PVC pipe punching device and method

Abstract

The invention discloses a PVC pipe punching device and method. The PVC pipe punching device comprises a workbench, and an external supporting mechanism and an internal supporting mechanism are arranged on the workbench; the inner supporting mechanism comprises an inner supporting block and a first linear module for driving the inner supporting block to extend into the PVC pipe, the inner supporting block is attached to the inner wall of the PVC pipe, and a receding opening is formed in the upper end of the inner supporting block; a door-shaped support is erected on the workbench, and a punching mechanism and a polishing mechanism are arranged on the door-shaped support. The punching mechanism comprises a drilling machine, a second linear module for driving the drilling machine to lift and a third linear module for driving the drilling machine to translate; the polishing mechanism comprises a polishing head, an inflation air bag is arranged on the outer side of the polishing head, and a polishing layer is arranged on the outer side of the inflation air bag. The inner supporting block extends into the PVC pipe, the inner supporting block is attached to the inner wall of the PVC pipe, the PVC pipe is prevented from deforming during punching, and the punching quality and the quality of the PVC pipe are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of pipe processing, and in particular to a PVC pipe punching device and method. Background Art

[0002] PVC pipe is a plastic pipe made of polyvinyl chloride resin as the main raw material, with a certain amount of stabilizer, lubricant, filler, color enhancer and other additives added, extruded by a plastic extruder and injection molded by an injection molding machine, and then cooled, solidified, shaped, inspected, packaged and other processes. PVC pipe has become one of the most common plastic pipes on the market due to its excellent performance and wide range of applications.

[0003] Punching is a common and important step in the processing of PVC pipes. Due to quality problems of PVC pipes themselves, such as poor rigidity, easy bending and deformation, or improper operation during punching, such as too fast punching speed, uneven punching force, etc., the pipes may be deformed during the punching process. The deformation of the pipe not only affects the performance and reduces the aesthetics, but also may cause the pipe to be more easily broken or damaged when subjected to force, posing a safety hazard. At the same time, if the pressure is too high, the speed is too fast or not stable enough during punching, the pipe may be plastically deformed under the action of the drill bit, thus forming burrs. Burrs will destroy the smoothness of the pipe surface, making it look rougher, affecting the overall appearance, and may even increase the fluid resistance of the pipe and affect the efficiency of fluid transmission. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a PVC pipe punching device and method, which can prevent the pipe from being deformed during punching, remove burrs generated by punching, and effectively improve the punching quality of the PVC pipe.

[0005] To this end, the technical solution of the present invention is: a PVC pipe punching device, comprising a workbench, on which an external support mechanism and an internal support mechanism are provided;

[0006] The external support mechanism is used to support and fix the PVC pipe;

[0007] The internal support mechanism includes an internal support block and a first linear module that drives the internal support block to extend into the PVC pipe. The internal support block fits the inner wall of the PVC pipe, and an escape opening is provided at the upper end of the internal support block.

[0008] The workbench is provided with a door-shaped bracket, and the door-shaped bracket is provided with a punching mechanism and a grinding mechanism;

[0009] The punching mechanism includes a drilling machine, a second linear module for driving the drilling machine to rise and fall, and a third linear module for driving the drilling machine to translate;

[0010] The grinding mechanism includes a grinding head, a fourth linear module driving the grinding head to rise and fall, a fifth linear module driving the grinding head to translate, and a rotating mechanism driving the grinding head to rotate; an inflatable airbag is arranged on the outside of the grinding head, and a grinding layer is arranged on the outside of the inflatable airbag.

[0011] On the basis of the above scheme and as a preferred scheme of the above scheme: it also includes a dust removal mechanism, the dust removal mechanism includes a dust removal hood and a dust removal pipe, the dust removal hood is placed at the avoidance opening of the inner support block, and the dust removal hood is connected to the dust removal fan through the dust removal pipe.

[0012] On the basis of the above scheme and as a preferred scheme of the above scheme: the internal support mechanism also includes an extension rod, one end of which is installed on the first linear module, and the other end is fixedly connected to the inner support block by a fastener.

[0013] On the basis of the above scheme and as a preferred scheme of the above scheme: the extension rod and the inner support block are both hollow structures, and the dust removal pipe passes through the middle of the extension rod.

[0014] On the basis of the above scheme and as a preferred scheme of the above scheme: the grinding head is provided with a vent hole, and the grinding head is connected to an inflatable device; the inflatable airbag is sleeved on the outside of the grinding head, and the inflatable device inflates or inhales air into the inflatable airbag through the vent hole.

[0015] On the basis of the above scheme and as a preferred scheme of the above scheme: the external support mechanism includes a support fixing seat, an upper pressure block and a sixth linear module that drives the upper pressure block to move downward; the support fixing seat includes an arc-shaped groove, and a negative pressure adsorption hole is provided below the arc-shaped groove; the bottom surface of the upper pressure block is an arc-shaped surface.

[0016] Another technical solution of the present invention is: a PVC pipe punching method, comprising the following steps:

[0017] 1) Fix the PVC pipe on the workbench;

[0018] 2) The inner support block extends into the PVC pipe and moves until the avoidance opening of the inner support block is directly opposite to the punching position, and the inner support block fits against the inner wall of the PVC pipe to support the punching position of the PVC pipe;

[0019] 3) driving the drilling machine to move to the top of the drilling position and drilling;

[0020] 4) After drilling, the drilling machine is moved away and the grinding head is moved to the top of the drilling position. At this time, the inflatable airbag is in the air-holding state;

[0021] 5) The grinding head moves down to the hole, inflates the airbag, and the airbag expands at the hole, and the grinding surface of the airbag wraps the hole;

[0022] 6) The grinding head rotates, and the grinding surface of the inflatable airbag grinds the hole to remove burrs;

[0023] 7) After grinding, inflate the airbag to exhaust the air, remove the grinding head from the hole, and the grinding work is completed.

[0024] On the basis of the above scheme and as a preferred scheme of the above scheme: during the punching process, the dust removal hood is located inside the PVC pipe, directly below the punching position, the dust removal fan is started, and the dust removal hood absorbs the punching waste.

[0025] On the basis of the above scheme and as a preferred scheme of the above scheme: in step 1), the PVC pipe is placed on the supporting fixing seat and fixed by negative pressure adsorption, and at the same time the upper pressing block moves downward and presses on the PVC pipe to fix the PVC pipe.

[0026] On the basis of the above scheme and as a preferred scheme of the above scheme: an inner support block of a suitable size is selected according to the inner diameter of the PVC pipe, and a grinding head of a suitable size is selected according to the size of the hole punched on the PVC pipe.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. When punching holes in PVC pipes, an inner support block is inserted into the PVC pipe. The inner support block can be moved to the punching position. The inner support block fits the inner wall of the PVC pipe to prevent the PVC pipe from deforming during punching, thereby ensuring the quality of the punching and the quality of the PVC pipe.

[0029] 2. Use a grinding head to remove burrs on the holes. An inflatable airbag is provided on the outside of the grinding head. The airbag is inserted into the hole when it is not inflated. The inflated airbag can fit the inner wall of the hole. When the grinding head rotates, the burrs on the hole can be removed to ensure the beauty and quality of the PVC pipe after punching. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present invention in the initial state;

[0031] Figure 2 for Figure 1 A partial enlarged view of

[0032] Figure 3 It is a schematic diagram of the structure of the present invention in a punching state;

[0033] Figure 4 It is a partial cross-sectional view of the initial state of the present invention;

[0034] Figure 5 It is a partial cross-sectional view of the present invention in a punching state;

[0035] Figure 6It is a partial cross-sectional view of the present invention when the punching is completed;

[0036] Figure 7 It is a partial cross-sectional view of the present invention in a grinding state;

[0037] Figure 8 It is a structural schematic diagram of the inner support block of the present invention;

[0038] Fig. 9 It is a structural schematic diagram of the support fixing seat of the present invention;

[0039] Fig.10 It is a schematic structural diagram of the grinding head of the present invention.

[0040] Marked in the figure are: workbench 1, external support mechanism 2, support fixing seat 21, upper pressure block 22, sixth linear module 23, arc groove 24, adsorption hole 25, arc surface 26, internal support mechanism 3, internal support block 31, extension rod 32, first linear module 33, avoidance opening 34, dust removal mechanism 4, dust removal hood 41, dust removal pipe 42, door-type bracket 5, punching mechanism 6, drilling machine 61, second linear module 62, third linear module 63, grinding mechanism 7, grinding head 71, fourth linear module 72, fifth linear module 73, rotating motor 74, inflatable airbag 75, vent 76, PVC pipe 8, hole 81. DETAILED DESCRIPTION

[0041] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the present invention, "several" and "a number" mean two or more, unless otherwise clearly and specifically defined.

[0043] The PVC pipe punching device of this embodiment comprises a workbench 1, on which an external support mechanism 2, an internal support mechanism 3 and a dust removal mechanism 4 are arranged; a door-shaped bracket 5 is mounted on the workbench 1, on which a punching mechanism 6 and a grinding mechanism 7 are arranged.

[0044] The external support mechanism 2 is used to support and fix the PVC pipe 8; the external support mechanism 2 includes a support fixing seat 21, an upper pressing block 22 and a sixth linear module 23 that drives the upper pressing block 22 to move up and down; the support fixing seat 21 includes an arc-shaped groove 24, and a suction hole 25 in a negative pressure state is provided below the arc-shaped groove 24; the bottom surface of the upper pressing block 22 is an arc-shaped surface 26. When the PVC pipe 8 is placed on the arc-shaped groove 24, it is sucked by the negative pressure of the suction hole 25, and it is not easy to be misplaced when punching, and the sixth linear module 24 drives the upper pressing block 22 to move downward, and the arc-shaped surface 26 presses on the PVC pipe 8 to firmly fix the PVC pipe 8.

[0045] The internal support mechanism 3 includes an internal support block 31, an extension rod 32, and a first linear module 33 that drives the internal support block 31 to extend into the PVC pipe 8. One end of the extension rod 32 is mounted on the first linear module 33, and the other end is fixedly connected to the internal support block 31 by a fastener. The extension rod 32 and the internal support block 31 are both hollow structures. The internal support block 31 fits the inner wall of the PVC pipe 8, and a clearance opening 34 is provided at the upper end of the internal support block 31. The internal support block 31 can be prepared in different sizes. According to the inner diameter of the PVC pipe, an internal support block of a suitable size is selected so that the internal support block fits the inner wall of the PVC pipe, provides support to the PVC pipe, and prevents the PVC pipe from deforming.

[0046] The dust removal mechanism 4 includes a dust removal cover 41 and a dust removal pipe 42. The dust removal cover 41 is placed at the avoidance opening 34 of the inner support block 31. The dust removal pipe 42 passes through the middle of the extension rod 32. The dust removal cover 41 is connected to the dust removal fan through the dust removal pipe 42. During the drilling and grinding process, the dust removal cover 41 can absorb waste chips to prevent the waste chips from flying around.

[0047] The punching mechanism 6 includes a drilling machine 61, a second linear module 62 for driving the drilling machine to rise and fall, and a third linear module 63 for driving the drilling machine to translate. The drilling machine 61 is an existing drilling device, which will not be described in detail.

[0048] The grinding mechanism 7 includes a grinding head 71, a fourth linear module 72 driving the grinding head 71 to rise and fall, a fifth linear module 73 driving the grinding head to translate, and a rotary motor 74 driving the grinding head 71 to rotate; an inflatable airbag 75 is provided on the outside of the grinding head 71, and a grinding layer is provided on the outside of the inflatable airbag 75. A vent 76 is provided on the grinding head 71, and the grinding head 71 is connected to an inflatable device; the inflatable airbag 75 is sleeved on the outside of the grinding head 71, and the inflatable device inflates or inhales air into the inflatable airbag 75 through the vent 76. The rotary motor 74 can drive the grinding head 71 to rotate and grind off the burrs on the hole. There are many sizes of grinding heads, which can be selected according to the size of the hole on the PVC pipe.

[0049] All the above-mentioned linear modules in this embodiment are existing linear drive module structures, which can accurately control the movement of objects into position. This is a mature technology, so it will not be described in detail.

[0050] The punching method includes the following steps:

[0051] 1) Fix the PVC pipe 8 on the workbench 1; place the PVC pipe 8 on the support fixing seat 21 and fix it by negative pressure adsorption, and at the same time, the upper pressing block 22 moves downward and presses on the PVC pipe 8 to fix the PVC pipe 8;

[0052] 2) Select an inner support block 31 of a suitable size according to the inner diameter of the PVC pipe 8, extend the inner support block 31 into the PVC pipe 8, and move it until the avoidance opening of the inner support block 31 is directly opposite to the punching position, and the inner support block 31 fits the inner wall of the PVC pipe 8 to support the punching position of the PVC pipe 8;

[0053] 3) Driving the drilling machine 61 to move to the top of the drilling position and drilling; during the drilling process, the dust removal cover 41 is located inside the PVC pipe, just below the drilling position, the dust removal fan is started, and the dust removal cover absorbs the drilling waste;

[0054] 4) After the drilling is completed, the drilling machine 61 is moved away, and a grinding head 71 of a suitable size is selected according to the size of the hole on the PVC pipe. The grinding head 71 is moved to the position just above the drilling position, and the inflatable airbag 75 is in a holding state at this time;

[0055] 5) The grinding head 71 moves downward to the position where it extends into the hole 81, and inflates the inflatable airbag 75, so that the inflatable airbag 75 expands at the hole 81, and the grinding surface of the inflatable airbag 75 wraps around the hole;

[0056] 6) The grinding head 71 rotates, and the grinding surface of the inflatable airbag 75 grinds the hole to remove burrs;

[0057] 7) After grinding, the inflatable airbag 75 is exhausted, and the grinding head 71 is taken out from the hole, completing the grinding work.

[0058] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A PVC pipe punching device, characterized in that: It includes a workbench, on which an external supporting mechanism and an internal supporting mechanism are arranged; The external support mechanism is used to support and fix the PVC pipe; The internal support mechanism includes an internal support block and a first linear module that drives the internal support block to extend into the PVC pipe. The internal support block fits the inner wall of the PVC pipe, and an escape opening is provided at the upper end of the internal support block. The workbench is provided with a door-shaped bracket, and the door-shaped bracket is provided with a punching mechanism and a grinding mechanism; The punching mechanism includes a drilling machine, a second linear module for driving the drilling machine to rise and fall, and a third linear module for driving the drilling machine to translate; The grinding mechanism includes a grinding head, a fourth linear module driving the grinding head to rise and fall, a fifth linear module driving the grinding head to translate, and a rotating mechanism driving the grinding head to rotate; an inflatable airbag is arranged on the outside of the grinding head, and a grinding layer is arranged on the outside of the inflatable airbag.

2. A PVC pipe punching device as claimed in claim 1, characterized in that: It also includes a dust removal mechanism, which includes a dust removal hood and a dust removal pipe. The dust removal hood is placed at the escape opening of the inner support block, and the dust removal hood is connected to the dust removal fan through the dust removal pipe.

3. A PVC pipe punching device as claimed in claim 2, characterized in that: The internal support mechanism also includes an extension rod, one end of which is mounted on the first linear module, and the other end of which is fixedly connected to the internal support block via a fastener.

4. A PVC pipe punching device as claimed in claim 3, characterized in that: The extension rod and the inner support block are both hollow structures, and the dust removal pipe passes through the middle of the extension rod.

5. A PVC pipe punching device as claimed in claim 1, characterized in that: The grinding head is provided with a vent hole, and the grinding head is connected to an inflatable device; the inflatable airbag is sleeved on the outside of the grinding head, and the inflatable device inflates or inhales air into the inflatable airbag through the vent hole.

6. A PVC pipe punching device as claimed in claim 1, characterized in that: The external support mechanism includes a support fixing seat, an upper pressing block and a sixth linear module for driving the upper pressing block to move downward; The support fixing seat comprises an arc-shaped groove, and a negative pressure adsorption hole is arranged below the arc-shaped groove; and the bottom surface of the upper pressing block is an arc-shaped surface.

7. A method for punching holes in a PVC pipe, characterized in that: The following steps are involved: 1) Fix the PVC pipe on the workbench; 2) The inner support block extends into the PVC pipe and moves until the avoidance opening of the inner support block is facing the drilling position, and The inner support block fits the inner wall of the PVC pipe and supports the punching position of the PVC pipe; 3) driving the drilling machine to move to the top of the drilling position and drilling; 4) After drilling, the drilling machine is moved away and the grinding head is moved to the top of the drilling position. At this time, the inflatable airbag is in the air-holding state; 5) The grinding head moves down to the hole, inflates the airbag, and the airbag expands at the hole. The polished surface of the inflatable airbag wraps around the hole; 6) The grinding head rotates, and the grinding surface of the inflatable airbag grinds the hole to remove burrs; 7) After grinding, inflate the airbag to exhaust the air, remove the grinding head from the hole, and the grinding work is completed.

8. A PVC pipe punching method as claimed in claim 7, characterized in that: During the drilling process, the dust hood is located inside the PVC pipe, just below the drilling position, the dust removal fan is started, and the dust removal hood absorbs the drilling waste.

9. A PVC pipe punching method as claimed in claim 7, characterized in that: In step 1), the PVC pipe is placed on the supporting fixing seat and fixed by negative pressure adsorption. At the same time, the upper pressing block moves downward and presses on the PVC pipe to fix the PVC pipe.

10. A PVC pipe punching method as claimed in claim 7, characterized in that: Select an inner support block of appropriate size according to the inner diameter of the PVC pipe, and select a grinding head of appropriate size according to the size of the hole punched on the PVC pipe.

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