism of a chip mounter according to an embodiment;

[0024] Figure 5 for Figure 4 An enlarged schematic diagram of point A of the material transfer mechanism shown;

[0025] Figure 6 for Figure 4 An enlarged schematic diagram of point B of the material transfer mechanism shown;

[0026] Figure 7 It is a partial top view of a material transfer mechanism of an embodiment after some structures are removed;

[0027] Figure 8 Another partial top view of a material transfer mechanism of an embodiment after removing part of the structure;

[0028] Fig. 9 for Figure 4 An enlarged schematic diagram of the material transfer mechanism at point C is shown;

[0029] Fig.10 A schematic diagram of a blocking component of a chip mounter according to an embodiment;

[0030] Fig.11 for Figure 4 An enlarged schematic diagram of point D of the material transfer mechanism is shown.

[0031] Reference numerals:

[0032] SMT machine 10, machine base 11, machine head 13, mounting frame 131, linear motor 133, suction head 135, material transfer mechanism 15, support table 151, limiting groove 151a, air cavity 151b, table body 1511, profile 1513, mounting groove 1513a, traction assembly 153, first driving member 1531, mounting table 1533, switching assembly 1535, second driving member 1537, clamping seat 1538, traction member 1539, conveyor belt 155, air hole 155a, adjustment assembly 157, adjustment member 1571, waist-shaped hole 1571a, plate body 15711, guide member 1573, limiting plate 1581, blocking assembly 1583, third driving member 15831, stop member 15833, correction assembly 1585, correction member 15851, guide wheel 1587 DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0036] refer to Figure 1The present invention discloses a chip mounter 10, which can be used to mount surface mount components on a soft board or a hard board. Surface mount components include but are not limited to lamp beads. A soft board can also be called a flexible circuit substrate, which is usually thinner and less rigid. FPC (Flexible Printed Circuit) is a typical soft board. Before the mounting process, the continuous soft board is usually rolled into a roll. During the mounting process, the continuous soft board is gradually unfolded and transferred to the mounting area of ​​the chip mounter 10; after the soft board in the mounting area has been mounted with surface mount components, it can be pulled out of the mounting area and the mounting area can be covered by the unmounted soft board to continue the mounting operation, thereby realizing continuous mounting. After the surface mount components are mounted, the continuous soft board can also be extended from the chip mounter 10 and can be wound into a roll to facilitate handling and transportation.

[0037] Common rigid boards include printed circuit boards, which are much more rigid than flexible boards and are generally processed by mounting surface mount components in blocks. That is, independent rigid boards are transferred to the mounting area of ​​the mounting machine 10 for mounting processing. After a rigid board is mounted, it can be removed and another unmounted rigid board can be placed, thereby realizing the mounting processing of the rigid board.

[0038] refer to Figure 2 and Figure 3 The SMT machine 10 of the present application includes a base 11, a head 13 and a material transfer mechanism 15. The base 11 can adopt a frame structure to provide rigid support for the entire device. The head 13 is movably arranged on the base 11. In some embodiments, the head 13 includes a mounting frame 131 and a plurality of linear motors 133 and a plurality of suction heads 135 arranged on the mounting frame 131. The mounting frame 131 can adopt an integrated molding structure to enhance the rigidity of the overall structure and serve as an assembly reference for other components to ensure the assembly accuracy of these components. A plurality of linear motors 133, for example 10, can be arranged on the mounting frame 131, and the output end of each linear motor 133 corresponds to a linkage with a suction head 135. The suction head 135 is connected to a negative pressure generating device, such as a vacuum pumping device. After the linear motor 133 drives the suction head 135 to descend, it can absorb surface mount components such as lamp beads; the linear motor 133 can then drive the suction head 135 with the surface mount components to rise; the head 13 then drives the suction head 135 to move to the mounting area of ​​the mounting machine 10, and then mounts the surface mount components onto the flexible board or the hard board.

[0039] Continue to refer Figure 2 The placement machine 10 may include more than two groups of material transfer mechanisms 15, the material feeding directions of the two groups of material transfer mechanisms 15 are arranged in parallel, and each group of material transfer mechanisms 15 may correspond to two heads 13 working in parallel. Figure 2In the illustrated embodiment, the placement machine 10 includes two groups of material transfer mechanisms 15, and the entire placement machine 10 is equipped with four heads 13. Parallel operation can be simply understood as two heads 13 can work independently and do not affect each other. When two heads 13 working in parallel are set corresponding to each group of material transfer mechanisms 15, the movement stroke of the head 13 can be set shorter, and the length of the beam structure used to support the movement of each head 13 can also be shortened to ensure the structural rigidity and dimensional accuracy of the beam, prevent the beam from being too long and deformed, and reduce the placement accuracy of the head 13. Moreover, the same staff member can operate the two heads 13 on the same side, and the two parts of the same continuous soft board or two hard boards can be placed at the same time. Compared with a single head 13, the two heads 13 working in parallel can significantly improve the efficiency of placement.

[0040] refer to Figure 4 The material transfer mechanism 15 includes a support platform 151, a traction component 153, a conveyor belt 155 and an adjustment component 157. The support platform 151 is connected to the machine base 11, and the length direction of the support platform 151 is the feeding direction. The traction component 153 and the conveyor belt 155 are respectively arranged on the support platform 151. The placement machine 10 has a first working state and a second working state. In the first working state, the conveyor belt 155 drives the hard board to move along the feeding direction; in the second working state, the traction component 153 pulls the soft board to move along the feeding direction.

[0041] Combined with Figure 4 and Figure 5 The traction assembly 153 may include a first driving member 1531 connected to the support platform 151, a mounting platform 1533 linked to the output end of the first driving member 1531, a switching assembly 1535 connected to the mounting platform 1533, a second driving member 1537 and a clamping seat 1538 linked to the output end of the switching assembly 1535, and a traction member 1539 linked to the output end of the second driving member 1537. The second driving member 1537 is connected to the clamping seat 1538. In the first working state, the switching assembly 1535 drives the second driving member 1537, the clamping seat 1538 and the traction member 1539 to move a distance in the first direction and stop, at least making the clamping seat 1538 and the traction member 1539 away from the conveyor belt 155, and the conveyor belt 155 can use friction to drive the hard board to move in the feeding direction. In the second working state, the switching component 1535 drives the clamping seat 1538 and the traction member 1539 to approach the conveyor belt 155 along the first direction, and the second driving member 1537 drives the traction member 1539 to rise and fall in the first direction to move away from the clamping seat 1538 to release the soft board, or approach the clamping seat 1538 to clamp the soft board, and the first driving member 1531 drives the mounting platform 1533, the switching component 1535, the second driving member 1537, the clamping seat 1538 and the traction member 1539 to move back and forth along the feeding direction.

[0042] The first driving member 1531 may be a stepper motor, the motor shaft of which is the output end, and which can drive the mounting platform 1533 and the switching assembly 1535 connected to the mounting platform 1533, the second driving member 1537, the clamping seat 1538 and the traction member 1539 to move along the feeding direction through a belt transmission structure. In other embodiments, the first driving member 1531 may also be a cylinder or a hydraulic cylinder, the piston rod of which is the output end. Figure 5 In the illustrated embodiment, the switching component 1535 uses a cylinder as a power source, and its output end can drive the second driving member 1537, the clamping seat 1538 and the traction member 1539 to rise and fall relative to the support platform 151 along the first direction, thereby making the clamping seat 1538 and the traction member 1539 approach or move away from the conveyor belt 155 along the first direction. Further, the first direction can be perpendicular to the feeding direction. Of course, in other embodiments, the first direction and the feeding direction can form other angles. In other embodiments. The switching component 1535 can be replaced by a motor combined with a threaded transmission structure, or a motor combined with a gear transmission structure, which will not be repeated here.

[0043] The clamping seat 1538 can be in the shape of a long strip and can extend from one end of the support platform 151 across the conveyor belt 155 to the other end opposite to the support platform 151 along the second direction, i.e., the width direction of the conveyor belt 155. In other words, the first direction, the second direction, and the feeding direction can be perpendicular to each other. The second driving member 1537 can also be a cylinder, and its output end can be detachably connected to the traction member 1539, so that different traction members 1539 can be adaptively replaced according to the structure and size of the soft board to match different soft boards, thereby improving the versatility of the placement machine 10. For example, a waist-shaped hole (not marked in the figure) is set in the traction member 1539, and the traction member 1539 is fixed to the output end of the second driving member 1537 by a fastening bolt (not shown in the figure). After adjusting the relative position of the traction member 1539 and the output end of the second driving member 1537 by using the waist-shaped hole, soft boards of different widths can be adapted, thereby improving the versatility and compatibility of the placement machine 10. Of course, in other embodiments, the second driving member 1537 can be replaced by a motor combined with a threaded transmission structure, or a motor combined with a gear transmission structure, which will not be described in detail here.

[0044] In the first working state, the switching component 1535 drives the traction member 1539, the second driving member 1537 and the clamping seat 1538 connected to its output end to rise in the first direction, at least so that the traction member 1539 and the clamping seat 1538 are away from the conveyor belt 155 to prevent interference with the hard board conveyed by the conveyor belt 155; in the second working state, the switching component 1535 drives the traction member 1539, the second driving member 1537 and the clamping seat 1538 connected to its output end to rise in the first direction. The first driving member 1531 and the mounting platform 1533 pull the traction member 1539 and the clamping seat 1538 to move toward the conveyor belt 155. The traction member 1539 and the clamping seat 1538 are moved toward the conveyor belt 155 compared to the first working state. The second driving member 1537 drives the traction member 1539 to move toward the clamping seat 1538 and clamp the soft board between the traction member 1539 and the clamping seat 1538. The soft board is then pulled by the first driving member 1531 and the mounting platform 1533 to move along the feeding direction.

[0045] In other words, during the hard board mounting process, the operator can set the mounting machine 10 to the first working state, so that the traction member 1539 and the clamping seat 1538 used to pull the soft board to move are away from the conveyor belt 155 to prevent interference with the movement of the hard board; during the soft board mounting process, the mounting machine 10 can be set to the second working state, at which time the conveyor belt 155 and its driving mechanism can stop working, and the traction member 1539 and the clamping seat 1538 are used to pull the soft board along the loading direction, and then reach the mounting area for mounting processing.

[0046] It is understandable that the friction between the conveyor belt 155 and the soft board should not be too large to avoid too much resistance to the soft board caused by the conveyor belt 155 in the second working state. Of course, there needs to be an appropriate static friction between the conveyor belt 155 and the hard board to prevent the hard board from slipping on the conveyor belt 155 in the first working state.

[0047] Furthermore, at least one of the traction member 1539 and the clamping seat 1538 can be provided with a flexible body such as a silicone member or a rubber member, and the flexible body can be used to contact and squeeze the soft board to obtain a relatively large friction force to smoothly pull the soft board to move and avoid scratching the surface of the soft board.

[0048] refer to Figure 6 and Figure 7 The adjustment component 157 may include an adjustment member 1571 and a guide member 1573 connected to the adjustment member 1571. The conveyor belt 155 bypasses the guide member 1573 from one side of the support table 151 and extends to the other side of the support table 151. The adjustment member 1571 is detachably connected to the support table 151 to adjust the position of the guide member 1573 relative to the support table 151, thereby adjusting the tension of the conveyor belt 155.

[0049] Specifically, in some embodiments, the guide member 1573 is cylindrical and rotatably connected to the adjustment member 1571 to reduce the resistance during the operation of the conveyor belt 155. In this embodiment, it is necessary to adjust the position of the adjustment member 1571 relative to the support platform 151 so that the rotation axis of the guide member 1573 is parallel to the second direction, that is, the rotation axis of the guide member 1573 is perpendicular to the feeding direction, so as to achieve smooth operation of the conveyor belt 155 and prevent deflection. In other embodiments, the guide member 1573 can be fixedly connected to the support platform 151, and the arc-shaped guide surface of the guide member 1573 can be used to make the conveyor belt 155 move smoothly from one side of the support platform 151 to the other opposite side.

[0050] Continue to refer Figure 6 and Figure 7 The support platform 151 may include a platform body 1511 and a profile 1513. In the second direction, the profiles 1513 are respectively connected to the opposite sides of the platform body 1511. The profiles 1513 may be aluminum alloy profiles 1513 to reduce the difficulty of processing, ensure the structural rigidity and save costs. The profile 1513 has a mounting groove 1513a extending along the feeding direction. The adjustment component 157 includes a fastener (not shown) penetrating the adjustment member 1571 and the mounting groove 1513a. The fastener is used to realize the detachable connection between the adjustment member 1571 and the profile 1513, and adjust the relative position of the adjustment member 1571 and the profile 1513.

[0051] Specifically, any profile 1513 has at least two parallel and spaced mounting grooves 1513a, the adjustment member 1571 has a plate 15711 that spans all mounting grooves 1513a along the first direction and covers the mounting grooves 1513a, and fasteners are passed through the plate 15711 and each mounting groove 1513a is passed through a fastener. The plate 15711 may be provided with a plurality of spaced waist-shaped holes 1571a, and each mounting groove 1513a may correspond to at least two waist-shaped holes 1571a. That is, in the feeding direction, any mounting groove 1513a is spaced through with at least two fasteners.

[0052] For example, in Figure 6In the illustrated embodiment, the plate 15711 is provided with four waist-shaped holes 1571a, and the profile 1513 is provided with two parallel and spaced mounting grooves 1513a, and each mounting groove 1513a corresponds to two waist-shaped holes 1571a. The long axis direction of the waist-shaped holes 1571a can be along the first direction, so that the position of the adjusting member 1571 in the first direction can be adjusted through the cooperation of the fastener, the waist-shaped holes 1571a and the mounting groove 1513a, thereby adjusting the angle of the conveyor belt 155 relative to the horizontal plane; through the cooperation of the fastener and the mounting groove 1513a, the position of the adjusting member 1571 in the feeding direction can be adjusted, thereby adjusting the angle of the conveyor belt 155 relative to the length direction of the support platform 151 and the tension of the conveyor belt 155. The cooperation between the multiple waist-shaped holes 1571a and the multiple installation grooves 1513a can make it difficult for the adjustment member 1571 to rotate around the second direction, thereby ensuring the installation stability of the adjustment member 1571 on the support platform 151 and the operation stability of the conveyor belt 155.

[0053] In particular, in the embodiment of the present application, the support table 151 is provided with adjustment members 1571 on opposite sides of the second direction. By adjusting the positions of the adjustment members 1571 on both sides relative to the support table 151, the angle of the guide member 1573 relative to the length direction of the support table 151, i.e., the loading direction, can be adjusted, thereby making the part of the conveyor belt 155 used to transport the hard board parallel to the length direction of the support table 151, or making the rotation axis of the guide member 1573 parallel to the second direction, that is, making the rotation axis of the guide member 1573 perpendicular to the loading direction, thereby adjusting the tension of the conveyor belt 155.

[0054] It is understood that the support table 151 can be provided with adjustment components 157 at both ends of the feeding direction to adjust the tension of the conveyor belt 155, so that the conveyor belt 155 has a suitable tension inside, and the length extension direction of the portion of the conveyor belt 155 used to transport the hard board is basically parallel to the length extension direction of the support table 151 (i.e., the feeding direction), so as to prevent the relative slipping or deflection of the support table 151 during operation, thereby reducing the placement accuracy and efficiency of the placement machine 10. It is understood that the guide member 1573 at one end of the support table 151 in the feeding direction can be set as an active roller, and the guide member 1573 is driven by a driving motor to rotate relative to the support table 151, and then the friction force is used to drive the conveyor belt 155 to rotate around the support table 151.

[0055] The above-mentioned placement machine 10 includes a machine base 11, a machine head 13 and a material transfer mechanism 15. The machine head 13 is movably arranged on the machine base 11. The material transfer mechanism 15 includes a support table 151, a traction component 153, a conveyor belt 155 and an adjustment component 157. The support table 151 is connected to the machine base, and the traction component 153 and the conveyor belt 155 are respectively arranged on the support table 151. The placement machine 10 has a first working state and a second working state. In the first working state, the conveyor belt 155 drives the hard board to move along the feeding direction; in the second working state, the traction component 153 pulls the soft board to move along the feeding direction; the adjustment component 157 includes an adjustment member 1571 and a guide member 1573 connected to the adjustment member 1571. The conveyor belt 155 bypasses the guide member 1573 from one side of the support table 151 and extends to the other side of the support table 151. The adjustment member 1571 is detachably connected to the support table 151 to adjust the position of the guide member 1573 relative to the support table 151, thereby adjusting the tension of the conveyor belt 155. The placement machine 10 of the present application can be switched to the first working state when mounting a hard board; and can be switched to the second working state when mounting a soft board, so as to use one device to be compatible with the placement processing of hard and soft boards, improve the integration and compatibility of the placement machine 10, and significantly reduce the cost and occupied space of the equipment compared to two independent placement devices. The adjustment component 157 can conveniently adjust the tension of the conveyor belt 155 to prevent the conveyor belt 155 from deflecting or slipping due to insufficient tension during operation, thereby ensuring the normal operation of the conveyor belt 155 in the second working state.

[0056] refer to Figure 8 and Fig. 9 The material shifting mechanism 15 includes a limit plate 1581 detachably connected to the edge of the support platform 151. The limit plate 1581 covers the edge of the conveyor belt 155 and is spaced from the edge of the conveyor belt 155 to form a limit groove 151a between the limit plate 1581 and the conveyor belt 155. In the first working state, the thickness of the hard board is greater than the height of the limit groove 151a so that it will not be stuck in the limit groove 151a. The limit plate 1581 is used to limit the movement range of the hard board in the second direction, thereby limiting and guiding the movement of the hard board in the feeding direction. In the second working state, the first driving member 1531 pulls the soft board to move in the limit groove 151a along the feeding direction through the traction member 1539.

[0057] refer to Figure 8, the support platform 151 can be detachably connected to the limiting plates 1581 on the opposite sides of the second direction. The limiting plate 1581 is in the shape of a long strip, and its width is much smaller than the width of the support platform 151. For example, the ratio of the width of the limiting plate 1581 to the width of the support platform 151 is less than 1:10. The limiting plate 1581 and the support platform 151 form a limiting groove 151a for accommodating the edge of the continuous soft board, and the limiting groove 151a extends along the feeding direction of the continuous soft board. The height of the limiting groove 151a can be equivalent to the thickness of the continuous soft board to prevent the continuous soft board from deforming and warping during the feeding process. The limiting plate 1581 can be detachably connected by the cooperation of the waist-shaped hole and the threaded fastener, for example, the threaded fastener passes through the waist-shaped hole and is connected to the support platform 151, so as to facilitate the adjustment of the width of the two relative limiting plates 1581 to adapt to the mounting processing of continuous soft boards of different widths. Of course, this method can also adjust the distance between the two limit plates 1581 in the width direction of the support platform 151, so as to adapt to hard boards of different widths and improve the versatility of the placement machine 10.

[0058] The table surface of the support table 151, i.e., the upper surface of the table body 1511, can be a flat and smooth plane to reduce the sliding friction between the support table 151 and the conveyor belt 155, and reduce the movement resistance of the conveyor belt 155. Of course, the surface of the side of the conveyor belt 155 facing the support table 151 can be relatively smooth to reduce the resistance to the movement of the conveyor belt 155, and the side of the conveyor belt 155 facing away from the support table 151 can have a suitable roughness to prevent the hard board from slipping relative to the conveyor belt 155, and avoid causing excessive resistance to the movement of the soft board.

[0059] The support platform 151 may be provided with an air cavity 151b for connecting to the negative pressure generating device, and the air cavity 151b is provided corresponding to the patch area. For example, the support platform 151 may be provided with two patch areas at intervals along the feeding direction, and the two patch areas correspond to the two heads 13, and the patch areas correspond to the air cavity 151b. Fig. 9 , the conveyor belt 155 is provided with a plurality of air holes 155a arranged at intervals, and the air holes 155a can be arranged in an array on the conveyor belt 155, and the aperture of the air holes 155a is much smaller than the width of the air cavity 151a, for example, the aperture of the air holes 155a and the width of the air cavity 151b are 1:10~1:20, so as to reduce vacuum leakage and ensure the adsorption force on the soft board. In the second working state, the portion where the air holes 155a of the conveyor belt 155 are located covers the air cavity 151b, so that the air cavity 151b is connected with the plurality of air holes 155a, so as to generate negative pressure in the air cavity 151b and the air holes 155a and adsorb and fix the soft board to the patch area. When the side of the conveyor belt 155 facing the support table 151 is a relatively smooth surface, the fit between the conveyor belt 155 and the surface of the support table 151 can be ensured, and the adsorption effect of the air holes 155a on the soft board can be ensured.

[0060] During the continuous soft board mounting process, that is, when the placement machine 10 is in the second working state, the switching component 1535 drives the traction member 1539 and the clamping seat 1538 to approach the conveyor belt 155 and stop at a preset position. The conveyor belt 155 can stop at a preset position so that the air cavity 151b corresponds to and communicates with the air hole 155a area of ​​the conveyor belt 155. The unmounted continuous soft board stretches toward the support platform 151 and passes through the limiting groove 151a. The first driving member 1531 drives the switching component 1535, the traction member 1539, the second driving member 1537 and the clamping seat 1538 to move toward the unmounted continuous soft board through the mounting platform 1533. The second driving member 1537 drives the traction member 1539 to rise relative to the clamping seat 1538 so that the continuous soft board can be passed between the traction member 1539 and the clamping seat 1538; the second driving member 1537 then drives the traction member 1539 to descend relative to the clamping seat 1538 to clamp the continuous soft board; the first driving member 1531 then drives the continuous soft board to move in the limiting groove 151a along the loading direction to the area where the air cavity 151b of the support table 151 is located, that is, the patch area, and stops through the traction member 1539. In the patch area, the negative pressure generating device can generate negative pressure between the conveyor belt 155 and the table surface of the support table 151, and between the continuous soft board and the conveyor belt 155, so that the continuous soft board can be reliably adsorbed to the conveyor belt 155 and the support table 151, and the limiting plate 1581 and the limiting groove 151a can be used to prevent the continuous soft board from deforming and bending during the loading process, so that the continuous soft board can be spread evenly on the conveyor belt 155, ensuring the relative position accuracy of the machine head 13 and the continuous soft board, and then ensuring the mounting accuracy of the machine head 13.

[0061] The air cavity 151b and the air hole 155a are arranged correspondingly, which can reduce the positioning accuracy requirement of the air hole 155a, that is, a relatively large air cavity 151b is used to connect multiple air holes 155a, thereby avoiding opening air holes 155a on the support platform 151 and requiring the air holes 155a on the two components to accurately correspond to each other to meet the adsorption requirements of the soft board, thereby reducing the difficulty of processing and control.

[0062] After the continuous soft board on the conveyor belt 155 is mounted, the second driving member 1537 can continue to clamp the continuous soft board through the traction member 1539 and the clamping seat 1538, and the first driving member 1531 pulls the soft board to continue to move forward in the loading direction, so that the unmounted continuous soft board behind moves to the patch area and is adsorbed in the patch area for subsequent mounting operations; after the mounting is completed, the second driving member 1537 can drive the traction member 1539 to rise relative to the clamping seat 1538 to release the continuous soft board, and the first driving member 1531 then drives the traction member 1539 to move backward a preset distance in the loading direction, and the second driving member 1537 then drives the traction member 1539 to descend relative to the clamping seat 1538 to clamp the continuous soft board, and then the first driving member 1531 can pull the mounted soft board forward through the traction member 1539, and the above process is repeated to complete the mounting process of the continuous soft board.

[0063] Further, refer to Fig. 9 and Fig.10 The material transfer mechanism 15 may include a blocking component 1583 connected to the support platform 151, and the blocking component 1583 includes a third driving member 15831 and a stopper 15833 linked to the output end of the third driving member 15831, and the stopper 15833 is connected to the edge of the support platform 151. The third driving member 15831 can be a cylinder or a hydraulic cylinder, and can also be replaced by a motor. In the first working state, the third driving member 15831 drives the stopper 15833 to move along the second direction, that is, the width direction of the conveyor belt 155, and limits the hard board to the patch area in the feeding direction.

[0064] Furthermore, the material transfer mechanism 15 includes a correction component 1585 connected to the support table 151, and the correction component 1585 includes a fourth driving member (not shown) and a correction member 15851 linked to the output end of the fourth driving member, and the correction member 15851 is elastically connected to the output end of the fourth driving member. The fourth driving member can be a cylinder or a hydraulic cylinder, and can also be replaced by a motor. In the first working state, the fourth driving member drives the correction member 15851 to move along the second direction to abut against one side of the hard board, so that the other side of the hard board abuts against the limit plate 1581 to position the hard board in the patch area. The fourth driving member of the correction component 1585 can be similar to the structure and working principle of the third driving member 15831, which will not be repeated here.

[0065] During the hard board mounting process, that is, when the SMT machine 10 is in the first working state, the switching component 1535 drives the traction member 1539 and the clamping seat 1538 away from the conveyor belt 155 to prevent interference with the hard board transported by the conveyor belt 155. The stopper 15833 and the correction member 15851 are in the initial position to prevent interference with the hard board transported by the conveyor belt 155. After the hard board is placed on the conveyor belt 155, it can be detected by a sensor such as a photoelectric sensor in the SMT machine 10. The blocking component 1583 at the discharge end near the SMT area can drive the stopper 15833 to move in the second direction through the third driving member 15831, blocking the hard board in the feeding direction, preventing the hard board from continuing to move forward in the feeding direction, so that the hard board is initially positioned in the SMT area; in response to the collision between the stopper 15833 and the hard board or other detection signals, the conveyor belt 155 can stop running.

[0066] Of course, in the embodiment in which the material transfer mechanism 15 is provided with two patch areas, the blocking component 1583 at the front position (i.e., closer to the discharge end of the material transfer mechanism 15) can be started first, and the hard board at the front position can be initially positioned by using the stopper 15833. The conveyor belt 155 continues to operate, and the hard board is still initially positioned in the patch area at the front position by the stopper 15833. After the hard board at the front position passes through the patch area at the rear position (i.e., closer to the loading end of the material transfer mechanism 15), it can be detected by a photoelectric sensor (not marked in the figure). In response to the detection signal, the blocking component 1583 at the rear position can be started again to initially position the hard board at the rear position in the patch area at the rear position.

[0067] The correction component 1585 is set corresponding to the patch area, that is, at least one set of correction components can be set for each patch area. After the hard board is initially positioned in the patch area, the correction component 15851 is driven by the fourth driving member to move along the second direction to clamp the hard board so that the hard board is positioned in the patch area. The correction component 15851 can have a suitable length in the feeding direction, so that the deflection of the hard board during the feeding movement can be corrected, the relative position accuracy of the hard board and the support table 151 can be achieved, and the mounting accuracy of the head 13 can be ensured, and the clamping of the hard board can be achieved, so that the hard board can be reliably positioned in the patch area.

[0068] After the hard board mounting process is completed, the third driving member 15831 of the blocking component 1583 drives the stopping member 15833 away from the hard board along the second direction, thereby releasing the limit of the hard board in the loading direction; the fourth driving member of the correction component 1585 drives the correction member 15851 away from the hard board along the second direction, thereby further releasing the limit of the hard board in the loading direction, and the conveyor belt 155 can continue to operate and drive the hard board that has completed the mounting process and the hard board that has not been mounted to move forward, and the above process is repeated to complete the mounting process of multiple hard boards.

[0069] There are many ways to elastically connect the correction member 15851 to the output end of the fourth driving member, such as by using a spring or a spring sheet to realize the elastic connection between the correction member 15851 and the output end of the fourth driving member, so as to realize the elastic contact between the correction member 15851 and the hard board in the second direction, and prevent the rigid clamping force on the hard board from being too large and causing damage to the hard board. Of course, the end of the correction member 15851 for clamping the hard board can be provided with a buffer such as a silicone member or a rubber sheet to further avoid rigid collision with the hard board, so as to better protect the hard board and prevent damage to the hard board.

[0070] refer to Fig.11 , the placement machine 10 may include a guide wheel 1587 rotatably connected to the limit plate 1581 or the support platform 151, and more than two guide wheels 1587 may be arranged at intervals along the feeding direction. The support platform 151 may be provided with guide wheels 1587 on opposite sides along the feeding direction, respectively, and the guide wheels 1587 may be raised to avoid entering the limit groove 151a and interfering with the movement of the soft board in the limit groove 151a. In the first working state, the guide wheel 1587 is used to roll in contact with the hard board to limit the movement range of the hard board in the second direction. The circumferential surface of the guide wheel 1587 may be slightly protruding from the edge of the limit plate 1581 or substantially tangent to the edge of the limit plate 1581, so as to utilize the contact between the guide wheel 1587 and the hard board to limit and guide the movement of the hard board in the feeding direction.

[0071] In some embodiments, a guide wheel 1587 is provided on one side of the support platform 151, and a correction piece 15851 is provided on the other opposite side. The limiting plate 1581 and the guide wheel 1587 on the side of the guide wheel 1587 can more easily meet the assembly accuracy. The correction piece 15851 on one side is used to clamp the hard board to ensure the alignment accuracy between the hard board and the patch area, thereby ensuring the mounting accuracy.

[0072] In other embodiments, correction pieces 15851 may be respectively provided on two opposite sides of the support table 151, and the offset distance of the hard board relative to the loading direction may be detected by a photoelectric sensor or the like, thereby adjusting the displacement of the hard board in the second direction by the displacement of the correction pieces 15851 on both sides in the second direction, thereby satisfying the alignment accuracy between the hard board and the patch area, thereby ensuring the mounting accuracy.

[0073] This adjustment method can also avoid repeatedly adjusting the compensation error of the head 13 and reducing the operating efficiency and service life of the head 13. That is, the more expensive head 13 can be operated without considering the compensation error. The correction parts 15851 on both sides can be used to compensate for the deflection of the hard board to simplify the control strategy of the head 13 and simplify the related error compensation structure of the head 13, thereby ensuring the service life and reliability of the head 13.

[0074] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A chip mounter, characterized in that: include: Machine base; A machine head, movably arranged on the machine base; as well as The material moving mechanism includes a support table, a traction assembly, a conveyor belt and an adjustment assembly. The support table is connected to the machine base, and the traction assembly and the conveyor belt are respectively arranged on the support table; the placement machine has a first working state and a second working state. In the first working state, the conveyor belt drives the hard board to move along the feeding direction; in the second working state, the traction assembly pulls the soft board to move along the feeding direction; the adjustment assembly includes an adjustment member and a guide member connected to the adjustment member, the conveyor belt bypasses the guide member from one side of the support table and extends to the other side of the support table, and the adjustment member is detachably connected to the support table to adjust the position of the guide member relative to the support table, thereby adjusting the tension of the conveyor belt.

2. The chip mounter according to claim 1, characterized in that: The guiding member is rotatably connected to the adjusting member.

3. The chip mounter according to claim 2, characterized in that: The support platform includes a platform body and a profile. In the second direction, the profile is connected to the opposite sides of the platform body respectively, and the profile has a mounting groove extending along the feeding direction. The adjustment assembly includes a fastener penetrating the adjustment member and the mounting groove, and the fastener is used to realize the detachable connection between the adjustment member and the profile, and adjust the relative position of the adjustment member and the profile. The second direction is perpendicular to the feeding direction.

4. The chip mounter according to claim 3, characterized in that: Any of the profiles has at least two parallel and spaced-apart mounting grooves, the adjustment member has a plate body that spans all the mounting grooves along a first direction and covers the mounting grooves, the fastener is passed through the plate body and each of the mounting grooves is passed through the fastener, and the first direction and the second direction are perpendicular to the feeding direction in pairs.

5. The chip mounter according to claim 3, characterized in that: In the feeding direction, at least two of the fasteners are arranged at intervals in any installation groove.

6. The chip mounter according to any one of claims 1 to 5, characterized in that: The traction assembly comprises a first driving member connected to the support platform, a mounting platform linked to the output end of the first driving member, a switching assembly connected to the mounting platform, a second driving member and a clamping seat linked to the output end of the switching assembly, and a traction member linked to the output end of the second driving member, wherein the second driving member is connected to the clamping seat; in a first working state, the switching assembly drives the clamping seat and the traction member to move away from the conveyor belt in a first direction and stop; In the second working state, the switching component drives the clamping seat and the traction member to approach the conveyor belt along the first direction, and the second driving member drives the traction member to rise and fall in the first direction to move away from the clamping seat to release the soft board, or approach the clamping seat to clamp the soft board, and the first driving member drives the mounting table, the switching component, the second driving member, the clamping seat and the traction member to reciprocate along the feeding direction.

7. The chip mounter according to claim 6, characterized in that: The material shifting mechanism includes a guide wheel rotatably connected to the support platform, and the guide wheels are respectively provided on both sides of the support platform along the feeding direction. In the first working state, the guide wheels are used to roll in contact with the hard board to limit the movement range of the hard board in the second direction.

8. The chip mounter according to claim 6, characterized in that: The support platform is provided with at least two patch areas at intervals along the loading direction, the patch area is provided with an air cavity, and the conveyor belt is provided with a plurality of air holes arranged at intervals. In the second working state, the portion of the conveyor belt where the air holes are located covers the air cavity, so that the air cavity is connected with the plurality of air holes, so as to generate negative pressure in the air cavity and adsorb and fix the soft board to the patch area.

9. The chip mounter according to claim 8, characterized in that: The material moving mechanism comprises a blocking component connected to the support platform, the blocking component comprises a third driving member and a stopping member linked to an output end of the third driving member, and the stopping member is connected to an edge of the support platform; In the first working state, the third driving member drives the stopping member to move along the second direction and limits the hard board to the patch area.

10. The chip mounter according to claim 9, characterized in that: The material moving mechanism includes a correction component connected to the support table, the correction component includes a fourth driving member and a correction member linked to the output end of the fourth driving member, and the correction member is elastically connected to the output end of the fourth driving member; the material moving mechanism includes a limit plate detachably connected to the edge of the support table, and in a first working state, the fourth driving member drives the correction member to move along the second direction to abut against one side of the hard board, so that the other side of the hard board abuts against the limit plate to position the hard board in the patch area.

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