A die height indicator transmission mechanism for a press machine

Abstract

The invention discloses a die height indicator transmission mechanism of a press machine, which comprises an output shaft, a direction converter, a first sprocket, a second sprocket, a tensioning sprocket and a chain. The output shaft is arranged horizontally, the first sprocket shaft is connected to the first shaft end of the output shaft, the second sprocket is fixedly sleeved on the connecting shaft of a worm in the press, the tensioning sprocket is installed on the inner side surface of the front main board of a slider in the press, the transmission ratio of the first sprocket to the second sprocket is 1:1, the first sprocket, the second sprocket and the tensioning sprocket are connected by a chain, the second shaft end of the output shaft is connected to the input end of the direction converter, and the output end of the direction converter is connected to the die height indicator in the press by a linearly arranged flexible shaft; the advantage is that the service life of the flexible shaft can be greatly extended, thereby reducing the maintenance cost and reducing the loss caused to customers by downtime.

Description

Technical Field

[0001] The invention relates to a die height indicator of a mechanical press, in particular to a die height indicator transmission mechanism of the press. Background Art

[0002] Mechanical presses are widely used in the field of mechanical processing. Figure 2a and Figure 2b As shown, the mechanical press includes a slider 1, a die height indicator 2, a meshing worm 3 and a worm wheel 4, the die height indicator 2 is mounted on the front main board 11 of the slider 1, the die height indicator 2 is close to the operator's position and the position of the electric control operation panel, and this position is far from the end 31 of the worm 3. The die height indicator 2 is connected to the end 31 of the worm 3 through a long flexible shaft 5, so that the reading displayed by the die height indicator 2 is consistent with the actual die height. The mechanical press of this structure can make the reading displayed by the die height indicator 2 consistent with the actual die height by using only one flexible shaft 5, which is not only simple in structure but also easy to install. However, due to space limitations, the flexible shaft 5 will be bent into two R angles when it is installed. When the R angle is too small, the flexible shaft 5 will not rotate smoothly, and the internal resistance of the flexible shaft 5 is relatively large. After a long period of use, the flexible shaft 5 will be broken inside or at both ends. On the one hand, this will cause the reading of the mold height indicator 2 to be invalid; on the other hand, the flexible shaft 5 needs to be stopped to be replaced. Although the flexible shaft 5 is a small component and its own cost is not high, the maintenance cost is very high, and the loss caused to the customer by the shutdown is also relatively large, which will result in a situation of "losing the big for the small". Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a die height indicator transmission mechanism for a press machine, which can greatly extend the service life of a flexible shaft, thereby reducing maintenance costs and reducing losses to customers due to downtime.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: a die height indicator transmission mechanism of a press, characterized in that it includes an output shaft, a direction converter, a first sprocket, a second sprocket, a tensioning sprocket, and a chain, the output shaft is horizontally arranged, the first sprocket is axially connected to the first shaft end of the output shaft, the second sprocket is fixedly sleeved on the connecting shaft of the worm in the press, the tensioning sprocket is installed on the inner side surface of the front main board of the slider in the press, the transmission ratio of the first sprocket to the second sprocket is 1:1, the first sprocket, the second sprocket and the tensioning sprocket are connected by the chain, the second shaft end of the output shaft is connected to the input end of the direction converter, and the output end of the direction converter is connected to the die height indicator in the press through a linearly arranged flexible shaft.

[0005] The transmission mechanism also includes a fixed seat, a collar, an end cover, an upper fixed plate, a lower fixed plate and a bracket, wherein the output shaft coaxially passes through the fixed seat, the output shaft is connected to the inner side surface of the first end of the fixed seat through a first bearing, the output shaft is connected to the inner side surface of the second end of the fixed seat through a second bearing, the collar is sleeved outside the output shaft and clamped between the first bearing and the second bearing, the end cover is connected to the second end of the fixed seat, the second shaft end of the output shaft is embedded in the inner shaft end of the end cover and fixedly connected to the end cover, the outer shaft end of the end cover is connected to the input end of the direction converter, the direction converter is fixed to the upper fixed plate, the upper fixed plate and the fixed seat are fixed to the lower fixed plate, the lower fixed plate is installed on the bracket, and the bracket is installed on the body of the slider in the press. Here, the fixed seat provides protection for the output shaft; the end cover is used to connect the output shaft to the input end of the direction converter to transmit the output force; the upper fixed plate is used to raise the height position of the direction converter so that its input end is at the same height as the second shaft end of the output shaft.

[0006] The first end of the fixing seat has an annular limiting boss extending horizontally toward the center, the first bearing is limited by the annular limiting boss and the collar, an annular limiting piece is provided between the inner side surface of the second end of the fixing seat and the output shaft, and the second bearing is limited by the annular limiting piece and the collar. The annular limiting boss, the collar, and the annular limiting piece are used to limit the first bearing and the second bearing.

[0007] An annular plug-in portion is arranged on the inner shaft end of the end cover, and the annular plug-in portion is inserted into the second end head of the fixing seat and abuts against the inner annular surface of the second end of the fixing seat.

[0008] The two sides of the bracket are low with middle protrusions, the lower fixing plate is installed on the middle protrusion of the bracket, and the two side parts of the bracket are fixedly connected to the body of the slider. The bracket of this structure uses the middle protrusion to support the direction converter and the fixing seat, and uses the two side parts to fix them. The space under the middle protrusion provides a space for screws used to fasten the bracket and the lower fixing plate.

[0009] The tension sprocket is mounted on the inner side of the front main board of the slider through an L-shaped mounting frame. The L-shaped mounting frame can ensure that the installed tension sprocket is on the same plane as the first sprocket and the second sprocket, so that they can be connected together through a chain; other mounting frames such as T-shaped mounting frames can also be used in actual design.

[0010] The output end of the direction converter is at the same height as the mold height indicator, so that the flexible shaft connecting the output end of the direction converter and the mold height indicator is always in a horizontal straight line state without any twisting or pulling.

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

[0012] 1) The connection from the worm drive to the die height indicator drive is realized through the worm connecting shaft, the second sprocket, the first sprocket, the output shaft, the direction converter, and the linearly arranged flexible shaft, so that the die height indicator can accurately display the die height value. Since the flexible shaft is arranged in a straight line and has no R angle, the rotation of the flexible shaft has little effect on the service life of the flexible shaft; although the transmission mechanism has a certain cost, it is durable and requires less maintenance, which reduces the maintenance cost and also reduces the loss caused to customers by downtime.

[0013] 2) The transmission mechanism has a simple structure and is easy to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1a A top view of a partial structure of a press machine to which the transmission mechanism of the present invention is applied;

[0015] Figure 1b for Figure 1a AA section view;

[0016] Figure 1c A top view of the transmission mechanism of the present invention;

[0017] Figure 1d for Figure 1c BB section view;

[0018] Figure 2a A top view of a partial structure of an existing mechanical press;

[0019] Figure 2b for Figure 2a CC section view. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below with reference to the accompanying drawings.

[0021] The present invention proposes a die height indicator transmission mechanism for a press machine, such as Figure 1a to Figure 1dAs shown, it includes an output shaft 91, a direction converter 92, a first sprocket 93, a second sprocket 94, a tensioning sprocket 95, and a chain 96. The output shaft 91 is horizontally arranged, the first sprocket 93 is axially connected to the first shaft end of the output shaft 91, the second sprocket 94 is fixedly sleeved on the connecting shaft 32 of the worm 3 in the press, the tensioning sprocket 95 is installed on the inner side of the front main board 11 of the slider 1 in the press, the transmission ratio of the first sprocket 93 to the second sprocket 94 is 1:1, the first sprocket 93, the second sprocket 94 and the tensioning sprocket 95 are connected by the chain 96, the second shaft end of the output shaft 91 is connected to the input end of the direction converter 92, and the output end of the direction converter 92 is connected to the mold height indicator 2 in the press through a linearly arranged flexible shaft 5.

[0022] In this embodiment, the transmission mechanism also includes a fixed seat 81, a collar 82, an end cover 83, an upper fixed plate 84, a lower fixed plate 85 and a bracket 86. The output shaft 91 coaxially passes through the fixed seat 81. The output shaft 91 is connected to the inner side surface of the first end of the fixed seat 81 through a first bearing 87, and the output shaft 91 is connected to the inner side surface of the second end of the fixed seat 81 through a second bearing 88. The collar 82 is sleeved on the outside of the output shaft 91 and clamped between the first bearing 87 and the second bearing 88. The end cover 83 is connected to the second end head of the fixed seat 81. The second shaft end of the output shaft 91 is embedded in the inner shaft end of the end cover 83 and fixedly connected to the end cover 83. The outer shaft end of the end cover 83 is connected to the input end of the direction converter 92. The direction converter 92 is fixed on the upper fixed plate 84, the upper fixed plate 84 and the fixed seat 81 are fixed on the lower fixed plate 85, the lower fixed plate 85 is installed on the bracket 86, and the bracket 86 is installed on the body 12 of the slider 1 in the press. Here, the fixing seat 81 provides protection for the output shaft 91; the end cover 83 is used to connect the output shaft 91 and the input end of the direction converter 92 to transmit the output force; the upper fixing plate 84 is used to raise the height position of the direction converter 92 so that its input end is at the same height as the second shaft end of the output shaft 91.

[0023] In this embodiment, the first end of the fixing seat 81 has an annular limiting boss 811 extending horizontally toward the center, the first bearing 87 is limited by the annular limiting boss 811 and the collar 82, an annular limiting piece 812 is provided between the inner side surface of the second end of the fixing seat 81 and the output shaft 91, and the second bearing 88 is limited by the annular limiting piece 812 and the collar 82. The annular limiting boss 811, the collar 82, and the annular limiting piece 812 are used to limit the first bearing 87 and the second bearing 88.

[0024] In this embodiment, an annular plug-in portion 831 is provided on the inner shaft end of the end cover 83 , and the annular plug-in portion 831 is inserted into the second end head of the fixing seat 81 and abuts against the inner annular surface of the second end of the fixing seat 81 .

[0025] In this embodiment, the bracket 86 has two lower middle protrusions on both sides, the lower fixing plate 85 is mounted on the middle protrusion 861 of the bracket 86, and the two side parts 862 of the bracket 86 are fixedly connected to the body 12 of the slider 1. The bracket 86 of this structure uses the middle protrusion 861 to support the direction converter 92 and the fixing seat 81, and uses the two side parts 862 to fix them. The space under the middle protrusion 861 provides an accommodation space for the screws used to fasten the bracket 86 and the lower fixing plate 85.

[0026] In this embodiment, the tension sprocket 95 is mounted on the inner side of the front main board 11 of the slider 1 through an L-shaped mounting frame 89. The L-shaped mounting frame 89 can ensure that the installed tension sprocket 95 and the first sprocket 93 and the second sprocket 94 are on the same plane, so that they can be connected together through the chain 96; other mounting frames such as T-shaped mounting frames can also be used in actual design.

[0027] In this embodiment, the output end of the direction converter 92 is at the same height as the mold height indicator 2. In this way, the flexible shaft 5 connecting the output end of the direction converter 92 and the mold height indicator 2 is always in a horizontal straight line state without any twisting or pulling.

[0028] In this embodiment, the output shaft 91 is a rotating shaft; the direction converter 92 adopts the existing technology; the first sprocket 93, the second sprocket 94, and the tensioning sprocket 95 all adopt existing sprockets.

Claims

1. A die height indicator transmission mechanism for a press, characterized in that: It includes an output shaft, a direction converter, a first sprocket, a second sprocket, a tension sprocket, and a chain. The output shaft is arranged horizontally, the first sprocket is connected to the first shaft end of the output shaft, the second sprocket is fixedly sleeved on the connecting shaft of the worm in the press, the tension sprocket is installed on the inner side of the front main board of the slider in the press, the transmission ratio of the first sprocket to the second sprocket is 1:1, the first sprocket, the second sprocket and the tension sprocket are connected by the chain, the second shaft end of the output shaft is connected to the input end of the direction converter, and the output end of the direction converter is connected to the die height indicator in the press through a linearly arranged flexible shaft; The tensioning sprocket is mounted on the inner side of the front main board of the slider through an L-shaped mounting frame, and the L-shaped mounting frame is used to ensure that the installed tensioning sprocket is on the same plane as the first sprocket and the second sprocket, and is connected together through the chain; The output end of the direction converter is at the same height as the mold height indicator, and the flexible shaft connecting the output end of the direction converter and the mold height indicator is always in a horizontal straight line state without any twisting or pulling.

2. The die height indicator transmission mechanism of a press machine according to claim 1, characterized in that: The transmission mechanism also includes a fixed seat, a collar, an end cover, an upper fixed plate, a lower fixed plate and a bracket, the output shaft coaxially passes through the fixed seat, the output shaft is connected to the inner side surface of the first end of the fixed seat through a first bearing, the output shaft is connected to the inner side surface of the second end of the fixed seat through a second bearing, the collar is sleeved on the outside of the output shaft and clamped between the first bearing and the second bearing, the end cover is connected to the second end head of the fixed seat, the second axial end of the output shaft is embedded in the inner axial end of the end cover and fixedly connected to the end cover, the outer axial end of the end cover is connected to the input end of the direction converter, the direction converter is fixed to the upper fixed plate, the upper fixed plate and the fixed seat are fixed to the lower fixed plate, the lower fixed plate is installed on the bracket, and the bracket is installed on the body of the slider in the press.

3. The die height indicator transmission mechanism of a press machine according to claim 2, characterized in that: The first end of the fixed seat has an annular limiting boss extending horizontally toward the center, the first bearing is limited by the annular limiting boss and the ring, an annular limiting plate is arranged between the inner side surface of the second end of the fixed seat and the output shaft, and the second bearing is limited by the annular limiting plate and the ring.

4. The die height indicator transmission mechanism of a press machine according to claim 2, characterized in that: An annular plug-in portion is arranged on the inner shaft end of the end cover, and the annular plug-in portion is inserted into the second end head of the fixing seat and abuts against the inner annular surface of the second end of the fixing seat.

5. The die height indicator transmission mechanism of a press machine according to claim 2, characterized in that: The two sides of the bracket are low and have a middle protrusion, the lower fixing plate is installed on the middle protrusion of the bracket, and the two side parts of the bracket are fixedly connected with the body of the slider.

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