Load-bearing wear-resistant track assembly for inlet and outlet sections of heavy PCB (printed circuit board) carrier

Abstract

The utility model discloses a load-bearing wear-resistant track assembly for an inlet and outlet section of a heavy PCB (printed circuit board) carrier, which is characterized in that a belt groove on a track is arranged in a form that the upper end is narrow and the lower end is wide, a bearing part is formed at the lower end of the belt groove, and a large part of a belt is exposed at the position of the bearing part, so that the belt can drag the carrier to move forwards; the whole track is made of carbon steel materials, friction force can be effectively reduced, in addition, for a power assembly, two steering wheels at the upper end are transmitted to belt wheels at the two ends so as to drive the belt to rotate in a circulating mode, and as an improvement, the whole track is made of the carbon steel materials. A scheme for enabling the belt to rotate more effortlessly is further provided, namely, the forward and reverse wheels are added and installed in the forward and reverse wheel grooves of the fixed rail, on one hand, rotation points can be increased for the large-tension portion in the middle of the fixed rail, and on the other hand, friction can be reduced for belt rotation in the forward rotation direction and the reverse rotation direction of the upper ends of the forward and reverse wheels.

Description

Technical Field

[0001] The utility model relates to the technical field of chip mounter tracks, in particular to a load-bearing and wear-resistant track assembly for an inlet and outlet section of a heavy-duty PCB board carrier. Background Art

[0002] In the production and processing of PCBs for electrical appliances such as monitors or TVs, after the PCB substrate is manufactured, it needs to be placed in a patch machine to install various components (commonly known as patch). This process requires the use of PCB patch equipment. The in-track and out-track in the patch equipment are responsible for transferring the PCB carrier into and out of the middle support track (patch operation area). As the size of the display increases, the weight of the PCB has increased from dozens of grams to several kilograms. The heaviest can exceed 6kg. The weight increase also brings a problem that the carrier (the fixture that fixes the PCB for patching) will cause serious wear on the upper and lower ends of the belt grooves on both sides of the track. On the one hand, the wear of the track will affect the accuracy of subsequent patches, and on the other hand, the track body needs to be replaced frequently, increasing maintenance costs. In addition, in terms of the belt drive assembly, most of the traditional structures use the end pulley and the motor to directly drive the rotation. For a single set of track space, this approach can meet the requirements of installing the motor on the side of the track, but if multiple sets of tracks are installed at the same time, there is not enough space for the motor to be installed. In addition, the driving effort is not good enough. This patent aims to provide a track assembly that can solve the problem of easy wear of the track, while also overcoming the problem of multiple sets of tracks being installed without occupying space, and can save effort in the transmission assembly. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a load-bearing and wear-resistant track assembly for the inlet and outlet sections of a heavy-duty PCB board carrier to solve the technical problems mentioned in the background technology.

[0004] In order to solve the technical problem, the utility model adopts the following technical solution:

[0005] A load-bearing and wear-resistant track assembly for the import and export sections of a heavy-duty PCB board carrier comprises a base, a motor, a belt, a pulley and a fixed rail, wherein the base is provided with a motor, and pulleys are provided on both sides of the fixed rail, one side of the fixed rail is recessed to form a belt groove, and the belt passes through the belt groove, the pulley and the rotating wheel of the motor in sequence to form a closed-loop structure for cyclic rotation, the belt groove comprises an upper groove wall, an inner groove wall and a bottom groove wall, wherein the width of the bottom groove wall is greater than that of the upper groove wall to form a supporting portion, an origin locator is provided on one side of the fixed rail, and a pressure cover is also adjustably installed on the upper end of the fixed rail.

[0006] Specifically, a first fixing hole is provided through one side of the fixed rail, and a second fixing hole is provided on the pressure cover. The first fixing hole is a long slot-shaped fixing hole, so that the pressure cover can adjust the width of its edge relative to the upper slot wall on the inner and outer sides of the fixed rail.

[0007] Specifically, a steering wheel is also provided on the base, and the steering wheel can turn the transmission direction of the belt coming out of the motor.

[0008] Specifically, a plurality of forward and reverse wheels are provided on the inner side of the fixed track, and the upper and lower ends of the forward and reverse wheels are in close contact with the belt to help save effort during belt transmission.

[0009] Specifically, the two end portions of the fixed rail are recessed to form pulley grooves, a stopper rod is provided on the outer side of the pulley groove, and the middle portion of the fixed rail is recessed to form positive and negative pulley grooves.

[0010] Specifically, the rail is made of carbon steel.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The utility model sets the belt groove on the track to be narrow at the upper end and wide at the lower end, so that a supporting part is formed at the lower end of the belt groove, and a large part of the belt is exposed at the position of the supporting part. The PCB carrier can be directly placed in the supporting part from top to bottom or enter the belt groove supporting part from one side, so that the belt drags the carrier forward, thereby avoiding the carrier from being directly embedded in the belt groove, causing wear on the upper and lower ends of the belt groove. After such improvement, the side of the carrier will only cause friction to the upper side wall of the belt groove. To solve this problem, in this patent, the overall track is made of carbon steel, which can effectively reduce friction. In addition, for the powertrain, the motor of this patent is installed in the base, and is transmitted to the pulleys at both ends through two steering wheels at an upper end to drive the belt to circulate. In order to make the belt rotation more labor-saving, in this patent, positive and negative wheels are also added, which are installed in the middle part of the fixed track. On the one hand, it can increase the rotation point of the part with large pulling force in the middle of the fixed track. On the other hand, the positive rotation direction of the upper end of the positive and negative wheels and the reverse direction of the lower end can reduce friction for belt rotation and save more driving force. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 : It is a front view of the overall structure of the track assembly of the utility model;

[0014] Figure 2 : It is an exploded view of the track fixing structure in the utility model;

[0015] Figure 3 : It is a top view of the track fixing structure in the utility model;

[0016] Figure 4 :for Figure 3 Cross-section in the AA direction;

[0017] Figure 5 : It is the belt drive closed loop route map in the track assembly of the utility model;

[0018] Figure 6 : This is a usage scenario diagram of the transmission vehicle of the utility model;

[0019] Figure 7 : It is a schematic diagram of the track fixing structure described in Example 2 of the utility model (from top to bottom, it is a front view, a rear view and a bottom view respectively);

[0020] Figure 8 : It is a three-dimensional angle decomposition diagram of track determination in Example 2;

[0021] In the figure: base 1, motor 5, belt 6, pulley 7, fixed rail 2, belt groove 3, upper groove wall 31, inner groove wall 32, bottom groove wall 33, supporting part 331, origin locator 21, pressure cover 4, first fixing hole 22, second fixing hole 41, forward and reverse wheels 8, stop rod 23, pulley groove 24, steering wheel 9, forward and reverse wheel groove 25. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0023] refer to Figures 1 to 8 :

[0024] Embodiment 1: The utility model patent discloses a load-bearing wear-resistant track assembly for the import and export sections of a heavy-duty PCB board carrier, comprising a base 1, a motor 5, a belt 6, a pulley 7 and a fixed track 2, wherein the base 1 is provided with a motor 5, the fixed track 2 is fixedly provided above the base 1, pulleys 7 are provided on both sides of the fixed track 2, one side of the fixed track 2 is recessed along its length direction to form a belt groove 3, the belt 6 passes through the belt groove 3, the pulley 7 and the rotating wheel of the motor 5 in sequence to form a closed-loop structure for cyclic rotation, the belt groove 3 comprises an upper groove wall 31, an inner groove wall 32 and a bottom groove wall 33, wherein the width of the bottom groove wall 33 is greater than that of the upper groove wall 3 1, from the side, the protruding part of the bottom groove wall 33 forms a supporting part 331, and the bottom of both sides of the PCB carrier is just close to the supporting part 331. Compared with the traditional method of directly embedding the carrier into the belt groove 3, with this structure, the carrier will only have some friction at the section just entering the belt groove 3, the middle position and the end section, and this friction will only be generated on the upper groove wall 31, and will not be generated on the bottom groove wall 33 and the inner groove wall 32. Therefore, this method can reduce the wear of the belt groove 3 on the fixed rail 2. In order to further enhance the wear resistance of the fixed rail 2, in this patent, the preferred fixed rail 2 is The rail 2 is made of carbon steel. Specifically, in order to identify the position of the carrier on the belt groove 3, an origin locator 21 is provided on one side of the fixed rail 2. When the origin locator 21 recognizes that the carrier passes through, that is, the light emitted by it is blocked, it is considered to have reached the origin position, and the motor 5 stops rotating. When the current PCB is pasted and the system issues a new command to allow it to enter, it will continue to move forward, thereby inputting the carrier into the middle rail for patch operation. Specifically, in order to prevent the carrier from shaking, a pressure cover 4 is also adjustably installed on the upper end of the fixed rail 2. Specifically, a first fixed Hole 22, a second fixing hole 41 is provided on the pressure cover 4, and the first fixing hole 22 is a long slot-shaped fixing hole. The pressure cover 4 is fixed to the first fixing hole 22 and the second fixing hole 41 by bolts. After being fixed, since the first fixing hole 22 is a long slot-shaped hole, it is arranged in this way. When it comes to carriers of different heights and thicknesses, the size of the pressure cover 4 extending toward one side of the supporting portion 331 can be adjusted according to needs. The function of the pressure cover 4 is mainly to cooperate with the supporting portion 331 to form upper and lower limit stops to prevent the carrier from falling out. Specifically, the carrier enters the belt groove 3 horizontally, so the pressure cover 4 is generally installed in the middle position of the fixed rail 2.

[0025] Specifically, the base 1 is also provided with a steering wheel 9, and the steering wheel 9 can redirect the transmission direction of the belt 6 from the motor 5. The motor 5 is installed on the base 1 instead of directly driving the pulley 7 to rotate. This is mainly due to the number of fixed rails 2 to be installed later. When a set is installed normally, it is no problem to install the motor 5 on the outside of the fixed rail 2. However, when the number increases, the two fixed rails 2 are close, and it is impossible to install extra motors 5. Here, this problem is solved. In addition, a pair of steering wheels 9 is installed here, mainly because when the length of the belt 6 is too long, if there is no rotating shaft in the middle to pivot, the belt 6 is easy to shake, thereby affecting the transmission efficiency.

[0026] Embodiment 2: Specifically, a plurality of forward and reverse wheels 8 are provided on the inner side of the track fixing 2, and the upper and lower ends of the forward and reverse wheels 8 are both in close contact with the belt 6. With the addition of the forward and reverse wheels 8, the upper end moves forward to the left, while the lower end moves forward to the right, thereby forming an upward and downward dragging force to help save effort when the belt 6 is transmitted.

[0027] Specifically, the two end positions of the fixed rail 2 are recessed to form pulley grooves 24, and a stopper 23 is provided on the outside of the pulley groove 24. The stopper 23 can prevent the vehicle from scratching the pulley 7 or the belt 6 when entering the fixed rail 2. The middle position of the fixed rail 2 is recessed to form a positive and negative wheel groove 25, and the positive and negative wheels 8 are installed in the positive and negative wheel installation grooves 25. Figure 7 The following are the three angles of view of track determination: front view, rear view and upward view. Figure 8 Shown is a three-dimensional angle exploded view of the track fixing 2 in this embodiment.

[0028] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A heavy-duty PCB carrier inlet and outlet section load-bearing wear-resistant track assembly, including a base, a motor, a belt, a pulley and a track, characterized in that: A motor is installed on the base, and pulleys are installed on both sides of the fixed rail. One side of the fixed rail is recessed to form a belt groove. The belt passes through the belt groove, the pulley and the motor wheel in sequence to form a closed-loop structure for circular rotation. The belt groove includes an upper groove wall, an inner groove wall and a bottom groove wall, wherein the width of the bottom groove wall is greater than that of the upper groove wall to form a supporting portion. An origin locator is provided on one side of the fixed rail, and a pressure cover is also adjustably installed on the upper end of the fixed rail.

2. A heavy-duty PCB carrier inlet and outlet section load-bearing wear-resistant track assembly as claimed in claim 1, characterized in that: A first fixing hole is provided through one side of the fixed rail, and a second fixing hole is provided on the pressure cover. The first fixing hole is a long slot-shaped fixing hole, so that the pressure cover can adjust the width of its edge relative to the upper slot wall on the inner and outer sides of the fixed rail.

3. A heavy-duty PCB carrier inlet and outlet section load-bearing wear-resistant track assembly as claimed in claim 2, characterized in that: The base is also provided with a steering wheel, and the steering wheel can turn the transmission direction of the belt from the motor.

4. A heavy-duty PCB carrier inlet and outlet section load-bearing wear-resistant track assembly as claimed in claim 3, characterized in that: A plurality of forward and reverse wheels are also arranged on the inner side of the track fixing device, and the upper and lower ends of the forward and reverse wheels are both in close contact with the belt to help save effort during belt transmission.

5. A heavy-duty PCB carrier inlet and outlet section load-bearing wear-resistant track assembly as described in any one of claims 1 to 4, characterized in that: The two end portions of the fixed rail are recessed to form pulley grooves, a stopper is arranged on the outer side of the pulley groove, and the middle portion of the fixed rail is recessed to form positive and negative pulley grooves.

6. A heavy-duty PCB carrier inlet and outlet section load-bearing wear-resistant track assembly as claimed in claim 5, characterized in that: The fixed rail is made of carbon steel.

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