CN213532989U - Back knife lathe for producing handrails - Google Patents

Abstract

The utility model discloses a back knife lathe for producing handrails, which structurally comprises a base, a first machine base, a first air cylinder, a first clamping rod, a second machine base, a first driving motor, a connecting rod, a second clamping rod, a transverse moving mechanism, a longitudinal moving mechanism, a turning tool processing mechanism, a back knife processing mechanism, an extension frame, a controller and a power cord, the right part of the top end of the base is welded with a first machine base, the middle parts of the left and right ends of the first machine base penetrate through a first air cylinder, the first base is fixedly connected with a first cylinder, the left end of the first cylinder is rotationally connected with a first clamping rod through a rotating piece, the left part of the top end of the base is welded with the second machine base, the middle parts of the left and right ends of the first machine base are penetrated through by the first air cylinder, the utility model has the following beneficial effects, the back knife has the advantages that the transverse adjusting device and the longitudinal adjusting device are sequentially arranged at the rear end of the back knife, so that the screw driving mode is adopted to facilitate operation, adjustment and transposition; the working stability is strong.

Description

Back knife lathe for producing handrails

Technical Field

The utility model belongs to the technical field of wood working machinery, in particular to back knife lathe is used in railing production.

Background

The railing, called as the appendix in ancient China, also called as the hook, is a safety facility on bridges and buildings, plays a role in separating and guiding in use, ensures that the boundary of a divided area is clear, and has decorative significance;

the railing is made of wood, metal, plastic, terrazzo, marble and the like. Safety, fastness, beauty, smooth surface and no sharp edges and corners are required;

the back knife type copying lathe is adopted when wood work pieces with different rotary bodies and special-shaped surfaces are produced in batches, so that the production efficiency and the machining precision can be greatly improved;

and when the wooden railing of production, also need to use the back of the body sword lathe to carry out the processing operation, but this back of the body sword lathe of the novel this back of the body sword lathe of prior art when adjusting the sword position operation convenient not enough.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the prior art not enough, provide a back knife lathe for railing production now to solve this back knife lathe operation when adjusting the sword position problem convenient enough, through adopting the screw rod drive mode so that the beneficial effect of operation adjustment transposition.

(II) technical scheme

The utility model discloses a following technical scheme realizes: the utility model provides a back knife lathe for railing production, which comprises a base, a first machine base, a first air cylinder, a first clamping bar, a second machine base, a first driving motor, a connecting bar, a second clamping bar, a transverse moving mechanism, a longitudinal moving mechanism, a lathe tool processing mechanism, a back knife processing mechanism, an extension frame, a controller and a power cord, wherein the right part of the top end of the base is welded with the first machine base, the middle parts of the left and right ends of the first machine base are penetrated through the first air cylinder, the first machine base is fixedly connected with the first air cylinder, the left end of the first air cylinder is rotatably connected with the first clamping bar through a rotating piece, the left part of the top end of the base is welded with the second machine base, the middle part of the second machine base is fixedly embedded with the first driving motor, the right end of the first driving motor is fixedly spliced with the connecting bar, the right end of the connecting bar is fixedly connected with the second clamping bar, the front part of the top, the top end of the transverse moving mechanism is connected with a longitudinal moving mechanism through a bolt, the rear portion of the top end of the longitudinal moving mechanism is fixedly connected with a turning tool machining mechanism, the left portion and the right portion of the rear end of the base are connected with a back knife machining mechanism through a bolt, the upper left portion of the front end of the back knife machining mechanism is connected with an extension frame through a bolt, the front portion of the bottom end of the extension frame is connected with a controller through a bolt, and the left end of the controller is provided with a power line.

Furthermore, the back knife processing mechanism comprises a frame, guide pillars, guide sleeves, a second air cylinder, a longitudinal adjusting device, a transverse adjusting device and a back knife, wherein the guide pillars are symmetrically and fixedly connected to the left end and the right end of the inner side of the frame, the guide pillars penetrate through the middle parts of the two ends of the top bottom of the guide sleeves and are movably connected with the guide sleeves, the second air cylinder is fixedly embedded in the middle of the top end of the frame, the bottom end of the second air cylinder is communicated with the inner side of the frame, the bottom end of the second air cylinder is fixedly connected with the longitudinal adjusting device, the left end and the right end of the longitudinal adjusting device are respectively fixedly connected with the guide sleeves, the front end of the longitudinal adjusting device is connected with the transverse adjusting device through bolts, the front end of the transverse adjusting device is connected with a.

Further, the longitudinal adjusting device comprises a fixed plate, a pushing assembly, an adjusting plate and a stabilizing assembly, the middle parts of the front end and the rear end of the fixed plate are fixedly connected with the pushing assembly, the front end of the pushing assembly is fixedly connected with the adjusting plate, the stabilizing assembly is symmetrically arranged between the left end and the right end of the fixed plate and the adjusting plate, the front end and the rear end of the stabilizing assembly are respectively fixedly connected with the adjusting plate and the fixed plate, and the front end of the adjusting plate is fixedly connected with the transverse adjusting device.

Further, promote the subassembly and include first threaded rod, axostylus axostyle and dwang, first threaded rod rear end is provided with the axostylus axostyle to first threaded rod and axostylus axostyle integrated into one piece, the both ends symmetry rigid coupling has the dwang at axostylus axostyle top bottom, first threaded rod runs through both ends middle part around the solid board to solid board and first threaded rod threaded connection, board rear end middle part is transferred in the fixed embedding in first threaded rod front end to transfer the board to pass through the bearing and be connected with first threaded rod rotation.

Further, stabilize the subassembly and include loop bar, telescopic shaft and universal ball, loop bar front end middle part runs through the telescopic shaft to telescopic shaft and loop bar swing joint, both ends rear portion symmetry rigid coupling has universal ball about the telescopic shaft to universal ball and loop bar inner wall swing joint, loop bar rear end and solid board fixed connection, the telescopic shaft front end with transfer board fixed connection.

Further, horizontal adjusting device includes frid, second threaded rod, slider, conducting bar, second driving motor and backup pad, both ends run through the second threaded rod about the frid to the frid passes through the bearing and is connected with the second threaded rod rotation, the second threaded rod runs through both ends about the slider to slider and second threaded rod threaded connection, slider top bottom both ends respectively with conducting bar sliding connection, conducting bar symmetry rigid coupling is in frid inner wall top bottom both ends, second threaded rod right-hand member is pegged graft with second driving motor is fixed, second driving motor bottom and backup pad bolted connection, backup pad left end and frid fixed connection, slider front end and back of the body sword bolted connection.

Furthermore, guide grooves are symmetrically formed in the left end and the right end of the inner wall of the sleeve rod, and the inner wall of each guide groove is connected with the outer surface of the universal ball in a sliding mode.

Furthermore, sliding chutes are symmetrically arranged at two ends of the top and the bottom of the sliding block, and the inner walls of the sliding chutes are in sliding connection with the outer surfaces of the guide bars.

(III) advantageous effects

Compared with the prior art, the utility model, following beneficial effect has:

1) the problem that the operation is convenient enough when adjusting the sword position for solving this back of the body sword lathe, through setting gradually violently transferring the device and indulging the device in back of the body sword rear end, position promotes around the board will be transferred to the promotion subassembly through hand operation, the stability subassembly provides the mobility stability when promoting, and start the operation of second driving motor, can drive the second threaded rod rotatory in frid and slider department, it controls in the middle of the frid inner wall to drive the slider under the conducting bar effect, position control about the back of the body sword, reached through adopting screw rod drive mode so that the beneficial effect of operation adjustment transposition.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the cross-sectional structure of the back knife processing mechanism of the present invention;

FIG. 3 is a schematic structural view of the stabilizing assembly of the present invention;

FIG. 4 is a schematic view of a cross-sectional partial structure A of the back knife processing mechanism of the present invention;

in the figure: a base-1, a first machine seat-2, a first cylinder-3, a first clamping rod-4, a second machine seat-5, a first driving motor-6, a connecting rod-7, a second clamping rod-8, a transverse moving mechanism-9, a longitudinal moving mechanism-10, a turning tool processing mechanism-11, a back knife processing mechanism-12, an extension frame-13, a controller-14, a power line-15, a frame-121, a guide post-122, a guide sleeve-123, a second cylinder-124, a longitudinal adjusting device-125, a transverse adjusting device-126, a back knife-127, a fixed plate-1251, a pushing component-1252, an adjusting plate-1253, a stabilizing component-1254, a first threaded rod-12521, a 125-12522, a rotating rod-12523, a sleeve rod-41, a telescopic shaft-12542, a push component-1252, a push component-1253, a stabilizing component-1254, a, A ball-shaped universal ball-12543, a groove plate-1261, a second threaded rod-1262, a slide block-1263, a guide strip-1264, a second driving motor-1265 and a supporting plate-1266.

Detailed Description

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, the present invention provides a back knife lathe for producing balustrades: comprises a base 1, a first machine seat 2, a first air cylinder 3, a first clamping rod 4, a second machine seat 5, a first driving motor 6, a connecting rod 7, a second clamping rod 8, a transverse moving mechanism 9, a longitudinal moving mechanism 10, a turning tool processing mechanism 11, a back knife processing mechanism 12, an extension frame 13, a controller 14 and a power cord 15, wherein the right part of the top end of the base 1 is welded with the first machine seat 2, the middle parts of the left and right ends of the first machine seat 2 penetrate through the first air cylinder 3, the first machine seat 2 is fixedly connected with the first air cylinder 3, the left end of the first air cylinder 3 is rotatably connected with the first clamping rod 4 through a rotating part, the left part of the top end of the base 1 is welded with the second machine seat 5, the first driving motor 6 is fixedly embedded in the middle part of the right end of the second machine seat 5, the right end of the first driving motor 6 is fixedly inserted with the connecting rod 7, the right end of the connecting rod 7 is fixedly connected with the, the top end of the transverse moving mechanism 9 is connected with the longitudinal moving mechanism 10 through a bolt, the rear portion of the top end of the longitudinal moving mechanism 10 is fixedly connected with the turning tool machining mechanism 11, the left portion and the right portion of the rear end of the base 1 are connected with the back knife machining mechanism 12 through a bolt, the upper left portion of the front end of the back knife machining mechanism 12 is connected with the extension frame 13 through a bolt, the front portion of the bottom end of the extension frame 13 is connected with the controller 14 through a bolt, and the left end of the controller 14 is provided with.

Wherein, the back knife processing mechanism 12 comprises a frame 121, a guide post 122, a guide sleeve 123, a second air cylinder 124, a longitudinal adjusting device 125, a transverse adjusting device 126 and a back knife 127, the left and right ends of the inner side of the frame 121 are symmetrically and fixedly connected with guide posts 122, the guide posts 122 penetrate through the middle parts of the top and bottom ends of the guide sleeve 123, and the guide post 122 is movably connected with the guide sleeve 123, a second cylinder 124 is fixedly embedded in the middle of the top end of the frame 121, and the bottom end of the second cylinder 124 is communicated with the inner side of the frame 121, the bottom end of the second cylinder 124 is fixedly connected with the longitudinal adjusting device 125, the left end and the right end of the longitudinal adjusting device 125 are respectively fixedly connected with the guide sleeve 123, the front end of the longitudinal adjusting device 125 is connected with the transverse adjusting device 126 through bolts, the front end of the horizontal adjusting device 126 is connected with the back knife 127 through a bolt, and the bottom ends of the frame 121 and the guide post 122 are both fixedly connected with the base 1, so that the further turning operation is performed, and the precision and the appearance are improved.

The longitudinal adjusting device 125 comprises a fixed plate 1251, a pushing assembly 1252, an adjusting plate 1253 and a stabilizing assembly 1254, the middle parts of the front and rear ends of the fixed plate 1251 are fixedly connected with the pushing assembly 1252, the front end of the pushing assembly 1252 is fixedly connected with the adjusting plate 1253, the stabilizing assemblies 1254 are symmetrically arranged between the left and right ends of the fixed plate 1251 and the adjusting plate 1253, the front and rear ends of the stabilizing assembly 1254 are respectively fixedly connected with the adjusting plate 1253 and the fixed plate 1251, the front end of the adjusting plate 1253 is fixedly connected with the transverse adjusting device 126, and the front and rear positions of the back knife 127 are adjusted.

The pushing assembly 1252 comprises a first threaded rod 12521, a shaft rod 12522 and a rotating rod 12523, the shaft rod 12522 is arranged at the rear end of the first threaded rod 12521, the first threaded rod 12521 and the shaft rod 12522 are integrally formed, the rotating rod 12523 is symmetrically fixedly connected to the top end and the bottom end of the shaft rod 12522, the first threaded rod 12521 penetrates through the middle parts of the front end and the rear end of the fixed plate 1251, the fixed plate 1251 is in threaded connection with the first threaded rod 12521, the front end of the first threaded rod 12521 is fixedly embedded into the middle part of the rear end of the adjustable plate 1253, the adjustable plate 1253 is in rotating connection with the first threaded rod 12521 through a bearing, and according to the screw rod component, the pushing assembly is.

The stabilizing assembly 1254 comprises a sleeve rod 12541, a telescopic shaft 12542 and universal balls 12543, the middle part of the front end of the sleeve rod 12541 penetrates through the telescopic shaft 12542, the telescopic shaft 12542 is movably connected with the sleeve rod 12541, the rear parts of the left and right ends of the telescopic shaft 12542 are symmetrically fixedly connected with the universal balls 12543, the universal balls 12543 are movably connected with the inner wall of the sleeve rod 12541, the rear end of the sleeve rod 12541 is fixedly connected with a fixed plate 1251, and the front end of the telescopic shaft 12542 is fixedly connected with a regulating plate 1253.

The horizontal adjusting device 126 comprises a groove plate 1261, a second threaded rod 1262, a sliding block 1263, a guide strip 1264, a second driving motor 1265 and a supporting plate 1266, the left end and the right end of the groove plate 1261 are penetrated through by the second threaded rod 1262, the groove plate 1261 is rotatably connected with the second threaded rod 1262 through a bearing, the second threaded rod 1262 is penetrated through the left end and the right end of the sliding block 1263, the sliding block 1263 is in threaded connection with the second threaded rod 1262, the top and bottom ends of the sliding block 1263 are respectively in sliding connection with the guide strip 1264, the guide strip 1264 is symmetrically and fixedly connected with the top and bottom ends of the inner wall of the groove plate 1261, the second threaded rod 1262 is fixedly inserted with the second driving motor 1265, the bottom end of the second driving motor 1265 is in threaded connection with the supporting plate 1266, the left end of the supporting plate 1266 is fixedly connected with the groove plate 1261, the front end of the sliding block 1263 is in threaded connection with the.

The left end and the right end of the inner wall of the sleeve rod 12541 are symmetrically provided with guide grooves, and the inner walls of the guide grooves are in sliding connection with the outer part of the outer surface of the universal ball 12543, so that the sliding stability of the universal ball 12543 is improved.

The top and bottom ends of the sliding block 1263 are symmetrically provided with sliding grooves, and the inner walls of the sliding grooves are in sliding connection with the outer part of the outer surface of the guide strip 1264, so that the sliding stability of the sliding block 1263 is improved.

The working principle is as follows: firstly, taking out the back knife lathe for producing the railing and placing the back knife lathe at a position to be used, and supporting and stabilizing the back knife lathe through a base 1;

then, an external power supply is connected through the power cord 15;

next, when a new back knife 127 with different sizes is replaced, that is, the horizontal adjusting device 126 and the vertical adjusting device 125 are sequentially arranged at the rear end of the back knife 127, the rotating rod 12523 in the pushing assembly 1252 is held by the hand and a rotating force is applied, so that the first threaded rod 12521 can be driven to rotate in a threaded manner at the fixed plate 1251 and rotate through a bearing at the middle part of the rear end of the adjusting plate 1253, the adjusting plate 1253 is pushed to the front and rear position, the telescopic shaft 12542 in the stabilizing assembly 1254 provides a position limit for sliding back and forth in the sleeve rod 12541, so as to improve the stability, and the universal balls 12543 arranged at the left and right ends of the telescopic shaft 12542 provide sliding support in the sleeve rod 12541, so as to further improve the stability of the movement during pushing;

and start second driving motor 1265 and operate, can drive second threaded rod 1262 and rotate in groove plate 1261 and slider 1263 department, drive slider 1263 and remove about in the middle of groove plate 1261 inner wall under the effect of guide 1264, control back of the body sword 127 and carry out left and right position adjustment, reached through adopting the screw rod drive mode so that the beneficial effect of operation adjustment transposition.

Then, when the position of the back knife 127 is adjusted, the handrail raw material to be processed is placed between the first clamping bar 4 and the second clamping bar 8, and the controller 14 starts the first cylinder 3 to operate, so that the first clamping bar 4 can be pushed to move and the handrail raw material can be stably held;

finally, can drive through starting the operation of first driving motor 6 and connect pole 7, second holder 8, railing raw materials and first holder 4 and carry out synchronous revolution, under the effect of controller 14, control sideslip mechanism 9 and indulge the mechanism 10 and carry out the position removal and the adjustment of lathe tool processing mechanism 11, carry out preliminary railing raw materials lathe work by lathe tool processing mechanism 11, in the middle of this process, second cylinder 124 in the middle of the back of the body sword processing mechanism 12 promotes back of the body sword 127 and reciprocates to railing raw materials department simultaneously, carry out further turning operation, and guide pillar 122 provides the stabilizing action that back of the body sword 127 reciprocated in the middle of guide pin bushing 123.

The utility model discloses a control mode is controlled through artifical start-up and closing switch, and the wiring diagram of power component and the supply of power belong to the common general knowledge in this field, and the utility model discloses mainly be used for protecting mechanical device, so the utility model discloses no longer explain control mode and wiring in detail and arrange.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (8)

1. The utility model provides a railing production is with back of body sword lathe which characterized in that: comprises a base (1), a first machine base (2), a first cylinder (3), a first clamping rod (4), a second machine base (5), a first driving motor (6), a connecting rod (7), a second clamping rod (8), a transverse moving mechanism (9), a longitudinal moving mechanism (10), a turning tool processing mechanism (11), a back tool processing mechanism (12), an extension frame (13), a controller (14) and a power line (15), wherein the right part of the top end of the base (1) is welded with the first machine base (2), the middle parts of the left and right ends of the first machine base (2) are penetrated through the first cylinder (3), the first machine base (2) is fixedly connected with the first cylinder (3), the left end of the first cylinder (3) is rotatably connected with the first clamping rod (4) through a rotating part, the left part of the top end of the base (1) is welded with the second machine base (5), the middle part of the right end of the second machine base (5) is fixedly embedded with the first driving motor (6), first driving motor (6) right-hand member with connect pole (7) fixed grafting, connect pole (7) right-hand member and second clamping bar (8) fixed connection, base (1) top front portion and sideslip mechanism (9) bolted connection, sideslip mechanism (9) top with indulge and move mechanism (10) bolted connection, indulge and move mechanism (10) top rear portion and lathe tool processing mechanism (11) fixed connection, both all with back of the body sword processing mechanism (12) bolted connection about base (1) rear end, back of the body sword processing mechanism (12) front end upper left portion and extend frame (13) bolted connection, extend frame (13) bottom front portion and controller (14) bolted connection, controller (14) left end is provided with power cord (15).

2. The back knife lathe for producing railings as claimed in claim 1, characterized in that: the back knife processing mechanism (12) comprises a frame (121), a guide post (122), a guide sleeve (123), a second cylinder (124), a longitudinal adjusting device (125), a transverse adjusting device (126) and a back knife (127), wherein the guide post (122) is symmetrically and fixedly connected to the left end and the right end of the inner side of the frame (121), the guide post (122) penetrates through the middle parts of the two ends of the top and the bottom of the guide sleeve (123), the guide post (122) is movably connected with the guide sleeve (123), the second cylinder (124) is fixedly embedded in the middle part of the top end of the frame (121), the bottom end of the second cylinder (124) is communicated with the inner side of the frame (121), the bottom end of the second cylinder (124) is fixedly connected with the longitudinal adjusting device (125), the left end and the right end of the longitudinal adjusting device (125) are respectively fixedly connected with the guide sleeve (123), the front end of the longitudinal adjusting device (125) is connected with the transverse adjusting device (126) through a bolt, and the, the bottom ends of the frame (121) and the guide post (122) are fixedly connected with the base (1).

3. The back knife lathe for producing railings as claimed in claim 2, characterized in that: indulge and transfer device (125) including solid board (1251), promotion subassembly (1252), transfer board (1253) and stable subassembly (1254), both ends middle part and promotion subassembly (1252) fixed connection around solid board (1251), promote subassembly (1252) front end and transfer board (1253) fixed connection, gu board (1251) and transfer board (1253) are controlled between the both ends the symmetry and are provided with stable subassembly (1254) to both ends respectively with transferring board (1253) and solid board (1251) fixed connection around stable subassembly (1254), transfer board (1253) front end and violently transfer device (126) fixed connection.

4. The back knife lathe for producing railings as claimed in claim 3, characterized in that: the pushing assembly (1252) comprises a first threaded rod (12521), a shaft rod (12522) and a rotating rod (12523), wherein the shaft rod (12522) is arranged at the rear end of the first threaded rod (12521), the first threaded rod (12521) and the shaft rod (12522) are integrally formed, the rotating rod (12523) is symmetrically fixedly connected to the top end and the bottom end of the shaft rod (12522), the first threaded rod (12521) penetrates through the middle parts of the front end and the rear end of a fixing plate (1251), the fixing plate (1251) is in threaded connection with the first threaded rod (12521), the front end of the first threaded rod (12521) is fixedly embedded into the middle part of the rear end of a regulating plate (1253), and the regulating plate (1253) is rotatably connected with the first threaded rod (12521) through a bearing.

5. The back knife lathe for producing railings as claimed in claim 3, characterized in that: the stabilizing assembly (1254) comprises a sleeve rod (12541), a telescopic shaft (12542) and universal balls (12543), the middle part of the front end of the sleeve rod (12541) penetrates through the telescopic shaft (12542), the telescopic shaft (12542) is movably connected with the sleeve rod (12541), the rear parts of the left end and the right end of the telescopic shaft (12542) are symmetrically fixedly connected with the universal balls (12543), the universal balls (12543) are movably connected with the inner wall of the sleeve rod (12541), the rear end of the sleeve rod (12541) is fixedly connected with a fixed plate (1251), and the front end of the telescopic shaft (12542) is fixedly connected with a regulating plate (1253).

6. The back knife lathe for producing railings as claimed in claim 2, characterized in that: the horizontal adjusting device (126) comprises a groove plate (1261), a second threaded rod (1262), a sliding block (1263), a guide strip (1264), a second driving motor (1265) and a supporting plate (1266), the left end and the right end of the groove plate (1261) are penetrated through by the second threaded rod (1262), the groove plate (1261) is rotatably connected with the second threaded rod (1262) through a bearing, the second threaded rod (1262) penetrates through the left end and the right end of the sliding block (1263), the sliding block (1263) is in threaded connection with the second threaded rod (1262), the top end and the bottom end of the sliding block (1263) are respectively in sliding connection with the guide strip (1264), the guide strip (1264) is symmetrically and fixedly connected with the top end and the bottom end of the inner wall of the groove plate (1261), the right end of the second driving motor (1262) is fixedly inserted with the second driving motor (1265), the bottom end of the second driving motor (1265) is in bolted connection with the supporting plate (1266), and the left end of the supporting plate (1266) is fixedly, the front end of the sliding block (1263) is connected with the back knife (127) through a bolt.

7. The back knife lathe for producing railings as claimed in claim 5, wherein: guide grooves are symmetrically formed in the left end and the right end of the inner wall of the sleeve rod (12541), and the inner walls of the guide grooves are connected with the outer surface of the universal ball (12543) in a sliding mode.

8. The back knife lathe for producing railings as claimed in claim 6, wherein: the top and bottom ends of the sliding block (1263) are symmetrically provided with sliding grooves, and the inner walls of the sliding grooves are in sliding connection with the outer surfaces of the guide strips (1264).

Images