CN107876879A - Modified form band sawing machine is used in a kind of mould production - Google Patents

Abstract

The invention discloses an improved band saw machine for mold production, which includes a machine table, a bar clamping device, a chip removal device, a tension adjustment device, two columns, a driving wheel, a driven wheel, a motor, a saw band, and a driving cylinder and the tool holder, the machine platform is provided with two front and rear columns, the two columns are provided with a tool holder, the machine platform is provided with a driving cylinder for driving the knife holder to move up and down, and the front end of the knife holder is provided with There is a driving wheel and a motor driving the driving wheel to rotate, the rear end of the knife holder is provided with a tension adjustment device, the tension adjustment device is provided with a driven wheel, the driving wheel and the driven wheel are provided with a saw band, the The tool holder is equipped with chips on the saw blade tip of the saw band, and the machine table is equipped with a bar clamping device. Compared with the prior art, it can fix the bar with good reliability, easy to use, and good chip removal effect. , The brush has a long service life and automatically tensions the saw band.

Description

An improved band saw machine for mold production

【Technical field】

The invention relates to the technical field of a band saw machine, in particular to the technical field of an improved band saw machine for mold production.

【Background technique】

In the production process of the mold, it is generally necessary to cut the metal rod material used for mold production into a certain length through a band saw machine. In the prior art, the clamping device of the band saw machine fixes the metal rod material through two clamping seats Press respectively on the front and rear sides of the metal rod material to achieve clamping and fixing, but there is no pressing mechanism on the upper side of the metal rod material. When the metal rod material remains to a certain amount, the clamping seat clamps the metal rod material. , When subjected to the cutting force of the saw blade, it slides out of the fixed fixture of the band saw machine tool, especially the hollow rod material, which is easily deformed if the clamp is too tight.

When a metal material is cut with a band saw blade, chips may adhere to tooth tips of the teeth of the band saw blade, resulting in built-up edge. When the built-up edge occurs, the cut surface becomes thicker repeatedly, and the built-up edge falls off from the tip of the tooth, and depending on the case, the edge may be damaged by the impact on the tip of the tooth. Therefore, the chips adhering to the band saw blade are removed by the rotating brush rotating in a direction perpendicular to the traveling direction of the band saw blade.

However, the tooth height dimensions of the plurality of saw teeth of the band saw blade and the tooth pitch of each saw tooth are not necessarily constant, and the arrangement relationship between the straight teeth and the left and right staggered teeth is not constant, so the wear of the above-mentioned rotating brush is not necessarily constant. becomes constant, and sometimes becomes a polygonal shape due to partial wear, for example. Therefore, when the shavings adhering to the band saw blade are removed by the rotating brush, the rotating brush may move toward or away from the band saw blade (the overlapping amount of the rotating brush with respect to the band saw blade becomes larger or smaller). The direction of the band saw) vibrates, and sometimes the rotating brush bounces in a direction away from the band saw blade due to interference between the rotating brush and the band saw blade. As a result, the chip removal effect is poor, and the service life of the brush is short.

At present, on a general horizontal band sawing machine, the saw band tensioning is realized by using the saw band tensioning handwheel to move the tensioning saw wheel through a screw rod and a sliding seat. When the saw band tensioning device in the prior art is in use, the lock nut that fixes the tensioning saw wheel must be loosened first, then the saw band tensioning hand wheel is turned, and the tensioning saw wheel is moved through the screw mandrel and the sliding seat. It is cumbersome to adjust, and it cannot be automatically tensioned. And to determine whether the tension of the saw band is appropriate, the operator mainly adjusts the tension of the saw band based on experience, which is very random. It is generally difficult for inexperienced operators to adjust the tension of the saw band appropriately.

【Content of invention】

The purpose of the present invention is to solve the problems in the prior art, and propose an improved band saw machine for mold production, which can fix the bar with good reliability, easy to use, good chip removal effect, long service life of the brush, and automatic sawing The belt is tensioned.

In order to achieve the above object, the present invention proposes an improved band saw machine for mold production, including a machine table, a bar clamping device, a chip removal device, a tension adjustment device, two columns, a driving wheel, a driven wheel, a motor, Saw band, driving cylinder and tool holder, the machine table is provided with two front and rear columns, the two columns are provided with a knife holder, and the machine table is provided with a driving cylinder for driving the knife holder to move up and down, the The front end of the knife rest is provided with a driving wheel and a motor that drives the driving wheel to rotate, and the rear end of the knife rest is provided with a tension adjusting device, and the tension adjusting device is provided with a driven wheel, and the driving wheel and the driven wheel are provided with Saw band, the knife holder is provided with chips on the saw blade tip of the saw band, the machine table is provided with a bar clamping device, and the bar clamping device includes two support seats, a frame, and a second A shaft body, a first clamping mechanism, two first gears, a transmission mechanism, a third gear, an adjustment dial, a second clamping mechanism, a screw body, a seat body, two supporting bodies, two first slide holes and Two second slide holes, the frame body is fixedly installed on the machine table through the support base, the support base is provided with the first slide hole, the upper end of the screw body is rotatably connected with the lower end of the frame body, so The lower end of the screw body is provided with a third gear, the front support seat is pierced with a rotatably connected first shaft body, and the rear end of the first shaft body is provided with a first gear meshed with the third gear , the front end of the first shaft body is provided with an adjustment dial, the first shaft body between the adjustment dial and the support seat in front is provided with a first gear, and the front body and the rear body of the frame are provided with There is a second sliding hole, the second sliding hole in the front is provided with the first clamping mechanism, the second sliding hole in the rear is provided with the second clamping mechanism, the first gear in the front is connected with the first clamping mechanism through the transmission mechanism connection, the screw body is covered with a threaded seat body, the two ends of the seat body pass through two first sliding holes respectively, and the front end of the seat body is connected with the first clamping mechanism through a support body , the rear end of the seat body is connected with the second clamping mechanism through a support body, the chip removal device includes a first support, a track, a sliding seat, a first pneumatic cylinder and a chip removal mechanism, the first support The side of the upper end of the seat is provided with a track, the track is equipped with a sliding seat, the sliding seat is provided with a chip removal mechanism, and the front end of the track is provided with a first pneumatic cylinder that pushes the sliding seat to move backward. The debris removal mechanism includes a second support, a third support, a second pneumatic cylinder, a pressing body, a first spring, a first plug body, a plug sleeve, a fourth support, a support rod, a brush and a support wheel , the sliding seat is provided with a second support, the upper end of the second support is provided with a third support, the third support is provided with a second pneumatic cylinder, the piston of the second pneumatic cylinder The lower end of the rod is provided with a fourth support, the lower end of the fourth support is provided with a socket sleeve, the first socket body is provided in the socket sleeve, and the lower end of the first socket body is provided with a pressing The tight body, the first spring with two ends fixedly connected with the fourth support and the pressing body is sleeved on the socket sleeve, and the rear end of the fourth support is provided with a support rod, and the support rod The lower end of the vertical body is provided with a brush, and the second support is provided with a support for supporting the upper layer of the saw band just below the compacting body. The support wheel, the fourth support is provided with a positioning body pierced on the third support, and the tension adjustment device includes a frame body, a hollow shaft body, an adjustment dial, a constant force spring, two slotted holes, two a first block seat, a slide rail, a sliding seat body, a connecting mechanism, a first connecting shaft body, a second connecting shaft body, a second block seat and a fastening nut, and the front end of the frame body is fixedly connected with the tool holder The slide rail is equipped with a sliding seat body, the rear end of the sliding seat body is provided with a second connecting shaft body, the rear body of the frame body is provided with a hollow shaft body, and the hollow shaft body The shaft body is provided with a threaded adjustment dial on the outside of the rear body of the frame body, the front end outer ring surface of the hollow shaft body is provided with a second stop seat, and the upper and lower ends of the hollow shaft body are provided with slotted holes , the hollow shaft body is provided with a first connecting shaft body whose front end passes through the front body of the frame body, and the first connecting shaft body is provided with a first stop seat on the outside of the slot hole, and the second stop seat and A constant force spring is sheathed on the hollow shaft body between the first retaining seats, and the first connecting shaft body is provided with a fastening nut in front of the frame body, and the front end of the first connecting shaft body is connected to the The rear ends of the two connecting shaft bodies are fixedly connected.

Preferably, the first clamping mechanism includes a first sliding seat, several third shafts, several first bearings, a second shaft, a sleeve, a first base, several first clamping bodies, second gears and Positioning rod, the second sliding hole in the front is provided with a first sliding seat, and the front and rear ends of the first sliding seat are provided with two third shafts, and the two ends of the third shaft are provided with conflicting The first bearing on the front body of the frame body, the second shaft body that is rotatably connected is pierced on the first sliding seat, the front end of the second shaft body is provided with a second gear, and the second shaft body The rear end of the body is covered with a threaded sleeve body, the rear end of the sleeve body is provided with a first base, and the rear end of the first base is provided with first clamping bodies arranged evenly at intervals. The rear end of the first clamping body is provided with a V-shaped groove, and the front end of the first base is provided with a positioning rod pierced on the first sliding seat, and the first sliding seat is fixedly connected with the supporting body in front.

Preferably, the second clamping mechanism includes a second sliding seat, several fourth shaft bodies, several second bearings, a first connecting body, a second base and several second clamping bodies, and the second sliding hole at the rear A second sliding seat is provided, and two fourth shaft bodies are provided at the front and rear ends of the second sliding seat, and the two ends of the fourth shaft body are provided with a second Bearing, the front end of the second sliding seat is provided with a first connecting body, the front end of the first connecting body is provided with a second base, and the front end of the second base is provided with a first clamping body alternately arranged Two clamping bodies, the front end of the second clamping body is provided with a V-shaped groove, and the second sliding seat is fixedly connected with the support body at the rear.

Preferably, the transmission mechanism includes a fifth shaft body, two fourth gears, a second connecting body, a third connecting body, a connecting sleeve, a groove and an anti-rotation protrusion, and the outer side of the front body of the frame body A second connecting body is provided, the front end of the second connecting body is provided with a rotatably connected fifth shaft, and the lower end of the fifth shaft is provided with a fourth gear meshed with the first gear in front, The upper end of the fifth shaft is covered with a connecting sleeve, the lower end of the connecting sleeve is provided with a groove, and the fifth shaft is provided with an anti-rotation protrusion in the groove. A fourth gear meshingly connected with the second gear is provided at the upper end, and a third connecting body is provided at the front end of the front supporting body, and the front end of the third connecting body is rotatably connected with the connecting sleeve body.

Preferably, the gear ratio between the first gear and the fourth gear is: 1:1, the gear ratio between the first gear and the third gear is: 1:1, and the gear ratio between the fourth gear and the second gear is: : 1:1, the distance that the screw body rotates a week to drive the seat body is half of the distance that the second shaft rotates to drive the sleeve body to move. When the screw body rotates to drive the seat body to move upward, the second shaft The rotation of the body drives the sleeve body to move forward.

Preferably, both the first pneumatic cylinder and the second pneumatic cylinder are high-speed cylinders, and the piston rod of the first pneumatic cylinder can be retracted under the push of the sliding seat.

Preferably, the rear end of the track is provided with a blocking body, and the blocking body is provided with an inductor for sensing the sliding seat.

Preferably, the lower end of the vertical body of the support rod is provided with a fifth support, the front end of the fifth support is provided with a sixth support, and the rear end of the fifth support is provided with a seventh support , the seventh bearing is pierced with a sliding body, the rear end of the sliding body is provided with a handle, the front end of the sliding body is provided with a baffle body, and the front end of the baffle body is provided with a brush inserted into the brush The second inserting body of the seat, the sliding body between the blocking body and the seventh support is covered with a second spring, the upper end of the brush seat of the brush is attached to the lower end of the fifth support, The lower end of the pressing body slightly exceeds the lower end of the brush, and the length of the hair bundle of the brush is 4-7 mm.

Preferably, the connecting mechanism includes two rotating seats, a third connecting shaft body, two slotted holes, a manual lever, a clamp and two fourth connecting shaft bodies, and the front end of the first connecting shaft body passes through There is a third connecting shaft body, the upper and lower ends of the third connecting shaft body are provided with rotating seats, the rotating seats are provided with slot-shaped holes, and the rear end of the second connecting shaft body is in the two grooves. A fourth connecting shaft body is provided in the shaped holes, and the front end of the manual lever is connected to the rotating seat above for up and down rotation. The first connecting shaft body is provided with a deck for fixing the manual lever, and the fourth connecting shaft body When the connecting shaft is located at the lower end of the slotted hole, the slotted hole is in a vertical state, and the deck is provided with a draw-in slot matched with the manual lever, and the slot width of the draw-in slot is slightly smaller than the diameter of the manual lever.

Preferably, a fifth connecting shaft passing through the slot-shaped hole and inserted into the first connecting shaft is integrally formed on the first blocking seat, and the fifth connecting shaft is welded to the first connecting shaft.

Beneficial effects of the present invention: the first clamping body and the second clamping body are alternately arranged in the present invention, and the front end of the second clamping body is provided with a V-shaped groove, which is changed from the traditional two sides to four sides clamping, and when different When the diameter of the bar is placed on the shelf, it is not necessary to adjust the height of the shelf, and it can also be clamped on four sides; when the piston rod of the second pneumatic cylinder is stretched out, the pressing body is first pressed against the saw At this time, the saw band is clamped by the pressing body and the support wheel, the saw band drives the chip removal mechanism to move together, and then presses the brush against the saw teeth of the saw band to brush off the chips on the saw teeth, and then the second pneumatic The piston rod of the cylinder is retracted, and then the first pneumatic cylinder pushes the sliding seat to drive the chip removal mechanism back to its position, ready to work again. The brush of this application moves synchronously with the saw band when removing chips, and there is no traditional rotary brush and saw blade. The friction of the belt and the jumping of the rotating brush; the rotation of the adjustment dial drives the hollow shaft body to move backward, the hollow shaft body drives the second gear seat to compress the constant force spring, and the first gear seat drives the first connecting shaft body to move backward through the action of the constant force spring. After the movement, the first connecting shaft drives the second connecting shaft to move backward through the connecting mechanism, the second connecting shaft drives the sliding seat to move, and the saw band wheel installed on the sliding seat moves backward to realize the adjustment of the saw band. The tension, and through the cooperation of the fastening nut and the connecting mechanism, it is convenient to disassemble and install the saw band. Compared with the existing technology, it can fix the bar with good reliability, easy to use, good chip removal effect, and long service life of the brush. Long, automatically tensions the saw band.

The features and advantages of the present invention will be described in detail with reference to the accompanying drawings.

【Description of drawings】

Fig. 1 is a structural representation of an improved band saw machine for mold production of the present invention;

Fig. 2 is the structural representation of chip removing device;

Fig. 3 is a schematic structural view of the chip removal mechanism;

Fig. 4 is a schematic structural view of a rod clamping device;

Fig. 5 is a schematic structural view of the first clamping body arranged on the first base;

Fig. 6 is a schematic structural view of the tension adjusting device;

Fig. 7 is a top view of the slot-shaped hole arranged on the rotating seat.

In the figure: 20-machine, 21-bar clamping device, 22-chip removal device, 23-tension adjustment device, 24-column, 25-driving wheel, 26-driven wheel, 27-motor, 28-saw band , 29-drive cylinder, 210-knife holder, 211-support seat, 212-frame, 213-first shaft, 214-first clamping mechanism, 215-first gear, 216-transmission mechanism, 217-the first Three gears, 218-adjusting turntable, 219-second clamping mechanism, 2110-screw body, 2111-seat body, 2112-support body, 2113-first slide hole, 2114-second slide hole, 2141-first slide Seat, 2142-third shaft, 2143-first bearing, 2144-second shaft, 2145-sleeve, 2146-first base, 2147-first clamping body, 2148-second gear, 2149-positioning Rod, 2161-fifth shaft body, 2162-fourth gear, 2163-second connecting body, 2164-third connecting body, 2165-connecting sleeve, 2166-groove, 2167-anti-rotation protrusion, 2191-the first Two sliding seats, 2192-fourth shaft body, 2193-second bearing, 2194-first connecting body, 2195-second base, 2196-second clamping body, 221-first support, 222-track, 223 -sliding seat, 224-first pneumatic cylinder, 225-dust removal mechanism, 226-blocking body, 227-inductor, 2251-second support, 2252-third support, 2253-second pneumatic cylinder, 2254- Compression body, 2255-first spring, 2256-first socket body, 2257-socket sleeve, 2258-fourth support, 2259-support rod, 22510-hair brush, 22511-support wheel, 22512-positioning body . 231-frame body, 232-hollow shaft body, 233-adjusting dial, 234-constant force spring, 235-slot hole, 236-first stop seat, 237-sliding rail, 238-sliding seat body, 239-connecting mechanism, 2310-first connecting shaft body, 2311-second connecting shaft body, 2312-second stop seat, 2313-fastening nut, 2391-rotary seat, 2392-third connecting shaft body, 2393-slotted hole, 2394- Manual lever, 2395-cassette, 2396-the fourth connecting shaft, 2361-the fifth connecting shaft.

【Detailed ways】

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, an improved band saw machine for mold production according to the present invention includes a machine table 20, a bar clamping device 21, and a chip removal device 22. Tension adjustment device 23, two columns 24, driving wheel 25, driven wheel 26, motor 27, saw band 28, driving cylinder 29 and knife rest 210, and the machine platform 20 is provided with two columns 24 before and after, so The two columns 24 are provided with a knife rest 210, and the machine table 20 is provided with a drive cylinder 29 for driving the knife rest 210 to move up and down. Motor 27, the rear end of described knife rest 210 is provided with tension adjustment device 23, and described tension adjustment device 23 is provided with driven wheel 26, and described driving wheel 25 and driven wheel 26 are provided with saw band 28, and described knife The frame 210 is provided with the swarf on the sawtooth tip of the saw band 28, and the machine table 20 is provided with a bar clamping device 21, and the bar clamping device 21 includes two support seats 211, a frame body 212, The first shaft body 213, the first clamping mechanism 214, two first gears 215, the transmission mechanism 216, the third gear 217, the adjustment dial 218, the second clamping mechanism 219, the screw body 2110, the seat body 2111, two Support body 2112, two first slide holes 2113 and two second slide holes 2114, the frame body 212 is fixedly installed on the machine platform 20 through the support base 211, and the support base 211 is provided with first slide holes 2113, the upper end of the screw body 2110 is rotatably connected to the lower end of the frame body 212, the lower end of the screw body 2110 is provided with a third gear 217, and the front support seat 211 is pierced with a rotatably connected first shaft body 213, the rear end of the first shaft body 213 is provided with a first gear 215 meshed with the third gear 217, and the front end of the first shaft body 213 is provided with an adjustment dial 218, and the adjustment dial 218 is connected to the front A first gear 215 is provided on the first shaft body 213 between the supporting bases 211, and a second sliding hole 2114 is provided on the front body and the rear body of the frame body 212, and a second sliding hole 2114 is provided in the front. There is a first clamping mechanism 214, a second clamping mechanism 219 is arranged in the second sliding hole 2114 at the rear, the first gear 215 in the front is connected with the first clamping mechanism 214 through a transmission mechanism 216, and on the screw body 2110 A threaded seat body 2111 is sleeved, and the two ends of the seat body 2111 respectively pass through two first sliding holes 2113, and the front end of the seat body 2111 is connected with the first clamping mechanism 214 through a support body 2112, The rear end of the seat body 2111 is connected to the second clamping mechanism 219 through a support body 2112, and the chip removal device 22 includes a first support 221, a track 222, a sliding seat 223, a first pneumatic cylinder 224 and a chip removal device. Mechanism 225, the upper end side of the first support 221 is provided with a track 222, and a sliding seat 223 is fitted on the track 222, and the sliding seat 22 3 is provided with a chip removal mechanism 225, and the front end of the track 222 is provided with a first pneumatic cylinder 224 that pushes the sliding seat 223 to move backward. The chip removal mechanism 225 includes a second support 2251, a third support 2252, The second pneumatic cylinder 2253, pressing body 2254, first spring 2255, first socket body 2256, socket sleeve 2257, fourth support 2258, support rod 2259, hair brush 22510 and support wheel 22511, the sliding seat 223 is provided with a second support 2251, the upper end of the second support 2251 is provided with a third support 2252, and the third support 2252 is provided with a second pneumatic cylinder 2253, and the second pneumatic cylinder 2253 The lower end of the piston rod is provided with a fourth support 2258, and the lower end of the fourth support 2258 is provided with a socket sleeve 2257, and a first socket body 2256 is arranged inside the socket sleeve 2257, and the first socket The lower end of the connecting body 2256 is provided with a pressing body 2254, and the socket sleeve 2257 is sleeved with a first spring 2255 whose two ends are respectively fixedly connected with the fourth support 2258 and the pressing body 2254, and the fourth support The rear end of 2258 is provided with support rod 2259, and the lower end of the vertical body of described support rod 2259 is provided with hairbrush 22510, and described second support 2251 is provided with support saw band 28 right below pressing body 2254. The support wheel 22511 of the upper belt body, the fourth support 2258 is provided with a positioning body 22512 pierced on the third support 2252, and the tension adjustment device 23 includes a frame body 231, a hollow shaft body 232, an adjustment dial 233, constant force spring 234, two slotted holes 235, two first block seats 236, slide rail 237, sliding seat body 238, connecting mechanism 239, first connecting shaft body 2310, second connecting shaft body 2311, second Blocking seat 2312 and fastening nut 2313, the front end of described frame body 231 is provided with the slide rail 237 that is fixedly connected with knife rest 210, and described slide rail 237 is equipped with slide seat body 238, and the slide seat body 238 The rear end is provided with a second connecting shaft body 2311, and the rear body of the frame body 231 is pierced with a hollow shaft body 232, and the hollow shaft body 232 is provided with a screw-connected adjustment dial outside the rear body of the frame body 231 233, the front end outer ring surface of the hollow shaft body 232 is provided with a second stop seat 2312, the upper and lower ends of the hollow shaft body 232 are provided with slot holes 235, and the front end of the hollow shaft body 232 is provided with a front end Through the first connecting shaft body 2310 of the front body of the frame body 231, the first connecting shaft body 2310 is provided with a first stop seat 236 on the outside of the slot hole 235, and the second stop seat 2312 and the first stop seat The hollow shaft body 232 between 236 is provided with a constant force spring 234, the first connecting shaft body 2310 is provided with a fastening nut 2313 in front of the frame body 231, and the front end of the first connecting shaft body 2310 is connected by The mechanism 239 is fixedly connected with the rear end of the second connecting shaft body 2311, and the first clamping The mechanism 214 includes a first sliding seat 2141, a number of third shaft bodies 2142, a number of first bearings 2143, a second shaft body 2144, a sleeve body 2145, a first base 2146, a number of first clamping bodies 2147, a second gear 2148 and The positioning rod 2149, the second sliding hole 2114 in the front is provided with a first sliding seat 2141, the front and rear ends of the first sliding seat 2141 are provided with two third shafts 2142, the third shaft 2142 Both ends are provided with a first bearing 2143 that is in contact with the front body of the frame body 212, and a second shaft body 2144 that is rotatably connected is pierced on the first sliding seat 2141, and the front end of the second shaft body 2144 A second gear 2148 is provided, and the rear end of the second shaft body 2144 is covered with a threaded casing 2145, and the rear end of the casing 2145 is provided with a first base 2146, and the first base 2146 The rear end is provided with first clamping bodies 2147 evenly arranged at intervals, the rear end of the first clamping body 2147 is provided with a V-shaped groove, and the front end of the first base 2146 is provided with a first sliding seat The positioning rod 2149 on the 2141, the first sliding seat 2141 is fixedly connected with the front support body 2112, and the second clamping mechanism 219 includes the second sliding seat 2191, several fourth shaft bodies 2192, and several second bearings 2193 , the first connecting body 2194, the second base 2195 and a number of second clamping bodies 2196, the second sliding hole 2114 at the rear is provided with a second sliding seat 2191, and the front and rear ends of the second sliding seat 2191 are provided with Two fourth shaft bodies 2192, both ends of the fourth shaft body 2192 are provided with second bearings 2193 that interfere with the rear body of the frame body 212, and the front end of the second sliding seat 2191 is provided with a first connection Body 2194, the front end of the first connecting body 2194 is provided with a second base 2195, the front end of the second base 2195 is provided with a second clamping body 2196 interlaced with the first clamping body 2147, the second The front end of the clamping body 2196 is provided with a V-shaped groove, the second sliding seat 2191 is fixedly connected to the support body 2112 at the rear, and the transmission mechanism 216 includes a fifth shaft body 2161, two fourth gears 2162, a second connection Body 2163, the third connecting body 2164, connecting sleeve body 2165, groove 2166 and anti-rotation protrusion 2167, the outer side of the front body of the frame body 212 is provided with a second connecting body 2163, the second connecting body 2163 The front end is provided with a rotatably connected fifth shaft body 2161, and the lower end of the fifth shaft body 2161 is provided with a fourth gear 2162 meshingly connected with the first gear 215 in front, and the upper end of the fifth shaft body 2161 covers There is a connection sleeve 2165, the lower end of the connection sleeve 2165 is provided with a groove 2166, the fifth shaft 2161 is provided with an anti-rotation protrusion 2167 in the groove 2166, and the upper end of the connection sleeve 2165 is provided with There is a fourth gear 2162 meshingly connected with the second gear 2148, the support body 2 at the front The front end of 112 is provided with a third connecting body 2164, the front end of the third connecting body 2164 is rotatably connected to the connecting sleeve body 2165, and the gear ratio between the first gear 215 and the fourth gear 2162 is: 1:1, so The gear ratio between the first gear 215 and the third gear 217 is: 1:1, the gear ratio between the fourth gear 2162 and the second gear 2148 is: 1:1, and the screw body 2110 rotates once to drive the seat body 2111 to move The distance is half of the distance that the second shaft body 2144 rotates once to drive the sleeve body 2145 to move. When the screw body 2110 rotates to drive the seat body 2111 to move upward, the second shaft body 2144 rotates to drive the sleeve body 2145 to move forward. The first pneumatic cylinder 224 and the second pneumatic cylinder 2253 are both high-speed cylinders, the piston rod of the first pneumatic cylinder 224 can be retracted under the push of the sliding seat 223, and the rear end of the track 222 is provided with a blocking body 226 , the blocking body 226 is provided with an inductor 227 for sensing the sliding seat 223, the lower end of the vertical body of the support rod 2259 is provided with a fifth support 22591, and the front end of the fifth support 22591 is provided with a sixth Support 22592, the rear end of the fifth support 22591 is provided with a seventh support 22593, the seventh support 22593 is pierced with a sliding body 22594, and the rear end of the sliding body 22594 is provided with a handle 22595, The front end of the sliding body 22594 is provided with a stopper 22596, and the front end of the stopper 22596 is provided with a second inserting body 22597 inserted into the brush seat of the brush 22510, between the stopper 22596 and the seventh support 22593 The sliding body 22594 in between is covered with a second spring 22598, the upper end of the brush seat of the brush 22510 is attached to the lower end of the fifth support 22591, and the lower end of the pressing body 2254 is slightly beyond the brush 22510 At the lower end, the hair bundle length of the brush 22510 is 4 to 7 millimeters, and the connecting mechanism 239 includes two rotating seats 2391, a third connecting shaft body 2392, two slotted holes 2393, a manual lever 2394, and a card seat 2395 and two fourth connecting shafts 2396, the front end of the first connecting shaft 2310 is pierced with a third connecting shaft 2392, and the upper and lower ends of the third connecting shaft 2392 are provided with rotating seats 2391, so The rotating seat 2391 is provided with slotted holes 2393, the rear end of the second connecting shaft 2311 is provided with a fourth connecting shaft 2396 in the two slotted holes 2393, and the front end of the manual lever 2394 is connected to the The rotating seat 2391 above is used to rotate up and down. The first connecting shaft 2310 is provided with a card seat 2395 for fixing the manual lever 2394. When the fourth connecting shaft 2396 is located at the lower end of the grooved hole 2393, the The groove-shaped hole 2393 is in a vertical state, and the card seat 2395 is provided with a card slot matched with the manual lever 2394. The width of the notch of the card slot is slightly smaller than the diameter of the manual lever 2394, and the first block seat 236 is integrated A fifth connecting shaft body 2361 is molded through the slot-shaped hole 2393 and inserted into the first connecting shaft body 2310 , and the fifth connecting shaft body 2361 is welded to the first connecting shaft body 2310 .

Working process of the present invention:

During the working process of an improved band saw machine for mold production in the present invention, the clockwise rotation of the adjusting dial 218 drives the first shaft body 213 to rotate, and the first shaft body 213 drives the two first gears 215 to rotate, and the rear first gear 215 drives the screw body 2110 to rotate through the third gear 217, the screw body 2110 drives the seat body 2111 to move downward, and the seat body 2111 drives the first clamping mechanism 214 and the second clamping mechanism 219 to move downward through the two supporting bodies 2112 respectively , while the first gear 215 in the front drives the fifth shaft 2161 to rotate through the fourth gear 2162 below, the fifth shaft 2161 drives the connecting sleeve 2165 to rotate through the anti-rotation protrusion 2167, and the connecting sleeve 2165 passes through the fourth gear above The cooperation between the gear 2162 and the second gear 2148 drives the second shaft body 2144 to rotate, the second shaft body 2144 drives the sleeve body 2145 to move backward, and the sleeve body 2145 drives the first clamping body 2147 to move backward through the first base 2146 until Clamp the bar material; start the motor 27 to drive the driving wheel 25 to rotate and drive the saw band 28 to move, and then start the piston rod of the driving cylinder 29 to retract and drive the knife rest 23 to move downward, and the knife rest 23 is driven by the driving wheel 25 and the driven wheel 26 The downward movement of the saw band 28 cuts the bar.

During the working process of the chip removal device, the piston rod of the second pneumatic cylinder 2253 is started to stretch out to drive the fourth support 2258 to move downward, and the fourth support 2258 respectively drives the pressing body 2254 and the support rod 2259 through the first spring 2255 and the The brush 22510 moves downward, and the pressing body 2254 presses the saw band against the support wheel 22511. When the saw band is pressed against the support wheel 22511, the chip removal mechanism 225 will move together with the saw band and pass through the sliding seat 223 retracts the piston rod of the first pneumatic cylinder 224, while the piston rod of the second pneumatic cylinder 2253 continues to stretch out, and the fourth support 2258 moves closer to the pressing body 2254 and compresses the first spring 2255. At the same time, the fourth support The seat 2258 drives the brush 22510 to continue to press against the saw teeth of the saw band through the support rod 2259, the brush 22510 brushes off the chips on the saw teeth, and then the piston rod of the second pneumatic cylinder 2253 retracts, driving the brush 22510 and the pressing body 2254 After returning to the position, the piston rod of the first pneumatic cylinder 224 stretches out and drives the chip removal mechanism 225 to move backward through the sliding seat 223. When the sensor 227 senses the sliding seat 223, the first pneumatic cylinder 224 stops the piston rod from stretching out, and at the same time Start the piston rod of the second pneumatic cylinder 2253 again to stretch out to remove the swarf. In order to avoid missing brushes, the working speed of the swarf removal device of the present application and the length of the hair brush 22510 should be well controlled.

During the working process of the tension adjusting device, rotating the adjusting dial 233 drives the hollow shaft body 232 to move backward, and the hollow shaft body 232 drives the second gear seat 2312 to compress the constant force spring 234, and the compressed constant force spring 234 is opposite to the first gear seat 236 The backward force makes the first stop 236 move backward, the first stop 236 drives the first connecting shaft 2310 to move backward, and the first connecting shaft 2310 drives the second connecting shaft 2311 to move backward through the connecting mechanism 239 , the second connecting shaft body 2311 drives the sliding seat body 238 to move, and the driven wheel 26 installed on the sliding seat body 238 moves backward to realize the tensioning of the saw band.

When the saw band needs to be disassembled, turn the fastening nut 2313 to move backward until it touches the front body of the frame body 231, then pull the manual lever 2394 upwards until it is removed from the slot of the clamp 2395, and then pull it counterclockwise The manual lever 2394 drives the rotating seat 2391 to rotate, and the rotating seat 2391 drives the second connecting shaft body 2311 to move forward through the cooperation of the grooved hole 2393 and the fourth connecting shaft body 2396, and the second connecting shaft body 2311 drives the sliding seat body 238 to move forward. Before moving, the driven wheel 26 installed on the sliding seat body 238 moves forward to release the tension on the saw band, and then the saw band can be taken off; Turn the manual lever 2394 with the hour hand to drive the rotating seat 2391 to rotate, and the rotating seat 2391 drives the second connecting shaft 2311 to move backward through the cooperation of the grooved hole 2393 and the fourth connecting shaft 2396, and the second connecting shaft 2311 drives the sliding seat 238 moves backward, and the driven wheel 26 installed on the sliding seat body 238 moves backward until the fourth connecting shaft body 2396 is located at the lower end of the grooved hole 2393, and then pulls the manual lever 2394 downwards to snap into the card of the card seat 2395. In the groove, then turn the fastening nut 2313 to move forward a certain distance.

Compared with the prior art, the utility model is capable of fixing the bar, has good reliability, is convenient to use, has a good chip removal effect, has a long service life of the brush, and automatically tensions the saw band.

The above-mentioned embodiment is an illustration of the present invention, not a limitation of the present invention, and any solution after a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims (10)

1. An improved band saw machine for mold production, characterized in that it comprises a machine table (20), a bar clamping device (21), a chip removal device (22), a tension adjustment device (23), two columns (24), driving wheel (25), driven wheel (26), motor (27), saw band (28), driving cylinder (29) and knife rest (210), described machine platform (20) is provided with Two uprights (24), described two uprights (24) are provided with knife rest (210), described machine platform (20) is provided with the driving cylinder (29) that drives knife rest (210) to move up and down, so The front end of described knife rest (210) is provided with driving wheel (25) and the motor (27) that drives driving wheel (25) to rotate, and the rear end of described knife rest (210) is provided with tension adjustment device (23), and described The tension adjusting device (23) is provided with a driven wheel (26), the driving wheel (25) and the driven wheel (26) are provided with a saw band (28), and the knife rest (210) is provided with a clear saw band. Chips on the sawtooth tip of (28), the machine platform (20) is provided with a bar clamping device (21), and the bar clamping device (21) includes two support seats (211), a frame (212), first shaft body (213), first clamping mechanism (214), two first gears (215), transmission mechanism (216), third gear (217), adjustment dial (218), the first Two clamping mechanisms (219), screw body (2110), seat body (2111), two support bodies (2112), two first sliding holes (2113) and two second sliding holes (2114), the described The frame body (212) is fixedly installed on the machine platform (20) through the support base (211), and the first slide hole (2113) is provided on the support base (211), and the upper end of the screw body (2110) is connected with the The lower end of the frame body (212) is rotatably connected, the lower end of the screw body (2110) is provided with a third gear (217), and the front support seat (211) is pierced with a rotatably connected first shaft body (213 ), the rear end of the first shaft (213) is provided with a first gear (215) meshed with the third gear (217), and the front end of the first shaft (213) is provided with an adjustment dial ( 218), a first gear (215) is provided on the first shaft body (213) between the adjusting dial (218) and the support seat (211) ahead, and the front body and rear side of the frame body (212) The body is provided with a second sliding hole (2114), the second sliding hole (2114) in the front is provided with a first clamping mechanism (214), and the second sliding hole (2114) in the rear is provided with a second clamping mechanism. mechanism (219), the first gear (215) in the front is connected with the first clamping mechanism (214) through the transmission mechanism (216), and the screw body (2110) is sleeved with a threaded seat body (2111), The two ends of the seat body (2111) pass through two first sliding holes (2113) respectively, and the front end of the seat body (2111) passes through a support body (211 2) Connected to the first clamping mechanism (214), the rear end of the seat (2111) is connected to the second clamping mechanism (219) through a support body (2112), and the chip removal device (22) includes First support (221), track (222), sliding seat (223), first pneumatic cylinder (224) and chip removal mechanism (225), the upper end side of described first support (221) is provided with track ( 222), the track (222) is fitted with a slide seat (223), the slide seat (223) is provided with a chip removal mechanism (225), and the front end of the track (222) is provided with a push slide seat ( 223) The first pneumatic cylinder (224) moving backward, the chip removal mechanism (225) includes a second support (2251), a third support (2252), a second pneumatic cylinder (2253), a pressing body (2254), the first spring (2255), the first socket body (2256), the socket sleeve (2257), the fourth support (2258), the support rod (2259), the brush (22510) and the support wheel ( 22511), the sliding seat (223) is provided with a second support (2251), the upper end of the second support (2251) is provided with a third support (2252), and the third support (2252 ) is provided with a second pneumatic cylinder (2253), the lower end of the piston rod of the second pneumatic cylinder (2253) is provided with a fourth support (2258), and the lower end of the fourth support (2258) is provided with a plug Connecting sleeve (2257), the first inserting body (2256) is arranged in the described inserting sleeve (2257), and the lower end of the first inserting body (2256) is provided with a pressing body (2254). The socket (2257) is sleeved with a first spring (2255) whose two ends are respectively fixedly connected with the fourth support (2258) and the pressing body (2254), and the rear end of the fourth support (2258) is set There is a support rod (2259), the lower end of the vertical body of the support rod (2259) is provided with a brush (22510), and the second support (2251) is provided with a The support wheel (22511) of the upper belt body supporting the saw band (28), the fourth support (2258) is provided with a positioning body (22512) passing through the third support (2252), the tension The adjusting device (23) comprises a frame body (231), a hollow shaft body (232), an adjustment dial (233), a constant force spring (234), two slotted holes (235), two first stop seats (236), Slide rail (237), sliding seat body (238), connecting mechanism (239), first connecting shaft body (2310), second connecting shaft body (2311), second retaining seat (2312) and fastening nut (2313 ), the front end of the frame body (231) is provided with a slide rail (237) fixedly connected with the knife rest (210), and a slide seat body (238) is installed on the slide rail (237), and the slide seat The rear end of the body (238) is provided with a second connecting shaft body ( 2311), the rear body of the frame body (231) is pierced with a hollow shaft body (232), and the hollow shaft body (232) is provided with a screw-connected adjusting dial on the outside of the rear body body of the frame body (231) (233), the front end outer ring surface of the hollow shaft body (232) is provided with a second stop seat (2312), and the upper and lower ends of the hollow shaft body (232) are provided with slotted holes (235), so The hollow shaft body (232) is provided with a first connecting shaft body (2310) whose front end passes through the front body of the frame body (231). A first block seat (236) is provided, and a constant force spring (234) is sleeved on the hollow shaft body (232) between the second block seat (2312) and the first block seat (236). A connecting shaft body (2310) is provided with a fastening nut (2313) in front of the frame body (231), and the front end of the first connecting shaft body (2310) is connected to the second connecting shaft body (2311) through a connecting mechanism (239). ) is fixedly connected at the back end. 2. An improved band saw machine for mold production according to claim 1, characterized in that: the first clamping mechanism (214) includes a first sliding seat (2141), several third shafts (2142 ), a number of first bearings (2143), a second shaft body (2144), a sleeve body (2145), a first base (2146), a number of first clamping bodies (2147), a second gear (2148) and a positioning rod (2149), the second sliding hole (2114) in the front is provided with a first sliding seat (2141), and the front and rear ends of the first sliding seat (2141) are provided with two third shafts (2142), Both ends of the third shaft body (2142) are provided with a first bearing (2143) that is in contact with the front body of the frame body (212), and a rotatable connection is provided on the first sliding seat (2141). The second shaft body (2144), the front end of the second shaft body (2144) is provided with a second gear (2148), and the rear end of the second shaft body (2144) is covered with a threaded sleeve (2145), the rear end of the sleeve (2145) is provided with a first base (2146), and the rear end of the first base (2146) is provided with first clamping bodies (2147) arranged evenly at intervals, The rear end of the first clamping body (2147) is provided with a V-shaped groove, and the front end of the first base (2146) is provided with a positioning rod (2149) pierced on the first sliding seat (2141). The first sliding seat (2141) is fixedly connected with the front support body (2112). 3. An improved band saw machine for mold production according to claim 1, characterized in that: the second clamping mechanism (219) includes a second sliding seat (2191), several fourth shafts (2192 ), a number of second bearings (2193), a first connecting body (2194), a second base (2195) and a number of second clamping bodies (2196), and a second sliding hole (2114) at the rear is provided with a second sliding seat (2191), the front and rear ends of the second sliding seat (2191) are provided with two fourth shafts (2192), and both ends of the fourth shaft (2192) are provided with a conflicting frame The second bearing (2193) on the rear body of (212), the front end of the second sliding seat (2191) is provided with the first connecting body (2194), and the front end of the first connecting body (2194) is provided with the first connecting body (2194). Two bases (2195), the front end of the second base (2195) is provided with the second clamping body (2196) interlaced with the first clamping body (2147), the second clamping body (2196) The front end is provided with a V-shaped groove, and the second sliding seat (2191) is fixedly connected with the support body (2112) at the rear. 4. The improved band saw machine for mold production according to claim 1, characterized in that: the transmission mechanism (216) includes a fifth shaft body (2161), two fourth gears (2162), a Two connectors (2163), a third connector (2164), a connector sleeve (2165), a groove (2166) and an anti-rotation protrusion (2167), the outer side of the front body of the frame (212) is provided with The second connecting body (2163), the front end of the second connecting body (2163) is provided with a rotatably connected fifth shaft (2161), and the lower end of the fifth shaft (2161) is provided with the first A gear (215) meshes with a fourth gear (2162), the upper end of the fifth shaft (2161) is covered with a connecting sleeve (2165), and the lower end of the connecting sleeve (2165) is provided with a concave slot (2166), the fifth shaft (2161) is provided with an anti-rotation protrusion (2167) in the groove (2166), and the upper end of the connecting sleeve (2165) is provided with the second gear (2148) A fourth gear (2162) meshingly connected, the front end of the front support (2112) is provided with a third connecting body (2164), the front end of the third connecting body (2164) and the connecting sleeve (2165) are rotatable connect. 5. The improved band saw machine for mold production according to claim 1, characterized in that: the gear ratio between the first gear (215) and the fourth gear (2162) is: 1:1, the The gear ratio of the first gear (215) and the third gear (217) is: 1:1, the gear ratio of the fourth gear (2162) and the second gear (2148) is: 1:1, the screw body (2110 ) rotates once to drive the seat body (2111) to move is half of the distance that the second shaft body (2144) rotates to drive the sleeve body (2145) to move once, and the screw body (2110) rotates to drive the seat body (2111) When moving upwards, the rotation of the second shaft (2144) drives the sleeve (2145) to move forward. 6. The improved band saw machine for mold production according to claim 1, characterized in that: the first pneumatic cylinder (224) and the second pneumatic cylinder (2253) are both high-speed cylinders, and the first The piston rod of the pneumatic cylinder (224) can be retracted under the promotion of the sliding seat (223). 7. The improved band saw machine for mold production according to claim 1, characterized in that: a blocking body (226) is provided at the rear end of the track (222), and a blocking body (226) is provided on the blocking body (226). There is the inductor (227) of induction slide seat (223). 8. An improved band saw machine for mold production according to claim 1, characterized in that: the lower end of the vertical body of the support rod (2259) is provided with a fifth support (22591), and the second The front end of the five supports (22591) is provided with a sixth support (22592), and the rear end of the fifth support (22591) is provided with a seventh support (22593). On the seventh support (22593) A sliding body (22594) is pierced, the rear end of the sliding body (22594) is provided with a handle (22595), the front end of the sliding body (22594) is provided with a stopper (22596), and the stopper (22596) The front end is provided with a second inserting body (22597) inserted into the brush seat of the brush (22510), and the sliding body (22594) between the blocking body (22596) and the seventh support (22593) is sleeved There is a second spring (22598), the upper end of the brush seat of the hair brush (22510) fits the lower end of the fifth support (22591), and the lower end of the pressing body (2254) slightly exceeds the hair brush (22510 ), the hair bundle length of the brush (22510) is 4-7 mm. 9. An improved band saw machine for mold production according to claim 1, characterized in that: the connecting mechanism (239) includes two rotating seats (2391), a third connecting shaft (2392), two A slotted hole (2393), a manual lever (2394), a card seat (2395) and two fourth connecting shafts (2396), the front end of the first connecting shaft (2310) is pierced with a third connecting shaft body (2392), the upper and lower ends of the third connecting shaft body (2392) are provided with a rotating seat (2391), the rotating seat (2391) is provided with a slot-shaped hole (2393), the second The rear end of connecting shaft body (2311) is all provided with the 4th connecting shaft body (2396) in two groove-shaped holes (2393), and the front end of described hand lever (2394) and the rotating seat (2391) above can be used as Up and down rotation connection, the first connecting shaft (2310) is provided with a deck (2395) for fixing the manual lever (2394), when the fourth connecting shaft (2396) is located at the lower end of the slotted hole (2393) , the slotted hole (2393) is in a vertical state, and the card seat (2395) is provided with a card slot that matches the manual lever (2394), and the width of the notch of the card slot is slightly smaller than that of the manual lever (2394). diameter. 10. An improved band saw machine for mold production according to any one of claims 1 to 9, characterized in that: the first stop seat (236) is integrally formed with a groove-shaped hole (2393 ) and inserted into the fifth connecting shaft body (2361) in the first connecting shaft body (2310), the fifth connecting shaft body (2361) is welded to the first connecting shaft body (2310).