TWI710419B - Lever type quick-dropping rod structure of band saw machine - Google Patents

Abstract

The present invention discloses a lever-type quick-drop bar structure of a band saw machine. The lever-type quick-drop bar structure is arranged in a bow mechanism of the band saw machine and includes an actuation switch and a sudden drop bar. The actuation switch is locked on the inner side wall of the saw bow mechanism and is triggered by an external force to output an actuation signal. The plunge rod is movably pivoted on the inner side wall of the saw bow mechanism, one end interacts with the actuation switch, and the other end normally protrudes from the lower end of the saw band of the saw bow mechanism, and is pushed up by the workpiece to be cut. The sudden drop lever forms a lever-like swing and deviates from the upper and lower movement path of the saw band. With the composition of the above-mentioned components, the movement path of the saw band can be avoided when the descent rod is actuated, avoiding the occupation of the preset space of the saw bow mechanism, and avoiding the lack of additional components of special specifications for the saw bow mechanism.

Description

Lever type quick lowering rod structure of band saw machine

The invention relates to a technical field related to processing machinery, in particular to a lever-type quick-down rod structure of a band saw machine.

Please refer to Figure 12, the structure of the band saw in the prior art generally includes a base body 91, a saw bow mechanism 92 for sawing, a saw bow mechanism 92 and the base body 91 are connected, and a saw bow mechanism 92 is used as a lifting mechanism 93 for controlling the sawing rate, a quick-lowering rod mechanism 94 provided on the saw bow mechanism 92, and a clamping seat 95 provided on the base body 91 for placing the workpiece A to be cut.

The quick drop lever 942 (or called the quick drop lever) of the aforementioned quick drop lever mechanism 94 is used to sense the positions of the saw band 922 and the workpiece A to be cut on the saw bow mechanism 92. The sharp drop lever 942 can be combined with the saw bow mechanism 92 The (saw band 922) moves up and down. When the saw bow mechanism 92 (saw band 922) and the quick-down rod mechanism 94 (the rapid-down rod 942) are drawn by the lifting mechanism 93 and move toward the workpiece A to be cut, the sharp-down rod The lower end of the 942 will first contact the workpiece A to be cut, and the workpiece A to be cut will lift the sharp drop rod 942 up, and touch the induction switch 944 of the quick drop rod mechanism 94 to reduce the moving (feeding) speed of the lifting mechanism 93.

The rapid lowering rod mechanism 94 allows the lifting mechanism 93 to move up and down the sawbow mechanism 92, and can perform high-speed movement to avoid lengthy waiting time. When the rapid lowering rod mechanism 94 (rapid down rod 942) is triggered by the workpiece A to be cut , The lifting mechanism 93 can return to the normal feeding speed.

Although the rapid lowering rod mechanism 94 of the previous technology can achieve the purpose of triggering the lifting mechanism 93 to switch the feed speed, it has other defects; according to the saw bow mechanism 92, the height limit of the retreat space 926 of the bow arm 924 is the maximum processing of the band saw However, because the plunge bar 942 is located in the retreat space 926 of the bow arm 924 of the saw bow mechanism 92, and the operating direction is the same as the saw band 922 of the saw bow mechanism 92 and the workpiece A to be cut, the dome of the retreat space 926 will become urgent Lowering the limit height of the rod 942, and then taking up the retreat space 926 due to its own accumulation, reduces the height of the dome, resulting in a reduction in the maximum processing capacity of the band saw.

In order to solve this problem, it is only necessary to increase the height of the dome of the concession space 926. In this way, when the manufacturer is prone to material preparation, it is necessary to prepare different specifications of materials and spare parts for different models of the concession space 926, resulting in material inventory pressure. And cost burden.

Therefore, it is necessary to improve how to overcome the shortcomings related to the quick-lowering mechanism in the previous technology and return the relevant components to the applicable specifications.

In view of the above-mentioned problems and deficiencies of the prior art, the main purpose of the present invention is to provide a lever-type quick-down lever structure for a band saw machine, which solves the above-mentioned deficiencies of the prior art through structural innovation and ingenuity.

According to the above objective of the present invention, the present invention proposes a lever-type quick-drop bar structure of a band saw machine. The lever-type quick-drop bar structure is arranged in a bow mechanism of the band saw. It includes an actuation switch and a sharp drop. Rod. The actuation switch is locked on the inner wall of the saw bow mechanism, and is triggered by an external force to output an actuation signal. The plunge rod is movably pivoted on the inner side wall of the saw bow mechanism, one end interacts with the actuation switch, and the other end normally protrudes from the lower end of the saw band of the saw bow mechanism, and is pushed up by the workpiece to be cut. The plunge rod forms a lever-like swing and deviates from the saw band up and down Movement path. With the composition of the above-mentioned components, the movement path of the saw band can be avoided when the descent rod is actuated, avoiding the occupation of the preset space of the saw bow mechanism, and avoiding the lack of additional components of special specifications for the saw bow mechanism.

10‧‧‧Band saw machine

11‧‧‧Base body

12‧‧‧Saw bow mechanism

124‧‧‧Saw Band

13‧‧‧Lifting mechanism

14‧‧‧Clip holder

15‧‧‧Controller

20‧‧‧Lever type quick-down rod structure

21‧‧‧Action switch

22‧‧‧Limit Block

23‧‧‧Dropping lever

231‧‧‧Head section

233‧‧‧Curved section

232‧‧‧tail boom section

234‧‧‧Pivot Seat

235‧‧‧First Wing

236‧‧‧Second Wing

2352‧‧‧First keyhole

2362‧‧‧Second keyhole

237‧‧‧Counterweight

24‧‧‧Pivot bolt set

241‧‧‧Self-lubricating bearing

242‧‧‧Pivot bolt

25‧‧‧Fine adjustment bolt group

252‧‧‧Fine adjustment nut

251‧‧‧Fine adjustment bolt

<Previous Skills>

91‧‧‧Base body

92‧‧‧Saw bow mechanism

93‧‧‧Lifting mechanism

94‧‧‧Quick drop mechanism

95‧‧‧Clip holder

A‧‧‧Workpiece to be cut

Figure 1 is a perspective view of an embodiment of the present invention.

Figure 2 is an exploded schematic view of the partial components of the embodiment shown in Figure 1.

Figure 3 is a schematic diagram of the partial components of the embodiment shown in Figure 2.

Figure 4 is a schematic diagram of the partial components of the embodiment shown in Figure 3.

Figure 5 is an exploded schematic view of partial components of the embodiment shown in Figure 4.

Figure 6 is a schematic partial cross-sectional view of the embodiment shown in Figure 4.

Figure 7 is a schematic diagram of the operation of the embodiment of the present invention (1).

Figure 8 is a schematic diagram of the operation of the embodiment of the present invention (2).

Figure 9 is a schematic diagram of the partial components of the embodiment shown in Figure 8.

Figure 10 is a schematic diagram of the operation of the embodiment of the present invention (3).

Figure 11 is a schematic diagram of the partial components of the embodiment shown in Figure 10.

Figure 12 is a schematic diagram of an embodiment of a band saw machine with prior art.

Hereinafter, please refer to the related drawings to further describe the embodiment of the lever-type quick-down lever structure of the band saw machine of the present invention. In order to facilitate the understanding of the embodiment of the present invention, the same components are described below with the same symbols.

Please refer to Figure 1, the structure of the band saw machine 10 (previous art) roughly includes a base body 11, a bow mechanism 12, and a lifting mechanism connected to the bow mechanism 12 for sawing (feeding) rate control 13. One is provided on the base body 11 The clamping base 14 for holding the workpiece A to be cut, and a controller 15 electrically connecting the sawbow mechanism 12 and the lifting mechanism 13.

Regarding the lever-type quick-dropping rod structure 20 of the present invention, please refer to Figures 1 to 6, which is set in the sawbow mechanism 12 and includes an actuation switch 21, a limit block 22, a sharp drop rod 23, and a pivot The plug group 24, and at least one fine adjustment plug group 25.

The above-mentioned actuation switch 21, please refer to Figs. 3 to 6, is locked at a preset position on the inner wall 122 of the saw bow mechanism 12, and is electrically connected to the controller 15, and is triggered by an external force to output an actuation signal.

The aforementioned limit block 22, please refer to Figures 3 to 6, which is locked at a predetermined position on the inner side wall 122 of the saw bow mechanism 12.

The above-mentioned sudden drop lever 23, please refer to Figures 3 to 6, is movably pivoted at a preset position on the inner wall 122 of the saw bow mechanism 12, interacts with the actuation switch 21 and is pushed by external force to form a lever-like swing. Make it deviate from the up and down movement path of the saw band 124 of the saw bow mechanism 12. The drop bar 23 has a head bar section 231, a tail bar section 232, a curved bar section 233, a pivot seat 234, a first wing 235, a second wing 236, and a counterweight 237.

The head section 231, the curved section 233, and the tail section 232 are sequentially connected in series and integrated. The curved bar section 233 has a slightly curved profile and further defines an activity space in the downward direction. The lower end of the head rod end 231 normally protrudes from the lower end of the saw band 124 of the saw bow mechanism 12.

The aforementioned pivot seat 234, please refer to Figure 5, is set at the junction of the curved rod section 231 and the tail section 232. It is a hollow tubular body. The head section 231 and the curved rod are adjusted by the tube length of the pivot seat 234. The distance between the section 233 and the tail section 232 and the inner wall surface 122 of the saw bow mechanism 12.

The aforementioned first (two) fins 235 (236) are respectively from the tail section 232 It extends to one side and corresponds to the actuation switch 21 and the limit block 22 respectively. In implementation, the first (second) flap 235 (236) optionally has a first (second) key hole 2352 (2362).

The aforementioned counterweight 237, as shown in FIG. 5, is fastened to the front rod section 231 so that the weight of the front rod section 231 is normally greater than the tail rod section 232. During implementation, the counterweight 237 can be optionally omitted.

The pivot bolt set 24, as shown in FIGS. 5 and 6, is inserted through the pivot seat 234 and then locked on the inner wall 122 of the saw bow mechanism 12 to pivotally connect the sudden drop lever 23. The pivot bolt group 24 includes a self-lubricating bearing 241 and a pivot bolt 242 extending through the self-lubricating bearing 241.

The fine adjustment bolt set 25, as shown in FIG. 5, includes a fine adjustment bolt 251 and a fine adjustment nut 252. The aforementioned fine adjustment bolt 251 is screwed to the first (second) wing 235 (236) and its first (second) locking hole 2352 (2362). The aforementioned fine adjustment nut 252 is screw-locked to the fine adjustment bolt 251 and abuts against the first (second) wing 235 (236). During implementation, the fine adjustment bolt set 25 can be optionally omitted.

Therefore, the foregoing is an introduction to the various components and assembly methods of the lever-type quick-down lever structure of a band saw machine provided by the present invention. Hereinafter, the operating characteristics of the embodiment of the present invention are introduced as follows.

First of all, please refer to Figures 7-11. Under normal conditions, because the head section 231 is heavier than the tail section 232, the descent lever 23 swings around the pivot seat 234 to allow the head The lower end surface of the rod section 231 normally protrudes from the lower end of the saw band 124 of the saw bow mechanism 12, and the tail rod section 232 or its first (second) wing 235 (236) presses against the actuation switch 21 (limit block 22).

The above-mentioned limit block 22 provides the abutment of the second fin 236 to withstand the force of the tail boom section 232. When the controller 15 triggers the lifting mechanism 13 to act, the actuation switch 21 is pressed against and outputs an actuation signal to the controller 15 , So that the controller 15 can make the lifting mechanism 13 high-speed traction saw bow mechanism 12 downward toward the workpiece A to be cut Direction movement.

After the head section 231 of the plunge rod 23 abuts against the workpiece A to be cut and is pushed by it (please refer to Figures 9 to 11), the plunge rod 23 takes the pivot seat 234 as the axis to form a lever type Swing to make the head section 23 sway to the side which deviates from the action direction of the sawbow mechanism 12, and the tail section 232 is synchronized away from the actuation switch 21 (limit block 22), so that the actuation switch 21 stops outputting the actuation signal, and the controller 15 The lifting mechanism 13 is caused to reduce the speed of the traction sawbow mechanism 12 due to no action signal.

Because the plunge rod 23 swings with a lever to swing the head rod section 231 and the curved rod section 233 toward the side away from the upper and lower movement paths of the saw band 124 of the saw bow mechanism 12, thereby avoiding occupying the reserved portion of the saw bow mechanism 12 The height of the dome can effectively overcome the lack of occupying the height of the dome in the previous art.

The above description is only the preferred embodiments of the present invention. It is intended to clarify the characteristics of the present invention and is not intended to limit the scope of the embodiments of the present invention. Those skilled in the art make equal changes based on the present invention. , And changes well known to those skilled in the art should still fall within the scope of the present invention.

10‧‧‧Band saw machine

11‧‧‧Base body

12‧‧‧Saw bow mechanism

13‧‧‧Lifting mechanism

14‧‧‧Clamping seat

15‧‧‧Controller

20‧‧‧Lever type quick-down rod structure

A‧‧‧Workpiece to be cut

Claims (9)

A lever-type quick-lowering rod structure of a band saw machine is set in a bow mechanism of a band saw machine, and includes: an actuation switch, which is locked on the inner side wall of the bow mechanism, and is triggered by an external force to output an actuation signal; And a descent rod is movably pivoted on the inner side wall of the saw bow mechanism, one end interacts with the actuation switch, and the other end normally protrudes from the lower end of the saw band of the saw bow mechanism and is driven by the band saw machine The upper workpiece to be cut is pushed up to form a lever-like swing, so that it deviates from the upper and lower movement path of the saw band. For example, the lever-type quick-down bar structure of the band saw machine described in item 1 of the scope of patent application, wherein the rapid-down bar has a head bar section, a curved bar section and a tail bar section which are sequentially connected in series; the head bar section The normal state protrudes from the downward end of the saw band, and the tail rod section interacts with the actuation switch. For example, the lever-type quick-down bar structure of the band saw machine described in item 2 of the scope of patent application, wherein the head bar section is further locked with a counterweight. For example, the lever-type quick-down lever structure of the band saw machine described in item 2 of the scope of patent application, wherein the tail lever section further extends to one side to form a first wing which interacts with the actuation switch. For example, the lever-type quick-down lever structure of the band saw machine described in item 4 of the scope of patent application, wherein the first wing has a first locking hole to provide a fine adjustment bolt set for locking. As described in item 5 of the scope of patent application, the lever-type quick-down bar structure of the band saw, wherein the tail bar section further extends to one side to form a second wing, which is selectively pressed A limit block arranged on the inner side wall of the saw bow mechanism. For example, the lever-type quick-down lever structure of the band saw machine described in item 6 of the scope of patent application, wherein the second wing has a second locking hole to provide a fine adjustment bolt set for locking. For example, the lever-type quick-down lever structure of the band saw machine described in item 2 of the scope of patent application, wherein a pivot seat is further provided between the curved lever section and the tail lever section. For example, the lever-type quick-down lever structure of the band saw machine described in item 8 of the scope of patent application, wherein the pivotal seat provides a pivotal bolt set to pass through and lock on the inner side wall of the saw bow mechanism; the pivotal bolt set includes A self-lubricating bearing and a pivot bolt extending through the self-lubricating bearing.

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