Swing type cutting tool bit for heat pipe

Abstract

The utility model discloses a heat pipe swing type cutting tool bit which comprises a driving unit, a shifting fork connected with the driving unit, a tool bit body and a tool feeding sleeve, a feeding bearing is arranged on the tool feeding sleeve, the shifting fork can drive the tool feeding sleeve to move along the tool bit body by pushing an outer ring of the feeding bearing, and the heat pipe swing type cutting tool bit further comprises a swing arm arranged between the tool bit body and the tool feeding sleeve. One end of the swing arm is hinged to the tool bit, a blade assembly is arranged at the other end of the swing arm, an elastic piece enabling the swing arm to reset is arranged between the swing arm and the tool bit, and when the tool feeding sleeve moves, the swing arm can be extruded to swing so as to drive the blade assembly to move in the direction of a workpiece. The shifting fork is not in direct contact with the cutter feeding sleeve and is linked with the cutter feeding sleeve through the feeding bearing, so that friction between the shifting fork and the cutter feeding sleeve is avoided, the service life of parts is prolonged, the maintenance frequency is reduced, the production time is prolonged, and the production cost is correspondingly reduced.

Description

Technical Field

[0001] The utility model relates to a processing device for a heat exchange copper tube, in particular to a swing-type cutting head for a heat tube. Background Art

[0002] Copper tubes are widely used as heat exchange tubes in refrigeration equipment such as air conditioners. However, the copper tubes need to be cut into appropriate lengths before use, so some cutting equipment has appeared on the market. The blade assembly of the above equipment is eccentrically mounted on the cutter head, and the blade assembly can rotate with the cutter head. There is a through hole in the center of the cutter head, and the copper tube passes through the hole. A feed sleeve is also provided on the cutter head, and the feed sleeve rotates with the cutter head but can move along the cutter head. The driving cylinder can push the feed sleeve through the push rod so that it can move linearly along the cutter head. There is an inclined block and a knife rod fixed with the inclined block on the blade assembly. The blade is arranged on the knife rod through a bearing, and the inclined block is located in the slide groove of the cutter head and the inclined surface is exposed outside the cutter head through the elasticity of the spring in the slide groove. When cutting is required, the feed sleeve is pushed by the driving cylinder and the push rod to move, thereby squeezing the inclined surface, so that the inclined block compresses the spring and moves toward the center of the cutter head. The inclined block drives the blade to move at the same time, so that the blade moves to a position in contact with the copper tube and cuts off the copper tube as the cutter head rotates around the copper tube.

[0003] However, the friction between the feed sleeve and the push rod of the above-mentioned cutting equipment is large, which makes the above-mentioned components easy to wear and difficult to replace. Therefore, the present application designs a pipe bevel cutting tool head structure to solve the above-mentioned problem. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a heat pipe swing-type cutting head.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A heat pipe swing cutting head comprises a driving unit, a shift fork connected to the driving unit, a cutter head and a feed sleeve, wherein the feed sleeve is provided with a feed bearing, the shift fork can drive the feed sleeve to move along the cutter head by pushing the outer ring of the feed bearing, and further comprises a swing arm arranged between the cutter head and the feed sleeve, one end of the swing arm is hinged to the cutter head, the other end of the swing arm is provided with a blade assembly, an elastic member for resetting the swing arm is arranged between the swing arm and the cutter head, and the feed sleeve can squeeze the swing arm to swing when moving, thereby driving the blade assembly to move toward the workpiece.

[0007] The end of the shift fork is provided with a groove, and the outer ring is located in the groove.

[0008] The feed sleeve comprises an end portion, a mounting section and a connecting section with successively decreasing diameters. The feed bearing is arranged on the mounting section, and a nut is provided on the connecting section. The feed bearing is fixed to the mounting section through the end portion and the nut.

[0009] An arm slot is provided on the swing arm, a round rod is provided in the arm slot, and the feed sleeve makes the swing arm swing by squeezing the round rod.

[0010] A cutter head spindle is arranged in the inner hole of the cutter head, and the cutter head spindle is connected to the cutter head through a bearing, and a tube-holding joint is arranged at the inner hole end of the cutter head spindle, and the tube-holding joint has a pipe hole.

[0011] The blade assembly comprises a blade shaft arranged at the end of a swing arm, and a blade arranged on the blade shaft through a bearing.

[0012] The cutter head is provided with a mounting groove, and the inner wall of the cutter feed sleeve is provided with a guide groove, one side of the swing arm is located in the mounting groove, and the other side of the swing arm is located in the guide groove.

[0013] A guiding inclined surface is arranged in the guide groove.

[0014] The driving unit is a cylinder, and a limiting rod and a limiting plate connected to the limiting rod are provided on the cylinder, and the shift fork is limited in its moving position by the limiting plate.

[0015] The beneficial effect of the utility model is that the feed sleeve of the utility model is provided with a feed bearing, and the shift fork can drive the feed sleeve to move along the cutter head by pushing the outer ring of the feed bearing. The shift fork of the present application does not directly contact the feed sleeve, but is linked with the feed sleeve through the feed bearing, thereby avoiding friction between the shift fork and the feed sleeve, extending the life of the components, reducing the number of maintenance times, increasing production time, and correspondingly reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is the overall structure diagram of the utility model;

[0018] Figure 2 It is a cross-sectional structural diagram of the utility model;

[0019] Figure 3 It is an exploded structural diagram of the utility model. DETAILED DESCRIPTION

[0020] The advantages and features of the present disclosure and its implementation methods will be explained by the following embodiments described with reference to the accompanying drawings. However, the present disclosure can be embodied in different forms and should not be interpreted as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure will be comprehensive and complete, and will fully convey the scope of the present disclosure to those skilled in the art. In addition, the present disclosure is limited only by the scope of the claims.

[0021] The shapes, sizes, ratios, angles and numbers disclosed in the drawings for describing the embodiments of the present disclosure are only examples, and therefore the present disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, when the detailed description of the relevant known functions or configurations is determined to be unnecessary to blur the focus of the present disclosure, the detailed description will be omitted. In the case of using "including", "having" and "comprising" described in this specification, other parts may be added unless "only" is used. Unless otherwise indicated, the terms in the singular may include plural forms.

[0022] When explaining an element, although not explicitly described, the element is understood to include a range of error.

[0023] When describing a positional relationship, for example, when the positional relationship is described as "on," "above," "below," and "adjacent to," unless "immediately" or "directly" is used, one or more parts may be arranged between two other parts.

[0024] When describing a time relationship, for example, when a time sequence is described as “after,” “subsequently,” “next,” and “before,” discontinuous cases may be included unless “just” or “directly” is used.

[0025] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from other elements. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present disclosure.

[0026] As those skilled in the art can fully understand, the features of the different embodiments of the present disclosure can be coupled or combined with each other in part or in whole, and can cooperate with each other in various ways and be driven technically. The embodiments of the present disclosure can be performed independently of each other, or can be performed together in a mutually dependent relationship.

[0027] Reference Figures 1 to 3The utility model discloses a heat pipe swing cutting cutter head, comprising a driving unit 1, a fork 2 connected to the driving unit 1, a cutter head 3 and a feed sleeve 4, the feed sleeve 4 is provided with a feed bearing 5, the fork 2 can drive the feed sleeve 4 to move along the cutter head 3 by pushing the outer ring of the feed bearing 5, the driving unit 1 and the driving structure are the same as before and have not been improved, so their structure is not described in detail, the driving unit 1 adopts a cylinder, and the driving structure adopts a belt drive, in the above structure, when the cutter head 3 and the feed sleeve 4 rotate together, the inner ring of the feed bearing 5 will also rotate with the cutter head 3 and the feed sleeve 4, and the outer ring of the feed bearing 5 will contact with the fork 2, so that the fork 2 will not directly contact with the feed sleeve 4, thereby avoiding friction loss, and the inner ring and the outer ring of the feed bearing 5 are through the rolling friction of the ball, and the rolling friction is much smaller than the friction of the contact between the fork 2 and the feed sleeve 4. As a specific structure, a groove 6 is provided at the end of the fork 2, and the outer ring is located in the groove 6, so that the outer ring can be squeezed by the groove walls on both sides of the groove 6 to achieve linear forward and backward movement. The above structure is simple and easy to install. The cutter head 3 is driven to rotate by a belt transmission system. This part is not an improvement point of the present application, so it is not described in detail.

[0028] As shown in the figure, the specific installation structure of the feed bearing 5 is that the feed sleeve 4 includes an end portion, a mounting section and a connecting section with successively decreasing diameters. The feed bearing 5 is arranged on the mounting section, and a nut 7 is provided on the connecting section. The connecting section has a thread that cooperates with the nut 7. The nut 7 is preferably a self-locking round nut 7. The feed bearing 5 is fixed to the mounting section through the end portion and the nut 7. When the nut 7 is screwed in with the connecting section, it will squeeze the inner ring of the feed bearing 5 and clamp the inner ring together with the step surface formed by the intersection of the end portion and the mounting section to fix the feed bearing 5 and the feed sleeve 4 as a whole. The above structure is simple and easy to install, so that when the feed bearing 5 moves, it can drive the feed sleeve 4 to move.

[0029] As shown in the figure, the present application has redesigned the moving structure of the blade assembly, from the previous sliding type to the current swing type. The specific structure is: it also includes a swing arm 8 arranged between the cutter head 3 and the feed sleeve 4, and one end of the swing arm 8 is hinged to the cutter head 3, and the other end of the swing arm 8 is provided with a blade assembly, and an elastic member 9 is provided between the swing arm 8 and the cutter head 3 to reset the swing arm 8. When the feed sleeve 4 moves, it can squeeze the swing arm 8 to swing and drive the blade assembly to move toward the workpiece. Through the above structure, the friction structure of the inclined block and the slide groove is avoided. If the precision of the inclined block and the slide groove is not high enough, it is easy to cause the inclined block to slide and get stuck, resulting in unsmooth feed, and the sliding friction wear is large, resulting in a short service life. In the swing feed of the present application, there is friction only at the hinge position of the swing arm 8 and the cutter head 3, and the friction force is small, thereby extending the life of the swing arm 8 and the cutter head 3, and it is not easy to cause the swing arm 8 to get stuck. As a further preferred structure, an arm slot 10 is provided on the swing arm 8, and a round rod 11 is provided in the arm slot 10. The feed sleeve 4 makes the swing arm 8 swing by squeezing the round rod 11, so that the friction between the feed sleeve 4 and the swing arm 8 is also reduced.

[0030] The cutter head 3 is provided with a mounting groove 12, and the inner wall of the cutter feed sleeve 4 is provided with a guide groove 13, one side of the swing arm 8 is located in the mounting groove 12, and the other side of the swing arm 8 is located in the guide groove 13. Through the above structure, not only the swing arm 8 is installed, but also the cutter feed sleeve 4 realizes synchronous rotation with the cutter head 3 through the swing arm 8. As a preferred structure, a guiding inclined surface is provided in the guide groove 13, and the blade assembly is moved toward the workpiece by squeezing the guiding inclined surface and the swing arm, and the blade assembly is reset by moving away from the workpiece through the elastic member 9, and the elastic member 9 is preferably a spring.

[0031] As shown in the figure, a cutter head shaft 14 is provided in the inner hole of the cutter head 3, and the cutter head shaft 14 is connected to the cutter head 3 through a bearing, and a trustee joint 15 is provided at the inner hole end of the cutter head shaft 14, and the trustee joint 15 is threadedly connected to the inner hole, and the trustee joint 15 has a pipe hole, and the cutter head shaft 14 is fixed to the cutting seat, so that the cutter head 3 can rotate around the cutter head shaft 14, and the trustee joint 15 is used to support the copper tube extending through the pipe hole, so as to reduce the bending deformation of the copper tube during cutting.

[0032] As shown in the figure, the blade assembly includes a blade shaft 16 arranged at the end of the swing arm 8, and a blade 17 arranged on the blade shaft 16 through a bearing. The above structure is the installation structure of the blade 17, and the rotation of the blade 17 is achieved through the above structure.

[0033] As shown in the figure, the driving unit 1 is a cylinder, which is provided with a limit rod 18 and a limit plate 19 connected to the limit rod 18. The moving position of the fork 2 is limited by the limit plate 19, and the movement of the fork 2 is limited by the limit plate 19. As a further structure, the limit plate 19 also has a threaded screw 20, and the end of the fork 2 is abutted against the end of the screw 20, and the limit distance is adjusted by adjusting the screw 20.

[0034] When the heat pipe swing cutting blade head of the present application is used on a production line, a single blade head can be used alone, or multiple blade heads can be used together in parallel.

[0035] The above is a detailed introduction to a heat pipe swinging cutting head provided by an embodiment of the utility model. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model; at the same time, for general technical personnel in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A heat pipe swing cutting blade head, comprising a driving unit, a shift fork connected to the driving unit, a blade head and a feed sleeve, characterized in that: The feed sleeve is provided with a feed bearing, and the shift fork can drive the feed sleeve to move along the cutter head by pushing the outer ring of the feed bearing. It also includes a swing arm arranged between the cutter head and the feed sleeve, and one end of the swing arm is hinged to the cutter head, and the other end of the swing arm is provided with a blade assembly, and an elastic member for resetting the swing arm is provided between the swing arm and the cutter head. When the feed sleeve moves, it can squeeze the swing arm to swing and drive the blade assembly to move toward the workpiece.

2. The heat pipe swing cutting head according to claim 1, characterized in that: The end of the shift fork is provided with a groove, and the outer ring is located in the groove.

3. The heat pipe swing cutting blade according to claim 1, characterized in that: The feed sleeve comprises an end portion, a mounting section and a connecting section with successively decreasing diameters. The feed bearing is arranged on the mounting section, and a nut is provided on the connecting section. The feed bearing is fixed to the mounting section through the end portion and the nut.

4. The heat pipe swing cutting blade according to claim 3, characterized in that: An arm slot is provided on the swing arm, a round rod is provided in the arm slot, and the feed sleeve makes the swing arm swing by squeezing the round rod.

5. The heat pipe swing cutting blade according to claim 1, characterized in that: A cutter head spindle is arranged in the inner hole of the cutter head, and the cutter head spindle is connected to the cutter head through a bearing, and a tube-holding joint is arranged at the inner hole end of the cutter head spindle, and the tube-holding joint has a pipe hole.

6. The heat pipe swing cutting blade according to claim 3, characterized in that: The blade assembly comprises a blade shaft arranged at the end of a swing arm, and a blade arranged on the blade shaft through a bearing.

7. The heat pipe swing cutting blade according to claim 3, characterized in that: The cutter head is provided with a mounting groove, and the inner wall of the cutter feed sleeve is provided with a guide groove, one side of the swing arm is located in the mounting groove, and the other side of the swing arm is located in the guide groove.

8. The heat pipe swing cutting blade according to claim 7, characterized in that: A guiding inclined surface is arranged in the guide groove.

9. The heat pipe swing cutting blade according to claim 1, characterized in that: The driving unit is a cylinder, and a limiting rod and a limiting plate connected to the limiting rod are provided on the cylinder, and the shift fork is limited in its moving position by the limiting plate.

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