Cutting assembly of bag making machine

Abstract

The utility model relates to the technical field of cutting equipment, and discloses a bag making machine cutting assembly which comprises an integrated casting, a plurality of blade assemblies are fixed to the surface of the integrated casting in a circular array mode, a pipe fitting is arranged in the integrated casting in a sleeved mode, and tool changing mechanisms are symmetrically fixed to the side wall of the integrated casting. A first telescopic electric cylinder is fixed to the bottom of the tool changing mechanism, the tool changing mechanism comprises a casting block, a transmission pipe is movably installed in the casting block, the surface of the transmission pipe is sleeved with a locking piece, the top of the locking piece extends out of the casting block, and a second telescopic electric cylinder is fixed between the top of the locking piece and the casting block. A cover plate is fixed to the side wall of the casting block, and a brake stepping motor is fixed to the side wall of the cover plate. Influence of cutter damage on production efficiency can be reduced to the maximum extent, the temperature of the blade can be adjusted, and different production requirements can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to cutting equipment technical field especially relates to bag making machine cutting subassembly. BACKGROUND

[0002] In the bag making machine production line, one step is to cut the raw material quantitatively, when the cutter is damaged in daily production, the whole production line needs to be stopped to replace and maintain the cutter, the maintenance time will occupy the production time, and the maintenance time cannot be moved to non-production time, which greatly affects the production efficiency, so the bag making machine cutting subassembly needs to be improved. SUMMARY

[0003] The utility model aims at at least one of the technical problems in the related art to some extent. Therefore, one purpose of the utility model is to propose a bag making machine cutting subassembly, which can minimize the impact of cutter damage on production efficiency and adjust the temperature of the blade to meet different production needs.

[0004] The bag making machine cutting subassembly provided by the utility model comprises an integral casting, a plurality of blade assemblies are fixed in a circular array on the surface of the integral casting, a pipe is sleeved in the integral casting, a knife changing mechanism is fixed symmetrically on the side wall of the integral casting, a first telescopic electric cylinder is fixed to the bottom of the knife changing mechanism, and a second telescopic electric cylinder is fixed between the top of a locking piece and the integral casting.

[0005] The knife changing mechanism comprises a casting block, a transmission pipe is movably installed in the casting block, the surface of the transmission pipe is sleeved with a locking piece, the second telescopic electric cylinder is fixed between the top of the locking piece and the casting block, a cover plate is fixed to the side wall of the casting block, a brake stepping motor is fixed to the side wall of the cover plate, and the two ends of the transmission pipe are fixed with the side wall of the integral casting and the output end of the brake stepping motor.

[0006] The blade assembly comprises a blade body, a heat conduction plate is sleeved on the top of the blade body, a plurality of heat conduction pipes are fixed in penetration on the surface of the heat conduction plate, and the blade body and the heat conduction plate are symmetrically sleeved with an assembly plate.

[0007] Preferably, an assembly hole for sleeving the pipe is formed in the integral casting, a plurality of mounting grooves for fixing the blade assembly are formed on the surface of the integral casting, and a plurality of first through holes are formed between each mounting groove and the assembly hole.

[0008] Preferably, a plurality of butt plates are fixed in a circular array in the pipe, a plurality of heat conduction sleeves are fixed to the inner side wall of the butt plate, a plurality of second through holes are formed on the surface of the pipe, and the heat conduction pipes penetrate the first through holes and the second through holes and extend into the heat conduction sleeves.

[0009] Preferably, a pipe joint is fixed on the surface of the transmission pipe and close to one end of the integral casting, and a partition is fixed in the transmission pipe and close to one end of the integral casting.

[0010] Preferably, a plurality of positioning keys are fixed on the surface of the transmission pipe, and a plurality of positioning grooves are formed in the inner ring of the locking member.

[0011] Preferably, a sleeving groove for movably mounting the locking member and a sleeving hole for movably mounting the transmission pipe are formed in the integral casting block, the sleeving groove and the sleeving hole are connected, and a split bearing is sleeved between the transmission pipe and the sleeving hole.

[0012] The utility model discloses the beneficial effect is:

[0013] 1. When the tool is damaged, the tool switching operation can be carried out in a very short time, when the tool is switched, only need to control the second telescopic electric cylinder to contract, unlock the locking of transmission pipe, then control the brake stepper motor output end to rotate a certain angle, carry out the blade switching, the replacement of damaged tool can be adjusted to non-production time, the influence of tool damage on production efficiency is reduced to the maximum;

[0014] 2. The cutting assembly is provided with a pipe for storing hot water or cold water, and the heat transfer plate is used to transfer the heat between the pipe and the blade body, cold water or hot water can be passed into the pipe according to the actual production situation of the production line, the temperature of the blade body is adjusted, and different cutting effects are generated when the blade body cuts the material. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure schematic diagram of the cutting assembly of the bag making machine provided by the utility model.

[0016] Figure 2 It is the local structure explosion drawing of the cutting assembly of the bag making machine provided by the utility model.

[0017] Figure 3 It is the local sectional view of the tool changing mechanism of the cutting assembly of the bag making machine provided by the utility model.

[0018] Figure 4 It is the integral casting structure schematic diagram of the cutting assembly of the bag making machine provided by the utility model.

[0019] In the figure: 1, integral casting; 11, assembly hole; 12, mounting groove; 13, first through hole; 2, blade assembly; 21, blade body; 22, heat conduction plate; 23, heat conduction pipe; 24, assembly plate; 3, pipe fitting; 31, butt plate; 311, heat conduction sleeve; 32, second through hole; 4, tool changing mechanism; 41, casting block; 42, transmission pipe; 421, pipe joint; 422, partition plate; 43, locking piece; 44, second telescopic cylinder; 45, cover plate; 46, brake stepping motor; 5, first telescopic cylinder. DETAILED DESCRIPTION

[0020] REFERENCE Figures 1-4 The bag cutting assembly of the bag making machine comprises an integral casting 1, a plurality of blade assemblies 2 are fixed in a circular array on the surface of the integral casting 1, a pipe fitting 3 is sleeved in the integral casting 1, and a tool changing mechanism 4 is fixed symmetrically on the side wall of the integral casting 1. The symmetrical arrangement improves the tool changing accuracy and cutting stability, but increases the load of the first telescopic cylinder 5. The bottom of the tool changing mechanism 4 is fixed with the first telescopic cylinder 5, which drives the integral casting 1 and the internal structure and the tool changing mechanism 4 to move up and down as a whole, and cuts the material;

[0021] The tool changing mechanism 4 comprises a casting block 41, a transmission pipe 42 movably mounted in the casting block 41, a locking piece 43 sleeved on the surface of the transmission pipe 42, a second telescopic cylinder 44 fixed at the top of the locking piece 43 and extending out of the casting block 41, a cover plate 45 fixed on the side wall of the casting block 41, and a brake stepping motor 46 fixed on the side wall of the cover plate 45. The brake stepping motor 46 is a closed-loop brake stepping motor with the model of LS86E85-K4J60S04. The two ends of the transmission pipe 42 are fixed with the side wall of the integral casting 1 and the output end of the brake stepping motor 46 respectively. The transmission pipe 42 is locked by the locking piece 43, thereby improving the stability of the blade body 21 during cutting;

[0022] The blade assembly 2 comprises a blade body 21, a heat conduction plate 22 sleeved on the top of the blade body 21 for conducting heat between the pipe fitting 3 and the blade body 21, thereby controlling the temperature of the blade body 21. A plurality of heat conduction pipes 23 are fixed through the surface of the heat conduction plate 22. The blade body 21 and the heat conduction plate 22 are symmetrically sleeved with assembly plates 24 on the outside. An adapter hole is formed in the top of the blade body 21. The heat conduction pipes 23 are inserted into the blade body 21, thereby achieving better heat conduction effect. Two assembly plates 24 are wrapped and combined from both sides of the blade body 21, the heat conduction plate 22 and the heat conduction pipes 23. The combined assembly plate 24 is inserted into the mounting groove 12, and is positioned and fixed by screws.

[0023] The integral casting 1 is internally provided with an assembly hole 11 for sleeving the pipe 3, and the surface of the integral casting 1 is provided with a plurality of mounting grooves 12 for fixing the blade assembly 2, and a plurality of first through holes 13 are arranged between each mounting groove 12 and the assembly hole 11.

[0024] The pipe 3 is internally provided with a plurality of butt plates 31 arranged in a circular array, the inner side wall of the butt plate 31 is fixedly provided with a plurality of heat conduction sleeves 311, and the surface of the pipe 3 is provided with a plurality of second through holes 32, the heat conduction pipe 23 penetrates the first through hole 13 and the second through hole 32 and extends into the heat conduction sleeve 311, when cutting, the high-temperature cutting knife cuts the material by heating the blade, which can quickly penetrate and cut through the object, and is especially suitable for cutting thick plastic, rubber, foam and other difficult-to-cut materials, and the cutting efficiency is significantly higher than that of traditional knives, but the high temperature will cause certain damage to the knife body, and the cross section of the heat cutting is relatively rough, while the low-temperature cutting can significantly prolong the service life of the knife by reducing the thermal damage in the cutting process, improve the smoothness of the machining surface, reduce the surface roughness, and improve the dimensional accuracy, but the cutting time required will be prolonged, in summary, the high-temperature and low-temperature knives have their own advantages and disadvantages when cutting materials, and the time application can be determined according to the speed of the production line, and can be artificially controlled.

[0025] The surface of the two-side transmission pipe 42 and close to one end of the integral casting 1 is fixedly provided with a pipe joint 421, and the inner side of the transmission pipe 42 and close to one end of the integral casting 1 is fixedly provided with a partition plate 422.

[0026] The surface of the transmission pipe 42 is fixedly provided with a plurality of positioning keys, and the inner ring of the locking piece 43 is provided with a plurality of positioning grooves.

[0027] The inner side of the casting block 41 is provided with a sleeving groove for movably mounting the locking piece 43 and a sleeving hole for movably mounting the transmission pipe 42, the sleeving groove and the sleeving hole are connected, and the transmission pipe 42 and the sleeving hole are sleeved with a split bearing.

[0028] When the device is used, the cutting assembly is assembled with the bag making machine production line, and each electrical equipment in the cutting assembly is electrically connected with the terminal controller, the knife is operated, the equipment is adjusted, the water inlet pipe and the water outlet pipe are respectively connected with the two-side pipe joints 421, and cold water or hot water is introduced according to the production condition of the bag making machine production line;

[0029] When the blade is damaged during cutting, the production line is affected and the blade needs to be replaced. First, the second telescopic cylinder 44 is extended to drive the locking piece 43 to translate. The positioning groove in the inner circle of the locking piece 43 is separated from the positioning key on the surface of the transmission pipe 42, and the transmission pipe 42 can rotate. The output end of the brake stepping motor 46 rotates and drives the transmission pipe 42 and the integrated casting 1 to rotate synchronously by the same angle. The plurality of blade bodies 21 on the surface of the integrated casting 1 rotate synchronously around the central axis of the integrated casting 1 by the same angle, realizing the replacement of the blade. After replacement, the second telescopic cylinder 44 is retracted, and the positioning groove in the inner circle of the locking piece 43 is reconnected with the positioning key on the surface of the transmission pipe 42, realizing the position locking of the transmission pipe 42. After the transmission pipe 42 is locked, the same integrated casting 1 is also locked in position, and the material will not be deflected during cutting.

[0030] Reference Figure 2 In the embodiment, three blade assemblies 2 are assembled, three positioning keys are fixed on the surface of the transmission pipe 42, and three positioning grooves are formed in the inner circle of the locking piece 43. When the blade is replaced, the output end of the brake stepping motor 46 rotates by 60°, and the transmission pipe 42, the integrated casting 1 and the plurality of blade bodies 21 rotate by the same angle. After rotation, the positioning groove and the positioning key can still be connected and locked.

Claims

1. A bag-making machine cutting assembly, characterized in that: It includes an integral casting, on the surface of which multiple blade assemblies are fixed in a circular row, and a tubular component is installed inside the integral casting. A tool changing mechanism is symmetrically fixed on the side wall of the integral casting, and a first telescopic electric cylinder is fixed at the bottom of the tool changing mechanism. The tool changing mechanism includes a casting block, a transmission tube is movably installed inside the casting block, a locking member is fitted on the surface of the transmission tube, the top of the locking member extends out of the casting block and is fixed between the locking member and the casting block, a second telescopic electric cylinder is fixed, a cover plate is fixed on the side wall of the casting block, a brake stepper motor is fixed on the side wall of the cover plate, and the two ends of the transmission tube are respectively fixed to the side wall of the integral casting and the output end of the brake stepper motor; The blade assembly includes a blade body, a heat-conducting plate is fitted on the top of the blade body, and multiple heat-conducting pipes are fixed through the surface of the heat-conducting plate. Assembly plates are symmetrically fitted on the outside of the blade body and the heat-conducting plate.

2. The bag-making machine cutting assembly according to claim 1, characterized in that: The integral casting has an internal assembly hole for mounting the tube, and the surface of the integral casting has a plurality of mounting grooves for fixing the blade assembly. Each mounting groove and the assembly hole have a plurality of first through holes.

3. The bag-making machine cutting assembly according to claim 2, characterized in that: The pipe fitting has multiple docking plates arranged in a circular pattern inside. Multiple heat-conducting sleeves are fixed to the inner sidewalls of the docking plates. Multiple second through holes are opened on the surface of the pipe fitting. The heat-conducting pipe passes through the first and second through holes and extends into the heat-conducting sleeves.

4. The bag-making machine cutting assembly according to claim 1, characterized in that: Pipe joints are fixed to the surface of both sides of the transmission pipe and to the end near the integral casting, and partitions are fixed to the inside of the transmission pipe and to the end near the integral casting.

5. The bag-making machine cutting assembly according to claim 1, characterized in that: The surface of the transmission tube is fixed with multiple positioning keys, and the inner ring of the locking member is provided with multiple positioning grooves.

6. The bag-making machine cutting assembly according to claim 1, characterized in that: The casting block has an internal slot for movably mounting the locking component and a mounting hole for movably mounting the transmission tube. The slot and the mounting hole are connected, and a split bearing is fitted between the transmission tube and the mounting hole.

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