Turntable transmission mechanism and circuit board liquid homogenizing treatment equipment

Abstract

The utility model relates to the technical field of circuit board equipment, and discloses a turntable transmission mechanism and circuit board uniform liquid treatment equipment, the turntable transmission mechanism comprises a base, a first transmission assembly arranged on the base, a material loading assembly and a driving assembly; the material loading assembly comprises a support and a rotating disc, the rotating disc is rotatably arranged on the support, the rotating axis of the rotating disc is arranged in the horizontal direction, and the rotating disc is used for fixing a circuit board. The second transmission assembly is arranged on the support and comprises a roller, the roller is arranged on the first transmission assembly in a rolling mode in the first direction, and the roller is located below the rotary disc; the driving assembly is used for driving the support to move in the first direction and driving the second transmission assembly to move, and when the second transmission assembly moves in the first direction, the rolling wheels roll on the first transmission assembly along with movement of the second transmission assembly and drive the rotary disc to rotate. According to the utility model, the problem that the liquid medicine is not uniform when the board surface of the circuit board is sprayed is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board equipment, and particularly relates to a turntable transmission mechanism and a circuit board liquid leveling treatment device. Background Technique

[0002] During the processing of printed circuit boards, the circuit boards generally need to go through processing procedures such as developing, water washing, etching, and drying in sequence. The existing liquid leveling treatment devices usually place the circuit boards horizontally and position them before processing.

[0003] Generally, when the circuit board is placed horizontally, during the process of spraying the liquid medicine on the circuit board, since it is very difficult to place the circuit board completely horizontally during positioning, a pool effect will be formed on the circuit board surface, that is, water accumulates on the board surface, resulting in uneven treatment effects on the entire circuit board surface. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a turntable transmission mechanism, aiming to solve the problem of uneven liquid medicine when spraying the circuit board surface.

[0005] To achieve the above purpose, the turntable transmission mechanism proposed by the utility model includes: a base;

[0006] A material loading component, including a bracket and a turntable, the turntable is rotatably arranged on the bracket, the rotation axis of the turntable is arranged in the horizontal direction, and the turntable is used to fix the circuit board;

[0007] A first transmission component, arranged on the base;

[0008] A second transmission component, arranged on the bracket, the second transmission component includes a roller, the roller is rollably arranged on the first transmission component along a first direction, and the roller is located below the turntable; and

[0009] A driving component, used to drive the bracket to move along the first direction and drive the second transmission component to move. When the second transmission component moves along the first direction, the roller rolls on the first transmission component along with the movement of the second transmission component and drives the turntable to rotate.

[0010] In one embodiment, the first transmission component includes a rack, the rack extends along the first direction, the second transmission component further includes a gear in transmission connection with the roller, the gear is located on one side of the roller along the first direction and meshes with the rack, and the gear rolls along the first direction on the rack, driving the roller to roll along the first direction.

[0011] In one embodiment, there are two racks, which are respectively located on both sides of the roller along the first direction. A protrusion is provided on one side of the two racks close to the roller, and a guide channel is formed between the two protrusions. Part of the roller is located in the guide channel, and the guide channel is used to guide the direction of movement of the roller.

[0012] In one embodiment, the second transmission assembly further includes a connecting member, one end of the connecting member is located on one side of the roller along the first direction and between the roller and the gear, and the other end of the connecting member is connected to the bracket, and the bracket drives the second transmission assembly to move along the first direction through the connecting member.

[0013] In one embodiment, the roller is provided with a snap-in groove along the circumference, and a portion of the outer edge of the turntable is snap-into the snap-in groove. The roller rolls along a first direction, and the turntable is driven to rotate by the friction between the snap-in groove wall and the turntable.

[0014] In one embodiment, the bracket is provided with an auxiliary wheel, the auxiliary wheel is provided with a fixing groove along the circumference, and part of the outer edge of the turntable is clamped in the fixing groove. The auxiliary wheel is used to fix the turntable to prevent the turntable from detaching from the clamping groove.

[0015] In one embodiment, the driving assembly includes a transmission chain and a toggle member connected to each other, and the transmission chain rotates and drives the toggle member to move;

[0016] The bracket comprises a crossbar, which is extended in a direction perpendicular to a first direction and parallel to a horizontal plane, and the toggle member is used to push the crossbar in the first direction so that the bracket moves in the first direction.

[0017] In one embodiment, there are multiple brackets, and buffers are provided at both ends of the multiple brackets along the first direction, and the buffers are used to buffer the collision between two adjacent brackets.

[0018] In one embodiment, a through hole is formed through the turntable along the rotation axis, and fixing members for fixing the circuit board are provided on both sides of the through hole along the first direction, so that the circuit board can be detachably fixed on the turntable.

[0019] The utility model also provides a circuit board liquid homogenization processing device, comprising the turntable transmission mechanism described in any one of the above embodiments.

[0020] The technical solution of the present utility model is to arrange the rotation axis of the turntable horizontally and rotatably on the bracket, so that the circuit board on the turntable is vertically installed, and the roller in the second transmission component is indirectly driven by the driving component to drive the turntable to rotate, so as to realize the rotation of the circuit board along with the rotation of the turntable; after the board surface of the circuit board is infiltrated with the liquid medicine, the liquid medicine will flow under the action of gravity or centrifugal force, and the rotation of the circuit board can make the liquid medicine evenly distributed on its board surface, and the excess liquid medicine will drip or be thrown out, avoiding the formation of a pool effect, preventing the local area of the board surface from being over-treated due to the residual liquid medicine, and at the same time avoiding the uneven treatment effect of the upper and lower parts of the board surface by the liquid medicine when the circuit board is vertical. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0022] Figure 1 Schematic diagram of the structure of an embodiment of the turntable transmission mechanism of the present utility model;

[0023] Figure 2 Schematic diagram of the structure of another embodiment of the turntable transmission mechanism of the present utility model;

[0024] Figure 3 Schematic diagram of the structure of yet another embodiment of the turntable transmission mechanism of the present utility model;

[0025] Figure 4 Schematic diagram of the structure of the second transmission component of the present utility model;

[0026] Figure 5 Schematic diagram of the structure of the first transmission component of the present utility model;

[0027] Figure 6 Schematic diagram of the structure of the driving component of the present utility model.

[0028] Explanation of the reference numerals in the drawings:

[0029] 100 - turntable transmission mechanism, 200 - circuit board;

[0030] 110 - base;

[0031] 120 - loading component, 121 - bracket, 1211 - auxiliary wheel, 1212 - cross bar, 1213 - buffer, 122 - turntable, 122a - through hole, 1221 - fixing piece;

[0032] 130 - The first drive assembly, 131 - Rack, 131a - Guide channel, 1311 - Protrusion;

[0033] 140 - The second drive assembly, 141 - Roller, 141a - Clamping groove, 142 - Gear, 143 - Connector, 144 - Rotating shaft;

[0034] 150 - The drive assembly, 151 - Transmission chain, 152 - Poking member.

[0035] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0037] It should be noted that all the directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0039] During the processing of a printed circuit board, the circuit board generally needs to go through processing procedures such as developing, water washing, etching, drying, etc. in sequence. The existing liquid homogenization processing device usually places and positions the circuit board horizontally for processing.

[0040] Generally, when the circuit board is placed horizontally, during the processing of spraying liquid medicine on the circuit board, since it is very difficult to place the circuit board completely horizontally during positioning, a pool effect will be formed on the circuit board surface, that is, water accumulates on the board surface, resulting in uneven processing effects on the entire circuit board surface.

[0041] To solve the above problems, please refer to Figures 1 to 6 The present utility model provides a turntable transmission mechanism 100, which includes:

[0042] A base 110;

[0043] A material loading assembly 120, including a bracket 121 and a turntable 122. The turntable 122 is rotatably arranged on the bracket 121, and the rotation axis of the turntable 122 is arranged in the horizontal direction. The turntable 122 is used to fix the circuit board 200;

[0044] A first transmission assembly 130, arranged on the base 110;

[0045] A second transmission assembly 140, arranged on the bracket 121. The second transmission assembly 140 includes a roller 141. The roller 141 is rollably arranged on the first transmission assembly 130 along a first direction, and the roller 141 is located below the turntable 122; and

[0046] A driving assembly 150, used to drive the bracket 121 to move along the first direction and drive the second transmission assembly 140 to move. When the second transmission assembly 140 moves along the first direction, the roller 141 rolls on the first transmission assembly 130 along with the movement of the second transmission assembly 140 and drives the turntable 122 to rotate.

[0047] In this embodiment, the rotation axis of the turntable 122 is arranged in the horizontal direction and rotatably arranged on the bracket 121, so that the circuit board 200 on the turntable 122 is vertically installed, and the driving assembly 150 indirectly drives the roller 141 in the second transmission assembly 140 to drive the turntable 122 to rotate, so as to realize the rotation of the circuit board 200 along with the rotation of the turntable 122; after the surface of the circuit board 200 is infiltrated with the liquid medicine, the liquid medicine will flow under the action of gravity or centrifugal force. The rotation of the circuit board 200 can make the liquid medicine evenly distributed on its surface, and the excess liquid medicine will drip or be thrown out, avoiding the pool effect, preventing the local area of the board surface from being over-treated due to the residual liquid medicine, and at the same time avoiding the uneven treatment effect of the upper and lower parts of the board surface of the circuit board 200 when it is vertical.

[0048] It can be understood that the first transmission assembly 130 is arranged on the base 110, and the base 110 and the first transmission assembly 130 do not move along with the movement of the bracket 121. In some embodiments, the first transmission assembly 130 includes multiple groups of line rollers, and the roller 141 rolls on multiple groups of line rollers along with the movement of the second transmission assembly 140, so as to convert the translation of the bracket 121 into the rolling of the roller 141 during the transmission process. In other embodiments, no limitation is imposed on the first transmission assembly 130.

[0049] It should be noted that the roller 141 is located below the turntable 122, and the below refers to the below along the gravity direction. The first direction refers to the direction in which the circuit board 200 moves when the circuit board 200 is being processed.

[0050] In addition, if the driving component 150 rotates quickly, causing the circuit board 200 to rotate quickly, the medicine liquid on the circuit board 200 can still be evenly diffused from the center to the surroundings under the action of centrifugal force. However, the edge of the circuit board 200 will be treated again by the medicine liquid diffused outward from the axial position of the turntable 122, resulting in uneven treatment effects in the middle and surrounding areas of the circuit board 200. Therefore, in one embodiment, the driving component 150 drives the turntable 122 to rotate slowly so that the medicine liquid on the circuit board 200 always flows from top to bottom, so that each area of ​​the circuit board 200 can be evenly treated by the medicine liquid.

[0051] In the embodiments of the present invention, please refer to Figure 2 and Figure 3 The first transmission assembly 130 includes a rack 131, which extends along the first direction. The second transmission assembly 140 also includes a gear 142 that is transmission-connected to the roller 141. The gear 142 is located on one side of the roller 141 along the first direction and meshes with the rack 131. The gear 142 rolls on the rack 131 along the first direction, driving the roller 141 to roll along the first direction.

[0052] In this embodiment, the cooperation of the rack 131 and the gear 142 transmits the roller 141, reduces the vibration of the roller 141 using other transmission methods, provides a stable transmission for the turntable 122, and reduces the risk of damage to the circuit board 200 on the turntable 122 due to vibration. The bite force between the meshing of the rack 131 and the gear 142 prevents the roller 141 from falling off the first transmission assembly 130, thereby improving the stability of the utility model. In one embodiment, the number of the racks 131 is two, and the two racks 131 are respectively located on both sides of the roller 141 along the first direction, the number of the gears 142 is two, and the two gears 142 are respectively meshed with the two racks 131. The cooperation of the two gears 142 and the two racks 131 prevents the roller 141 from deviating from the first direction when rolling, thereby improving the accuracy of the utility model. In one embodiment, the roller 141 and the gear 142 are connected by a rotating shaft 144.

[0053] In the embodiments of the present invention, please refer to Figure 1 and Figure 5, the number of racks 131 is two. The two racks 131 are respectively located on both sides of the roller 141 along the first direction. On the side of the two racks 131 close to the roller 141, there are protrusions 1311. A guiding channel 131a is formed between the two protrusions 1311. Part of the roller 141 is located in the guiding channel 131a, and the guiding channel 131a is used to guide the moving direction of the roller 141.

[0054] Further, in order to ensure that the roller 141 displaces along the first direction, the width of the guiding channel 131a formed by the protrusions 1311 of the two racks 131 matches the width of the roller 141 to ensure that the roller 141 displaces in the guiding channel 131a. It can be understood that the guiding channel 131a extends along the first direction.

[0055] It should be noted that when installing the roller 141, the two protrusions 1311 can be used as positioning parts. Installing the roller 141 in the guiding channel 131a between the two protrusions 1311 is regarded as the completion of the installation of the roller 141, which improves the disassembly and assembly efficiency of the present utility model.

[0056] In the embodiment of the present utility model, please refer to Figure 4 , the second transmission component 140 further includes a connecting piece 143. One end of the connecting piece 143 is located on one side of the roller 141 along the first direction and between the roller 141 and the gear 142. The other end of the connecting piece 143 is connected to the bracket 121, and the bracket 121 drives the second transmission component 140 to move along the first direction through the connecting piece 143.

[0057] In this embodiment, the second transmission component 140 further includes a rotating shaft 144. The rotating shaft 144 passes through the centers of the roller 141 and the gear 142 to realize the transmission connection between the roller 141 and the gear 142. A bearing seat (not shown in the figure) is sleeved on one side of the roller 141 along the first direction outside the rotating shaft 144. There is a bearing in the bearing seat. The bearing seat is located between the roller 141 and the gear 142, and the connecting piece 143 is fixedly connected to the bearing seat. Therefore, when the bracket 121 drives the second transmission component 140 to move through the connecting piece 143, the rotating shaft 144, the roller 141 and the gear 142 roll along the first direction, and the connecting piece 143 moves along the first direction, thereby realizing the conversion of the translation of the bracket 121 into the rolling of the roller 141 and finally driving the rotation of the turntable 122.

[0058] In the embodiment of the present utility model, please refer to Figure 4 , the roller 141 is provided with a clamping groove 141a along the circumferential direction. The outer edge of part of the turntable 122 is clamped in the clamping groove 141a. The roller 141 rolls along the first direction, and drives the turntable 122 to rotate through the friction force between the wall of the clamping groove 141a and the turntable 122.

[0059] In the embodiments of the present invention, please refer to Figure 2 An auxiliary wheel 1211 is provided on the bracket 121, and a fixing groove (not shown in the figure) is provided along the circumference of the auxiliary wheel 1211. The outer edge of part of the turntable 122 is clamped in the fixing groove. The auxiliary wheel 1211 is used to fix the turntable 122 to prevent the turntable 122 from detaching from the clamping groove 141a.

[0060] In this embodiment, the auxiliary wheel 1211 is located above the roller 141. The auxiliary wheel 1211 and the roller 141 respectively clamp the outer edge of the turntable 122 at different positions in the clamping groove 141a and the fixed groove to prevent the turntable 122 from escaping from the clamping groove 141a or the fixed groove during rotation.

[0061] In the embodiments of the present invention, please refer to Figure 2 and Figure 6 The driving assembly 150 includes a transmission chain 151 and a toggle member 152 connected to each other, and the transmission chain 151 rotates and drives the toggle member 152 to move;

[0062] The bracket 121 includes a cross bar 1212 extending in a direction perpendicular to the first direction and parallel to the horizontal plane. The toggle member 152 is used to push the cross bar 1212 in the first direction to move the bracket 121 in the first direction.

[0063] In this embodiment, the driving assembly 150 also includes a motor, which drives the transmission chain 151 to rotate. The rotation of the transmission chain 151 drives the toggle member 152 to rotate. During the rotation process, when the toggle member 152 rotates to the same plane as the cross bar 1212, the toggle member 152 pushes the cross bar 1212 to move in the first direction, thereby driving the bracket 121 to move along the first direction.

[0064] In the embodiments of the present invention, please refer to Figure 1 There are multiple brackets 121 , and buffers 1213 are provided at both ends of the multiple brackets 121 along the first direction. The buffers 1213 are used to buffer the collision between two adjacent brackets 121 .

[0065] In this embodiment, the turntable transmission mechanism 100 has a plurality of workstations, each of which can be used to place a loading assembly 120. In order to prevent the vibration caused by the collision of the brackets 121 of two adjacent loading assemblies 120 from affecting the treatment effect of the liquid medicine on the circuit board 200, a buffer member 1213 is arranged between two adjacent brackets 121 to absorb the vibration caused by the collision between the brackets 121, thereby ensuring that the liquid medicine can flow on the circuit board 200 under the action of gravity or centrifugal force and be evenly distributed on the surface of the circuit board 200.

[0066] In the embodiments of the present invention, please refer to Figure 2, the turntable 122 is provided with a through hole 122a penetrating along the rotation axis. On both sides of the through hole 122a along the first direction, there are fixing members 1221 for fixing the circuit board 200, so as to detachably fix the circuit board 200 on the turntable 122.

[0067] In this embodiment, the setting of the through hole 122a reduces the weight of the turntable 122, so that the friction force for the roller 141 to drive the turntable 122 to rotate is reduced, and indirectly reduces the power required for the driving assembly 150 to drive the roller 141 to rotate. In one embodiment, the turntable 122 is further provided with a plurality of avoidance holes to facilitate the disassembly or installation of the circuit board 200. In one embodiment, the fixing member 1221 is a hanging clip, and the circuit board 200 is clamped by the hanging clip, reducing the contact area between the fixing member 1221 and the circuit board 200, so as to avoid the problem that the fixing member 1221 covers the circuit board 200 and causes the liquid medicine to not react with the covered part, thereby improving the processing effect of the circuit board 200.

[0068] The present utility model also proposes a circuit board liquid homogenization processing device, which includes a spraying mechanism for infiltrating liquid and a turntable transmission mechanism 100. The specific structure of the turntable transmission mechanism 100 refers to the above embodiment. Since this circuit board liquid homogenization processing device adopts all the technical solutions of the above all embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated one by one here.

[0069] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent structural transformations made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present utility model.

Claims

1. A turntable transmission mechanism, characterized in that: include: Pedestal; The material loading assembly comprises a bracket and a turntable, wherein the turntable is rotatably arranged on the bracket, the rotation axis of the turntable is arranged in a horizontal direction, and the turntable is used to fix the circuit board; A first transmission assembly, disposed on the base; a second transmission assembly, disposed on the bracket, the second transmission assembly comprising a roller, the roller being rotatably disposed on the first transmission assembly along a first direction, the roller being located below the turntable; as well as The driving assembly is used to drive the bracket to move along the first direction and drive the second transmission assembly to move. When the second transmission assembly moves along the first direction, the roller rolls on the first transmission assembly along with the movement of the second transmission assembly and drives the turntable to rotate.

2. The turntable transmission mechanism according to claim 1, characterized in that: The first transmission component includes a rack extending along a first direction, and the second transmission component also includes a gear connected to the roller for transmission, the gear is located on one side of the roller along the first direction and meshes with the rack, and the gear rolls on the rack along the first direction to drive the roller to roll along the first direction.

3. The turntable transmission mechanism according to claim 2, characterized in that: There are two racks, which are respectively located on both sides of the roller along the first direction. A protrusion is provided on one side of the two racks close to the roller, and a guide channel is formed between the two protrusions. Part of the roller is located in the guide channel, and the guide channel is used to guide the direction of movement of the roller.

4. The turntable transmission mechanism according to claim 2, characterized in that: The second transmission assembly also includes a connecting member, one end of which is located on one side of the roller along the first direction and between the roller and the gear, and the other end of the connecting member is connected to the bracket, and the bracket drives the second transmission assembly to move along the first direction through the connecting member.

5. The turntable transmission mechanism according to claim 1, characterized in that: The roller is provided with a clamping groove along the circumference, and a portion of the outer edge of the turntable is clamped in the clamping groove. The roller rolls along a first direction, and the turntable is driven to rotate by the friction between the clamping groove wall and the turntable.

6. The turntable transmission mechanism according to claim 5, characterized in that: The bracket is provided with an auxiliary wheel, and the auxiliary wheel is provided with a fixing groove along the circumference, and the outer edge of part of the turntable is clamped in the fixing groove. The auxiliary wheel is used to fix the turntable to prevent the turntable from detaching from the clamping groove.

7. The turntable transmission mechanism according to claim 1, characterized in that: The driving assembly includes a transmission chain and a toggle member connected to each other, wherein the transmission chain rotates and drives the toggle member to move; The bracket comprises a crossbar, which is extended in a direction perpendicular to a first direction and parallel to a horizontal plane, and the toggle member is used to push the crossbar in the first direction so that the bracket moves in the first direction.

8. The turntable transmission mechanism according to claim 1, characterized in that: There are multiple brackets, and buffers are provided at both ends of the multiple brackets along the first direction. The buffers are used to buffer the collision between two adjacent brackets.

9. The turntable transmission mechanism according to claim 1, characterized in that: The turntable is provided with a through hole along the rotation axis, and fixing members for fixing the circuit board are provided on both sides of the through hole along the first direction so as to detachably fix the circuit board on the turntable.

10. A circuit board liquid homogenization treatment device, characterized in that: It comprises a turntable transmission mechanism as described in any one of claims 1 to 9.

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