Pipe contracting machine

Abstract

The utility model discloses a pipe contracting machine. The pipe contracting machine is used for conducting necking treatment on a to-be-compressed pipe section of a pipe fitting. The pipe shrinking machine comprises a rack, an elastic piece, a driving piece and an abutting and pushing assembly. The rack is provided with a mounting through hole, and a to-be-compressed pipe section of the pipe fitting extends into the mounting through hole. The elastic piece is arranged in the mounting through hole and located between the hole wall face of the mounting through hole and the outer side face of the to-be-compressed pipe section of the pipe fitting. The driving piece is installed on the rack. The pushing assembly is arranged at the driving end of the driving piece. The driving end of the driving part is configured to push the abutting and pushing assembly to move towards the mounting through hole till the elastic part is extruded, so that the elastic part generates elastic deformation in the direction perpendicular to the hole axis of the mounting through hole so as to extrude the to-be-compressed pipe section of the pipe fitting. By means of the design, machining errors caused by manual operation can be effectively reduced, the possibility that the surfaces of the pipe fittings are scratched is reduced, the product yield is increased, in addition, personnel investment can be effectively reduced, and industrial injuries and cost are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of part processing equipment, in particular to a pipe shrinking machine. BACKGROUND

[0002] In the related art, a pipe such as a front leg pipe of a child stroller is usually knocked by a hammer or extruded by other clamping tools to perform a necking process. During the operation, the force of the operator is not uniform and the operation intensity is large, which can easily cause surface scratches of the pipe, unstable product quality, and personal injuries. CONTENT OF THE UTILITY MODEL

[0003] The pipe shrinking machine provided by the embodiments of the present application can solve the problems of surface scratches of the pipe, unstable product quality, and personal injuries caused by the non-uniform force of the operator and the large operation intensity in the related art.

[0004] The pipe shrinking machine provided by the embodiments of the present application; the pipe shrinking machine is used for performing a necking process on a to-be-compressed pipe section of a pipe, and comprises a rack, an elastic member, a driving member, and a pushing assembly. The rack has a mounting through hole, the to-be-compressed pipe section of the pipe extends into the mounting through hole, the elastic member is arranged in the mounting through hole and located between the hole wall surface of the mounting through hole and the outer side surface of the to-be-compressed pipe section of the pipe, the driving member is installed on the rack, the pushing assembly is arranged on the driving end of the driving member, and the driving end of the driving member is configured to push the pushing assembly to move towards the mounting through hole to extrude the elastic member, so that the elastic member is elastically deformed in a direction perpendicular to the hole axis of the mounting through hole to extrude the to-be-compressed pipe section of the pipe.

[0005] Based on the pipe shrinking machine provided by the embodiments of the present application, the driving member, the pushing assembly, and the elastic member are designed to cooperate with each other, so that the pushing assembly moves towards the mounting through hole under the action of the driving end of the driving member and extrudes the elastic member, and the elastic member is elastically deformed in a direction perpendicular to the hole axis of the mounting through hole under the extrusion action of the pushing assembly, and the to-be-compressed pipe section of the pipe is deformed under the extrusion action of the elastic deformation of the elastic member to achieve the purpose of necking. This operation is simple, batch production is realized, processing errors caused by manual operation can be effectively reduced, the possibility of scratching the surface of the pipe can be reduced, the yield of the product can be improved, and personnel investment, injuries, and costs can be effectively reduced.

[0006] In some embodiments, the pushing assembly comprises a first pushing member and a second pushing member; the first pushing member is arranged on the driving end of the driving member; the second pushing member is arranged on one end of the first pushing member close to the mounting through hole; the driving end of the driving member pushes the first pushing member to move towards the mounting through hole to drive the second pushing member to extrude the elastic member, so that the elastic member is elastically deformed; the elastic deformation comprises the first elastic deformation.

[0007] Based on the above embodiment, by designing the first pushing member and the second pushing member, the first pushing member is moved towards the mounting hole under the action of the driving end of the driving member to drive the second pushing member to also move towards the mounting hole, the second pushing member extrudes the elastic member, and the elastic member is suitable for generating the first elastic deformation in the direction perpendicular to the hole axis of the mounting hole under the extrusion action of the second pushing member, and the to-be-compressed pipe section of the pipe member is deformed under the extrusion action of the first elastic deformation generated by the elastic member to achieve the purpose of necking, so as to position the to-be-assembled part in the pipe member to assemble the assembly. Such operation is simple, batch production is realized, processing errors caused by manual work can be effectively reduced, the possibility of scratching the surface of the pipe member is reduced, the yield of the product is improved, in addition, personnel investment can be effectively reduced, and work injuries and costs are reduced.

[0008] In some embodiments, the pushing assembly further comprises an adjusting cylinder seat, the adjusting cylinder seat covers the driving end of the driving member and is fixedly connected with the driving end of the driving member, and the adjusting cylinder seat is configured to be adjustable in position along the direction in which the hole axis of the mounting hole is located relative to the driving end of the driving member; the end of the first pushing member away from the mounting hole extends into the cavity of the adjusting cylinder seat, the first pushing member is in sliding connection with the adjusting cylinder seat, and the end of the first pushing member close to the mounting hole is in sliding connection with the second pushing member; when the adjusting cylinder seat is adjusted to be lower than the preset position along the direction in which the hole axis of the mounting hole is located relative to the driving end of the driving member, the driving end of the driving member is moved towards the mounting hole along the direction in which the hole axis of the mounting hole is located to drive the first pushing member to push the second pushing member to extrude the elastic member, so that the elastic member generates the first elastic deformation; when the adjusting cylinder seat is adjusted to be higher than the preset position along the direction in which the hole axis of the mounting hole is located relative to the driving end of the driving member, the driving end of the driving member is moved towards the mounting hole along the direction in which the hole axis of the mounting hole is located to drive the adjusting cylinder seat to push the second pushing member to extrude the elastic member, so that the elastic member generates the second elastic deformation; the elastic deformation includes the second elastic deformation, and the second elastic deformation is greater than the first elastic deformation.

[0009] Based on the above embodiment, by designing the adjusting cylinder seat, by changing the position of the adjusting cylinder seat relative to the driving end of the driving member along the direction of the hole axis of the mounting through hole, and adjusting the adjusting cylinder seat to be lower than the above-mentioned preset position, the driving end of the driving member drives the first pushing member to push the second pushing member to extrude the elastic member and make the elastic member produce a smaller first elastic deformation, and the to-be-compressed pipe section of the pipe member is deformed under the extrusion of the smaller first elastic deformation of the elastic member, so as to achieve the purpose of necking. By designing the adjusting cylinder seat, by changing the position of the adjusting cylinder seat relative to the driving end of the driving member along the direction of the hole axis of the mounting through hole, and adjusting the adjusting cylinder seat to be higher than the above-mentioned preset position, the driving end of the driving member drives the adjusting cylinder seat to push the second pushing member to extrude the elastic member and make the elastic member produce a larger second elastic deformation, and the to-be-compressed pipe section of the pipe member is deformed under the extrusion of the larger second elastic deformation of the elastic member, so as to achieve the purpose of necking.

[0010] In some embodiments, the driving member includes an oil cylinder mounted on the rack, the pushing column of the oil cylinder serves as the driving end of the driving member, and the pushing column of the oil cylinder can do telescopic motion along the direction of the hole axis of the mounting through hole; the adjusting cylinder seat is threadedly connected with the pushing column of the oil cylinder.

[0011] Based on the above embodiment, by designing the driving member as an oil cylinder, the adjusting cylinder seat is threadedly connected with the pushing column of the oil cylinder, and by rotating the adjusting cylinder seat, the position of the adjusting cylinder seat relative to the pushing column of the oil cylinder along the direction of the hole axis of the mounting through hole can be adjusted, which is simple in structure and convenient to operate.

[0012] In some embodiments, the outer side cylinder wall surface of the adjusting cylinder seat is provided with a clamping position, and the clamping position is used to butt joint with an external component, so that the position of the adjusting cylinder seat relative to the pushing column of the oil cylinder along the direction of the hole axis of the mounting through hole is adjustable under the action of the external component.

[0013] Based on the above embodiment, by designing the clamping position on the outer side cylinder wall surface of the adjusting cylinder seat to butt joint with the external component, the operator can rotate the adjusting cylinder seat by means of the external component to change the position of the adjusting cylinder seat relative to the pushing column of the oil cylinder along the direction of the hole axis of the mounting through hole, so as to facilitate the rotation of the adjusting cylinder seat and make the overall operation more convenient.

[0014] In some embodiments, the end face of the second pushing piece away from the side of the mounting through hole is provided with a groove, and the end of the first pushing piece close to the mounting through hole extends into the groove; when the adjusting cylinder seat is adjusted to be lower than the preset position along the direction of the hole axis of the mounting through hole relative to the driving end of the driving piece, the end face of the first pushing piece facing the side of the mounting through hole abuts against the groove bottom face; when the adjusting cylinder seat is adjusted to be higher than the preset position along the direction of the hole axis of the mounting through hole relative to the driving end of the driving piece, the end face of the adjusting cylinder seat facing the side of the mounting through hole abuts against the end face of the second pushing piece away from the side of the mounting through hole.

[0015] Based on the above embodiments, by designing the groove on the end face of the second pushing piece away from the side of the mounting through hole, when the adjusting cylinder seat is adjusted to be lower than the preset position along the direction of the hole axis of the mounting through hole relative to the driving end of the driving piece, the end face of the first pushing piece facing the side of the mounting through hole abuts against the groove bottom face, so that the first pushing piece can effectively transmit force to the second pushing piece. By designing the groove on the end face of the second pushing piece away from the side of the mounting through hole, when the adjusting cylinder seat is adjusted to be higher than the preset position along the direction of the hole axis of the mounting through hole relative to the driving end of the driving piece, the end face of the adjusting cylinder seat facing the side of the mounting through hole abuts against the end face of the second pushing piece away from the side of the mounting through hole, so that the adjusting cylinder seat can effectively transmit force to the second pushing piece.

[0016] In some embodiments, the end of the second pushing piece close to the mounting through hole extends into the mounting through hole, and the outer side face of the second pushing piece is attached to the hole wall face of the mounting through hole; and / or, the end of the first pushing piece close to the mounting through hole extends into the groove, and the outer side face of the first pushing piece is attached to the groove side face; and / or, the outer side face of the first pushing piece is attached to the inner side face of the adjusting cylinder seat.

[0017] Based on the above embodiments, by designing the outer side face of the second pushing piece to be attached to the hole wall face of the mounting through hole, the radial deviation of the second pushing piece relative to the rack along the hole axis of the mounting through hole can be limited, so as to ensure the stability of the movement of the second pushing piece along the direction of the hole axis of the mounting through hole; and / or, by designing the outer side face of the first pushing piece to be attached to the groove side face, the radial deviation of the second pushing piece relative to the first pushing piece (or the radial deviation of the first pushing piece relative to the second pushing piece) along the hole axis of the mounting through hole can be limited, so as to ensure the stability of the movement of the first pushing piece and the second pushing piece along the direction of the hole axis of the mounting through hole; and / or, by designing the outer side face of the first pushing piece to be attached to the inner side face of the adjusting cylinder seat, the radial deviation of the first pushing piece relative to the adjusting cylinder seat along the hole axis of the mounting through hole can be limited, so as to ensure the stability of the movement of the first pushing piece along the direction of the hole axis of the mounting through hole.

[0018] In some embodiments, the pipe shrinking machine further comprises a first sensor and a controller; the first sensor is installed on the frame, and is configured to detect whether the driving end of the driving member moves to a position and generate a corresponding electrical signal; the controller is installed on the frame, and is electrically connected with the first sensor and the driving member, and is configured to perform corresponding operations according to the electrical signal.

[0019] Based on the above-mentioned embodiments, by designing the controller and the first sensor, the controller is electrically connected with the first sensor and the driving member, and the controller can perform corresponding operations according to the electrical signal generated by the first sensor, so as to realize the automatic control of the pipe shrinking machine.

[0020] In some embodiments, the elastic member comprises a rubber ring.

[0021] Based on the above-mentioned embodiments, by designing the elastic member as a rubber ring, the rubber ring is arranged around the circumferential direction of the pipe section to be compressed of the pipe, so that the elastic deformation of the elastic member under the extrusion of the pushing assembly can form extrusion to the circumferential direction of the pipe section to be compressed of the pipe, which can effectively enhance the connection tightness between the assembly member and the pipe in the assembly, so as to further improve the yield of the assembly.

[0022] In some embodiments, the frame comprises a bearing table and a bearing member; the bearing table has a fixing hole, and the driving member is installed on the bearing table; the bearing member is connected with the bearing table corresponding to the fixing hole, and has an installation through hole, and is configured to be adjustable in position along the direction of the hole axis of the installation through hole relative to the bearing table.

[0023] Based on the above-mentioned embodiments, by designing the bearing table, the bearing table is used to install components such as the driving member; by designing the bearing member to be adjustable in position along the direction of the hole axis of the installation through hole relative to the bearing table, in the case that the movement stroke of the driving end of the driving member moving along the direction of the hole axis of the installation through hole towards the installation through hole is unchanged, by adjusting the position of the bearing member along the direction of the hole axis of the installation through hole relative to the bearing table, the size of the elastic deformation of the elastic member is changed to adapt to the pipe section to be compressed of the pipe of different sizes for necking processing, so as to improve the applicability of the pipe shrinking machine.

[0024] In some embodiments, the hole wall surface of the fixing hole is provided with an internal thread, and the outer side surface of the bearing member is provided with an external thread, and the bearing member is connected with the bearing table by matching the external thread with the internal thread.

[0025] Based on the above-mentioned embodiments, by rotating the bearing member, the position of the bearing member along the direction of the hole axis of the installation through hole relative to the bearing table can be adjusted, which is simple in structure and convenient to operate.

[0026] In some embodiments, the tube shrinking machine further includes a second sensor installed on the supporting platform, and the second sensor is configured to detect whether the tube section to be compressed of the tube fitting extends into the installation through hole.

[0027] Based on the above embodiment, a second sensor is designed to detect whether the pipe section to be compressed of the pipe fitting extends into the installation through hole, so as to realize automatic control of the pipe shrinking machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 This is a structural diagram of a tube shrinking machine in one embodiment of the present application;

[0030] Figure 2 This is a structural schematic diagram of a wheel center nail as a component to be assembled inserted into a pipe section to be compressed of a front leg pipe of a children's vehicle as a pipe fitting in one embodiment of the present application;

[0031] Figure 3 This is a schematic diagram of a partial cross-sectional structure of the tube shrinking machine before the shrinking operation is performed when the adjustment barrel seat is adjusted to below a preset position in one embodiment of the present application;

[0032] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0033] Figure 5 for Figure 3 A schematic diagram of the partial cross-sectional structure of the tube shrinking machine after the tube shrinking operation;

[0034] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at B in the middle;

[0035] Figure 7 This is a schematic diagram of a partial cross-sectional structure of the tube shrinking machine before the shrinking operation is performed, when the adjustment barrel seat in one embodiment of the present application is adjusted to be just at a preset position;

[0036] Figure 8 for Figure 7 Schematic diagram of the enlarged structure at C in the middle;

[0037] Figure 9 for Figure 7 A schematic diagram of the partial cross-sectional structure of the tube shrinking machine after the tube shrinking operation;

[0038] Figure 10 For Figure 9 enlarged view of the structure at D in the middle;

[0039] Figure 11 For the adjusting cylinder seat in an embodiment of the present application is adjusted to be higher than the preset position, the partial cross-sectional structure schematic diagram of the pipe reducing machine after the necking operation is carried out;

[0040] Figure 12 For Figure 11 enlarged view of the structure at E in the middle;

[0041] Figure 13 For the structure schematic diagram of the pipe reducing machine in another view in an embodiment of the present application;

[0042] Figure 14 For Figure 13 enlarged view of the structure at F in the middle.

[0043] Reference signs: 1, pipe reducing machine; 10, machine frame; 11, bearing table; 11a, fixing hole; 12, bearing; 12a, mounting through hole; 20, elastic member; 30, driving member; 31, oil cylinder; 40, pushing assembly; 41, first pushing member; 42, second pushing member; 42a, groove; 43, adjusting cylinder seat; 43a, clamping position; 50, first inductor; 60, second inductor; 2, pipe; 2a, to-be-compressed pipe section; 3, to-be-assembled part. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0045] Please refer to Figures 1-6 the present application proposes a pipe reducing machine 1, which can effectively reduce the processing error caused by manual operation, reduce the possibility of scratching the surface of the pipe 2, improve the yield of products, and effectively reduce the personnel investment, reduce the injury and cost.

[0046] The pipe reducing machine 1 is used for reducing the pipe section 2a of the pipe 2; the pipe reducing machine 1 comprises a rack 10, an elastic member 20, a driving member 30 and a pushing assembly 40. The rack 10 has a mounting through hole 12a, and the pipe section 2a of the pipe 2 extends into the mounting through hole 12a. The elastic member 20 is arranged in the mounting through hole 12a, and the elastic member 20 is located between the hole wall surface of the mounting through hole 12a and the outer side surface of the pipe section 2a of the pipe 2. The driving member 30 is mounted on the rack 10. The pushing assembly 40 is arranged on the driving end of the driving member 30. The driving end of the driving member 30 is configured to push the pushing assembly 40 towards the mounting through hole 12a to extrude the elastic member 20, so that the elastic member 20 is elastically deformed in the direction perpendicular to the hole axis of the mounting through hole 12a to extrude the pipe section 2a of the pipe 2.

[0047] The specific structure of the pipe reducing machine 1 will be introduced below. Figures 1-14 The specific structure of the pipe reducing machine 1 will be introduced below.

[0048] As shown in Figures 1-2 , the pipe reducing machine 1 is used for reducing the pipe section 2a of the pipe 2. It should be noted that the pipe section 2a of the pipe 2 can be inserted with the assembly part 3 or not; when the pipe section 2a of the pipe 2 is not inserted with the assembly part 3, the pipe diameter of the pipe section 2a of the pipe 2 is reduced after being processed by the pipe reducing machine 1; when the pipe section 2a of the pipe 2 is inserted with the assembly part 3, the pipe diameter of the pipe section 2a of the pipe 2 is reduced after being processed by the pipe reducing machine 1, and the assembly part 3 is positioned on the pipe 2 to form an assembly. The product form of the pipe 2 can be but not limited to the front leg pipe of a child's car, the rear leg pipe of a child's car, etc.; the product form of the assembly part 3 can be but not limited to the wheel core nail, etc. For example, the wheel core nail as the assembly part 3 is inserted into the pipe section 2a of the front leg pipe of a child's car as the pipe 2 by an inner plug, and the pipe reducing machine 1 can reduce the pipe section 2a of the front leg pipe of a child's car to position the wheel core nail on the front leg pipe of a child's car to form an assembly.

[0049] As shown in Figures 1-4 , the pipe reducing machine 1 comprises a rack 10, an elastic member 20, a driving member 30 and a pushing assembly 40.

[0050] The rack 10 is the frame of the pipe reducing machine 1, and is used for carrying the pipe 2 and mounting the driving member 30 and other components; the specific structure of the rack 10 will be introduced below.

[0051] The rack 10 has a mounting through hole 12a; the mounting through hole 12a is a through hole on the rack 10 for the pipe section 2a of the pipe 2 to extend into.

[0052] The elastic member 20 serves as the tube shrinking member 2 of the tube shrinking machine 1. The elastic member 20 is adapted to elastically deform under load and to recover its elastic deformation upon removal of the external force. The specific structure of the elastic member 20 is not specified here; designers can design it based on practical needs. For example, the elastic member 20 may include, but is not limited to, an elastic ring, an elastic block, etc. The specific material used for the elastic member 20 is not specified here; designers can select the material based on practical needs. For example, the elastic member 20 may include, but is not limited to, elastic rubber, elastic silicone, elastic resin, etc.

[0053] The elastic member 20 is disposed in the mounting through hole 12 a , and the elastic member 20 is located between the hole wall surface of the mounting through hole 12 a and the outer side surface of the pipe section 2 a to be compressed of the pipe fitting 2 .

[0054] The drive member 30 serves as the power source for the tube shrinking machine 1 and is used to drive the push assembly 40 toward or away from the mounting hole 12a. The specific form of the drive member 30 is not limited here, and designers can reasonably design it according to actual needs. For example, the drive member 30 can include, but is not limited to, a pneumatic cylinder or a hydraulic cylinder 31.

[0055] The driver 30 is mounted on the frame 10. The specific connection method between the driver 30 and the frame 10 is not limited herein, and designers may reasonably design it based on actual needs. For example, the driver 30 may be, but is not limited to, detachably connected to the frame 10 via at least one of screwing, snapping, or plugging. For another example, the driver 30 may be, but is not limited to, non-detachably connected to the frame 10 via welding or riveting.

[0056] like Figures 3-6 As shown, the push assembly 40 serves as the extrusion structure of the tube shrinking machine 1, and is used to squeeze the elastic member 20 to cause the elastic member 20 to produce elastic deformation, so that the tube section 2a of the tube 2 to be compressed is deformed under the extrusion action of the elastic deformation produced by the elastic member 20, thereby achieving the purpose of shrinking. The specific structure of the push assembly 40 will be described in detail below.

[0057] The push assembly 40 is disposed at the driving end of the driving member 30. For example, when the driving member 30 includes a pneumatic cylinder, the telescopic rod of the cylinder serves as the driving end of the driving member 30, and the push assembly 40 is disposed on the telescopic rod of the cylinder. For another example, when the driving member 30 includes a hydraulic cylinder 31, the push column of the hydraulic cylinder 31 serves as the driving end of the driving member 30, and the push assembly 40 is disposed on the push column of the hydraulic cylinder 31.

[0058] The driving end of the driving member 30 is configured to push the pushing assembly 40 towards the elastic member 20 to extrude the elastic member 20 to produce elastic deformation in the direction perpendicular to the hole axis of the mounting through hole 12a to extrude the to-be-compressed pipe section 2a of the pipe 2. It should be noted that when the to-be-compressed pipe section 2a of the pipe 2 is inserted with the to-be-assembled part 3, the pushing assembly 40 is moved towards the elastic member 20 under the action of the driving end of the driving member 30 to extrude the elastic member 20 to produce elastic deformation in the direction perpendicular to the hole axis of the mounting through hole 12a to extrude the to-be-compressed pipe section 2a of the pipe 2, so as to position the to-be-assembled part 3 in the pipe 2 to form an assembled body.

[0059] Based on the pipe shrinking machine 1 in the embodiment of the present application, the driving member 30, the pushing assembly 40 and the elastic member 20 are designed to cooperate with each other, so that the pushing assembly 40 is moved towards the mounting through hole 12a under the action of the driving end of the driving member 30 to extrude the elastic member 20, and the elastic member 20 is suitable for producing elastic deformation in the direction perpendicular to the hole axis of the mounting through hole 12a under the extrusion action of the pushing assembly 40, and the to-be-compressed pipe section 2a of the pipe 2 is deformed under the extrusion action of the elastic deformation produced by the elastic member 20 to achieve the purpose of necking. Such operation is simple and can realize batch production, effectively reduce the processing error caused by manual operation, reduce the possibility of scratching the surface of the pipe 2, improve the yield of products, and effectively reduce the personnel investment and cost. It is worth mentioning that the pipe shrinking machine 1 in the embodiment of the present application uses the elastic deformation produced by the elastic member 20 to perform necking treatment on the to-be-compressed pipe section 2a of the pipe 2, and the elastic member 20 and the to-be-compressed pipe section 2a of the pipe 2 form a flexible contact (not a hard contact), so that the possibility of scratching the surface of the pipe 2 can be effectively reduced or even avoided.

[0060] As shown in Figures 3-6 The elastic member 20 includes a rubber ring. By designing the elastic member 20 as a rubber ring, the rubber ring is arranged around the circumference of the to-be-compressed pipe section 2a of the pipe 2, so that the elastic deformation produced by the elastic member 20 under the extrusion action of the pushing assembly 40 can extrude the circumference of the to-be-compressed pipe section 2a of the pipe 2 to realize the necking treatment on the circumference of the to-be-compressed pipe section 2a of the pipe 2. It is worth mentioning that when the to-be-compressed pipe section 2a of the pipe 2 is inserted with the to-be-assembled part 3, the elastic deformation produced by the elastic member 20 extrudes the circumference of the to-be-compressed pipe section 2a of the pipe 2, which can effectively enhance the connection tightness between the to-be-assembled part 3 and the pipe 2 in the assembled body, thereby further improving the yield of the assembled body.

[0061] As shown in Figures 3-6As shown, the pushing assembly 40 comprises a first pushing piece 41 and a second pushing piece 42; the first pushing piece 41 is arranged at the driving end of the driving piece 30; the second pushing piece 42 is arranged at one end of the first pushing piece 41 close to the mounting through hole 12a. The driving end of the driving piece 30 pushes the first pushing piece 41 to move towards the mounting through hole 12a to drive the second pushing piece 42 to extrude the elastic piece 20, so that the elastic piece 20 generates the first elastic deformation (one of the above-mentioned elastic deformations, i.e. the above-mentioned elastic deformations include the first elastic deformation).

[0062] The first pushing piece 41 serves as a transmission piece of the pushing assembly 40, for transmitting the driving force generated by the driving end of the driving piece 30 to the second pushing piece 42, so that the second pushing piece 42 extrudes the elastic piece 20 to make the elastic piece 20 generate the first elastic deformation. The specific structure of the first pushing piece 41 is not limited here, and designers can make reasonable design according to actual needs; for example, the first pushing piece 41 can but is not limited to include a pushing column or a pushing cylinder.

[0063] The second pushing piece 42 serves as one extruding piece of the pushing assembly 40, for extruding the elastic piece 20 to make the elastic piece 20 generate the first elastic deformation. The specific structure of the second pushing piece 42 is not limited here, and designers can make reasonable design according to actual needs; for example, the second pushing piece 42 can but is not limited to include another pushing column or another pushing cylinder.

[0064] By designing the first pushing piece 41 and the second pushing piece 42, the first pushing piece 41 moves towards the mounting through hole 12a under the action of the driving end of the driving piece 30 to drive the second pushing piece 42 to also move towards the mounting through hole 12a, the second pushing piece 42 extrudes the elastic piece 20, and the elastic piece 20 is suitable for generating the first elastic deformation perpendicular to the hole axis direction of the mounting through hole 12a under the extrusion action of the second pushing piece 42, while the to-be-compressed pipe segment 2a of the pipe piece 2 is deformed under the extrusion action of the first elastic deformation generated by the elastic piece 20, so as to achieve the purpose of necking; such operation is simple, batch production is realized, processing errors caused by manual work can be effectively reduced, the possibility of scratching the surface of the pipe piece 2 is reduced, the yield of products is improved, in addition, personnel investment can be effectively reduced, and the cost is reduced.

[0065] It can be understood that the size of the elastic deformation generated by the elastic piece 20 determines the deformation degree of the to-be-compressed pipe segment 2a of the pipe piece 2, thereby determining the size of the necking. For example, the greater the elastic deformation generated by the elastic piece 20, the greater the deformation degree of the to-be-compressed pipe segment 2a of the pipe piece 2, and the smaller the necking; for another example, the smaller the elastic deformation generated by the elastic piece 20, the smaller the deformation degree of the to-be-compressed pipe segment 2a of the pipe piece 2, and the greater the necking. In order to adjust the elastic deformation generated by the elastic piece 20 to adapt to the necking treatment of the to-be-compressed pipe segment 2a of the pipe piece 2 of different sizes, the design is as follows,Figures 3-12 As shown, the pushing assembly 40 further comprises an adjusting cylinder seat 43.

[0066] The adjusting cylinder seat 43 covers and is fixedly connected with the driving end of the driving member 30, and is configured to be adjustable in position along the direction of the hole axis of the mounting through hole 12a relative to the driving end of the driving member 30. The first pushing member 41 extends into the cavity of the adjusting cylinder seat 43 at the end away from the mounting through hole 12a, and is in sliding connection with the adjusting cylinder seat 43, and the end of the first pushing member 41 close to the mounting through hole 12a is in sliding connection with the second pushing member 42.

[0067] When the adjusting cylinder seat 43 is adjusted to be lower than the preset position along the direction of the hole axis of the mounting through hole 12a relative to the driving end of the driving member 30, the driving end of the driving member 30 moves along the direction of the hole axis of the mounting through hole 12a towards the mounting through hole 12a, to drive the first pushing member 41 to push the second pushing member 42 to extrude the elastic member 20, so that the elastic member 20 generates a first elastic deformation.

[0068] When the adjusting cylinder seat 43 is adjusted to be higher than the preset position along the direction of the hole axis of the mounting through hole 12a relative to the driving end of the driving member 30, the driving end of the driving member 30 moves along the direction of the hole axis of the mounting through hole 12a towards the mounting through hole 12a, to drive the adjusting cylinder seat 43 to push the second pushing member 42 to extrude the elastic member 20, so that the elastic member 20 generates a second elastic deformation (the other of the above-mentioned elastic deformations, i.e. the above-mentioned elastic deformations further include the second elastic deformation); and the second elastic deformation is greater than the first elastic deformation.

[0069] The adjusting cylinder seat 43 can be, but is not limited to, fixedly connected with the driving end of the driving member 30 by at least one of the following modes: screwing, clamping or inserting. The adjusting cylinder seat 43 is movable along the direction of the hole axis of the mounting through hole 12a relative to the driving end of the driving member 30, so that the position of the adjusting cylinder seat 43 is adjustable. During the movement of the adjusting cylinder seat 43 along the direction of the hole axis of the mounting through hole 12a relative to the driving end of the driving member 30, the adjusting cylinder seat 43 corresponds to a plurality of positions, one of which is the preset position, as shown, and the "preset position" is the position of the adjusting cylinder seat 43 when the driving end of the driving member 30 has not moved along the direction of the hole axis of the mounting through hole 12a towards the mounting through hole 12a (i.e. before the pushing column of the oil cylinder 31 to be introduced below is elongated), the first pushing member 41 is supported on the driving end of the driving member 30 under its own gravity, the second pushing member 42 is supported on the first pushing member 41 under its own gravity, and the adjusting cylinder seat 43 is adjusted to the position corresponding to the moment when the upper end face of the adjusting cylinder seat 43 just contacts the lower end face of the second pushing member 42 (at this moment, the gravity of the second pushing member 42 does not act on the adjusting cylinder seat 43). Figure 8 ​

[0070] It should be noted that when the adjustment cylinder seat 43 is adjusted to below the above-mentioned preset position, the driving end of the driving member 30 drives the first push member 41 to push the second push member 42 to squeeze the elastic member 20, causing the elastic member 20 to produce a first elastic deformation. At this time, the upper end face of the adjustment cylinder seat 43 is spaced from the lower end face of the second push member 42, and the gravity of the second push member 42 completely acts on the first push member 41; when the adjustment cylinder seat 43 is adjusted to above the above-mentioned preset position, the driving end of the driving member 30 drives the adjustment cylinder seat 43 to push the second push member 42 to squeeze the elastic member 20, causing the elastic member 20 to produce a second elastic deformation. At this time, the upper end face of the adjustment cylinder seat 43 is in contact with the lower end face of the second push member 42, and the gravity of the second push member 42 completely acts on the adjustment cylinder seat 43.

[0071] In addition, it should be noted that when the adjustment cylinder seat 43 is adjusted to be lower than the above-mentioned preset position, the distance △X (such as Figure 8 4. As shown in FIG5 , whether the adjustment cylinder seat 43 is increased or decreased, the first elastic deformation of the elastic member 20 generated by the squeezing action of the second push member 42 will not change. When the adjustment cylinder seat 43 is adjusted to a position higher than the above-mentioned preset position, if the spacing △X between the upper end surface of the adjustment cylinder seat 43 and the upper end surface of the driving end of the driving member 30 in the direction of the hole axis of the installation through hole 12a increases, the second elastic deformation of the elastic member 20 generated by the squeezing action of the second push member 42 will increase. Conversely, if the spacing △X between the upper end surface of the adjustment cylinder seat 43 and the upper end surface of the driving end of the driving member 30 in the direction of the hole axis of the installation through hole 12a decreases, the second elastic deformation of the elastic member 20 generated by the squeezing action of the second push member 42 will decrease.

[0072] By designing the adjusting cylinder seat 43, by changing the position of the adjusting cylinder seat 43 relative to the driving end of the driving member 30 along the direction of the hole axis of the mounting through hole 12a, and adjusting the adjusting cylinder seat 43 to be lower than the above-mentioned preset position, the driving end of the driving member 30 drives the first pushing piece 41 to push the second pushing piece 42 to extrude the elastic member 20 and make the elastic member 20 generate a smaller first elastic deformation, and the to-be-compressed pipe section 2a of the pipe member 2 is deformed smaller under the extrusion of the smaller first elastic deformation of the elastic member 20, so as to achieve the purpose of necking. By designing the adjusting cylinder seat 43, by changing the position of the adjusting cylinder seat 43 relative to the driving end of the driving member 30 along the direction of the hole axis of the mounting through hole 12a, and adjusting the adjusting cylinder seat 43 to be higher than the above-mentioned preset position, the driving end of the driving member 30 drives the adjusting cylinder seat 43 to push the second pushing piece 42 to extrude the elastic member 20 and make the elastic member 20 generate a larger second elastic deformation, and the to-be-compressed pipe section 2a of the pipe member 2 is deformed larger under the extrusion of the larger second elastic deformation of the elastic member 20, so as to achieve the purpose of necking.

[0073] As shown in Figures 3-12 The driving member 30 includes an oil cylinder 31 mounted on the rack 10, the pushing column of the oil cylinder 31 serves as the driving end of the driving member 30, and the pushing column of the oil cylinder 31 moves in extension along the direction of the hole axis of the mounting through hole 12a, and the adjusting cylinder seat 43 is threadedly connected with the pushing column of the oil cylinder 31. By designing the driving member 30 as the oil cylinder 31, and threadedly connecting the adjusting cylinder seat 43 with the pushing column of the oil cylinder 31, the position of the adjusting cylinder seat 43 relative to the pushing column of the oil cylinder 31 along the direction of the hole axis of the mounting through hole 12a can be adjusted by rotating the adjusting cylinder seat 43, which is simple in structure and convenient to operate. By designing the driving member 30 as the oil cylinder 31, when the adjusting cylinder seat 43 is adjusted to be lower than the above-mentioned preset position, the pushing column of the oil cylinder 31 moves in extension along the direction of the hole axis of the mounting through hole 12a to drive the first pushing piece 41 to push the second pushing piece 42 to extrude the elastic member 20 and make the elastic member 20 generate a smaller first elastic deformation, and the to-be-compressed pipe section 2a of the pipe member 2 is deformed smaller under the extrusion of the smaller first elastic deformation of the elastic member 20, so as to achieve the purpose of necking. By designing the driving member 30 as the oil cylinder 31, when the adjusting cylinder seat 43 is adjusted to be higher than the above-mentioned preset position, the pushing column of the oil cylinder 31 moves in extension along the direction of the hole axis of the mounting through hole 12a to drive the adjusting cylinder seat 43 to push the second pushing piece 42 to extrude the elastic member 20 and make the elastic member 20 generate a larger second elastic deformation, and the to-be-compressed pipe section 2a of the pipe member 2 is deformed larger under the extrusion of the larger second elastic deformation of the elastic member 20, so as to achieve the purpose of necking.

[0074] As shown in Figures 3-12As shown, the outer side wall surface of the adjusting cylinder seat 43 is provided with a clamping position 43a for interfacing with an external component to allow the adjusting cylinder seat 43 to be adjusted in position along the direction of the hole axis of the mounting through hole 12a under the action of the external component relative to the push rod of the oil cylinder 31.

[0075] The clamping position 43a is a structure of the adjusting cylinder seat 43 for interfacing with an external component; the external component can be but is not limited to a wrench or other tool. For example, the clamping position 43a can be but is not limited to a virtual structure such as a bayonet formed on the outer side wall surface of the adjusting cylinder seat 43, at this time the wrench interfaces with the bayonet, and the adjusting cylinder seat 43 can be rotated under the action of the wrench relative to the push rod of the oil cylinder 31 to change the position of the adjusting cylinder seat 43 along the direction of the hole axis of the mounting through hole 12a relative to the push rod of the oil cylinder 31. For another example, the clamping position 43a can also be but is not limited to a solid structure such as a clamping block provided on the outer side wall surface of the adjusting cylinder seat 43, at this time the wrench interfaces with the clamping block, and the adjusting cylinder seat 43 can be rotated under the action of the wrench relative to the push rod of the oil cylinder 31 to change the position of the adjusting cylinder seat 43 along the direction of the hole axis of the mounting through hole 12a relative to the push rod of the oil cylinder 31.

[0076] By designing the clamping position 43a on the outer side wall surface of the adjusting cylinder seat 43 for interfacing with an external component, the operator can rotate the adjusting cylinder seat 43 by means of the external component to change the position of the adjusting cylinder seat 43 along the direction of the hole axis of the mounting through hole 12a relative to the push rod of the oil cylinder 31, so as to facilitate the rotation of the adjusting cylinder seat 43 and make the overall operation more convenient.

[0077] For example, Figures 3-12As shown, the end face of the second pushing piece 42 away from the side of the mounting hole 12a is provided with a groove 42a, and the end of the first pushing piece 41 close to the mounting hole 12a extends into the groove 42a; when the adjusting barrel 43 is adjusted to be lower than the preset position along the direction of the hole axis of the mounting hole 12a relative to the driving end of the driving piece 30, the end face of the first pushing piece 41 facing the side of the mounting hole 12a abuts against the groove bottom face of the groove 42a; when the adjusting barrel 43 is adjusted to be higher than the preset position along the direction of the hole axis of the mounting hole 12a relative to the driving end of the driving piece 30, the end face of the adjusting barrel 43 facing the side of the mounting hole 12a abuts against the end face of the second pushing piece 42 away from the side of the mounting hole 12a. In this design, by designing the groove 42a on the end face of the second pushing piece 42 away from the side of the mounting hole 12a, when the adjusting barrel 43 is adjusted to be lower than the preset position along the direction of the hole axis of the mounting hole 12a relative to the driving end of the driving piece 30, the end face of the first pushing piece 41 facing the side of the mounting hole 12a abuts against the groove bottom face of the groove 42a, so that the first pushing piece 41 can effectively transmit force to the second pushing piece 42. By designing the groove 42a on the end face of the second pushing piece 42 away from the side of the mounting hole 12a, when the adjusting barrel 43 is adjusted to be higher than the preset position along the direction of the hole axis of the mounting hole 12a relative to the driving end of the driving piece 30, the end face of the adjusting barrel 43 facing the side of the mounting hole 12a abuts against the end face of the second pushing piece 42 away from the side of the mounting hole 12a, so that the adjusting barrel 43 can effectively transmit force to the second pushing piece 42.

[0078] As Figures 3-12As shown, one end of the second push member 42 close to the mounting through hole 12a extends into the mounting through hole 12a, and the outer side surface of the second push member 42 fits against the hole wall surface of the mounting through hole 12a; and / or, the end surface of the second push member 42 facing away from the mounting through hole 12a is provided with a groove 42a, and one end of the first push member 41 close to the mounting through hole 12a extends into the groove 42a, and the outer side surface of the first push member 41 fits against the groove side surface of the groove 42a; and / or, the outer side surface of the first push member 41 fits against the inner side surface of the adjustment cylinder seat 43. In this design, by designing the outer side surface of the second push member 42 to fit with the hole wall surface of the mounting through hole 12a, the second push member 42 can be limited to be offset radially relative to the frame 10 along the hole axis of the mounting through hole 12a, so as to ensure the stability of the second push member 42 moving in the direction of the hole axis of the mounting through hole 12a; and / or, by designing the outer side surface of the first push member 41 to fit with the groove side surface of the groove 42a, the second push member 42 can be limited to be offset radially relative to the first push member 41 (or the first push member 41 relative to the second push member 41). The push piece 42) is offset radially along the axis of the mounting hole 12a to ensure the stability of the movement of the first push piece 41 and the second push piece 42 along the direction of the axis of the mounting hole 12a; and / or, by designing the outer side surface of the first push piece 41 to fit with the inner side surface of the adjustment cylinder seat 43, the first push piece 41 can be limited to be offset radially relative to the adjustment cylinder seat 43 along the axis of the mounting hole 12a to ensure the stability of the movement of the first push piece 41 along the direction of the axis of the mounting hole 12a.

[0079] like Figures 13-14 As shown, the tube shrinking machine 1 also includes a first sensor 50 and a controller (not shown in the figure); the first sensor 50 is installed on the frame 10, and the first sensor 50 is configured to detect whether the driving end of the driving member 30 moves into place and generate a corresponding electrical signal; the controller is installed on the frame 10, and the controller is electrically connected to the first sensor 50 and the driving member 30, and the controller is configured to perform corresponding operations according to the electrical signal.

[0080] The first sensor 50 is used to detect whether the driving end of the driving member 30 is moved to the position. For example, the first sensor 50 can be, but is not limited to, a distance sensor. In this case, whether the driving end of the driving member 30 is moved to the position can be determined by sensing the distance between the driving end of the driving member 30 and the first sensor 50. If the first sensor 50 senses that the distance between the driving end of the driving member 30 and the first sensor 50 is zero or close, it indicates that the driving end of the driving member 30 has been moved to the position. Otherwise, if the first sensor 50 senses that the distance between the driving end of the driving member 30 and the first sensor 50 is far, it indicates that the driving end of the driving member 30 is not moved to the position. For another example, the first sensor 50 can be, but is not limited to, a Hall sensor. In this case, whether the driving end of the driving member 30 is moved to the position can be determined by sensing the magnetic field strength between the driving end of the driving member 30 (provided with a magnet) and the first sensor 50. If the first sensor 50 senses that the magnetic field strength between the driving end of the driving member 30 and the first sensor 50 is large, it indicates that the driving end of the driving member 30 has been moved to the position. Otherwise, if the first sensor 50 senses that the magnetic field strength between the driving end of the driving member 30 and the first sensor 50 is small, it indicates that the driving end of the driving member 30 is not moved to the position.

[0081] The specific connection mode between the first sensor 50 and the rack 10 is not limited here, and the designer can reasonably design according to the actual needs. For example, the first sensor 50 can be, but is not limited to, detachably connected with the rack 10 by at least one of screwing, clamping or inserting. For another example, the first sensor 50 can be, but is not limited to, non-detachably connected with the rack 10 by gluing.

[0082] The controller is the control center of the pipe shrinking machine 1, and the controller can be, but is not limited to, an MCU (Microcontroller Unit). The specific connection mode between the controller and the rack 10 is not limited here, and the designer can reasonably design according to the actual needs. For example, the controller can be, but is not limited to, detachably connected with the rack 10 by at least one of screwing, clamping or inserting. For another example, the controller can be, but is not limited to, non-detachably connected with the rack 10 by gluing or welding.

[0083] When the first sensor 50 detects that the driving end of the driving member 30 moves to the position, a first electric signal (one of the above-mentioned electric signals, for example, electric signal "1") is generated, and at this time, the controller controls the driving end of the driving member 30 to move away from the mounting hole 12a (i.e., the pushing rod of the oil hydraulic cylinder 31 is retracted) according to the first electric signal. When the first sensor 50 detects that the driving end of the driving member 30 does not move to the position, a second electric signal (the other of the above-mentioned electric signals, for example, electric signal "0") is generated, and at this time, the controller controls the driving end of the driving member 30 to continue to move towards the mounting hole 12a (i.e., the pushing rod of the oil hydraulic cylinder 31 is extended) until it moves to the position according to the second electric signal.

[0084] By designing the controller and the first sensor 50, the controller is electrically connected with the first sensor 50 and the driving member 30, and the controller can perform corresponding operations according to the electric signal generated by the first sensor 50, so as to realize the automatic control of the pipe reducing machine 1.

[0085] As shown in Figures 3-12 The rack 10 includes a bearing table 11 and a bearing member 12. The bearing table 11 has a fixing hole 11a, and the driving member 30 is installed on the bearing table 11. The bearing member 12 is connected with the bearing table 11 corresponding to the fixing hole 11a, and the bearing member 12 has a mounting hole 12a. The bearing member 12 is configured to be adjustable in position along the direction of the hole axis of the mounting hole 12a relative to the bearing table 11.

[0086] The bearing member 12 can be fixedly connected with the bearing table 11 by at least one of the following modes, such as screwing, clamping or inserting.

[0087] The bearing table 11 is used to bear the driving member 30 and other components. The bearing member 12 is adjustable in position along the direction of the hole axis of the mounting hole 12a relative to the bearing table 11. In the case that the movement stroke of the driving end of the driving member 30 along the direction of the hole axis of the mounting hole 12a towards the mounting hole 12a is unchanged, the size of the elastic deformation of the elastic member 20 is changed by adjusting the position of the bearing member 12 along the direction of the hole axis of the mounting hole 12a relative to the bearing table 11, so as to adapt to the pipe section 2a of the pipe 2 of different sizes for necking processing, and the applicability of the pipe reducing machine 1 is improved.

[0088] As shown in Figures 3-12As shown, the hole wall surface of the fixing hole 11a is provided with an internal thread, and the outer side surface of the bearing piece 12 is provided with an external thread, and the bearing piece 12 is connected with the bearing table 11 through the cooperation of the external thread and the internal thread. In other words, the bearing piece 12 is threadedly connected with the bearing table 11. In this design, the position of the bearing piece 12 relative to the bearing table 11 along the direction of the hole axis of the mounting through hole 12a can be adjusted by rotating the bearing piece 12, and the structure is simple and convenient to operate.

[0089] It is worth mentioning that, on the basis of adjusting the position of the adjusting cylinder seat 43 relative to the driving end of the driving piece 30 along the direction of the hole axis of the mounting through hole 12a, the position of the bearing piece 12 relative to the bearing table 11 along the direction of the hole axis of the mounting through hole 12a is designed to be adjustable; when the adjusting cylinder seat 43 is adjusted to be lower than the above-mentioned preset position, the size of the elastic deformation of the elastic piece 20 can be changed by separately adjusting the position of the bearing piece 12 relative to the bearing table 11 along the direction of the hole axis of the mounting through hole 12a, so as to adapt to the necking processing of the to-be-compressed pipe section 2a of the pipe 2 of different sizes, and the applicability of the pipe shrinking machine 1 is improved; when the adjusting cylinder seat 43 is adjusted to be higher than the above-mentioned preset position, the size of the elastic deformation of the elastic piece 20 can be changed by adjusting the position of the bearing piece 12 relative to the bearing table 11 along the direction of the hole axis of the mounting through hole 12a and / or adjusting the position of the adjusting cylinder seat 43 relative to the driving end of the driving piece 30 along the direction of the hole axis of the mounting through hole 12a, so as to adapt to the necking processing of the to-be-compressed pipe section 2a of the pipe 2 of different sizes, and the applicability of the pipe shrinking machine 1 is improved.

[0090] As shown in the figure, Figure 13 The pipe shrinking machine 1 further comprises a second inductor 60, and the second inductor 60 is installed on the bearing table 11. The second inductor 60 is configured to detect whether the to-be-compressed pipe section 2a of the pipe 2 extends into the mounting through hole 12a.

[0091] The second sensor 60 is another detection element of the pipe shrinking machine 1, which is used to detect whether the to-be-compressed pipe section 2a of the pipe 2 extends into the mounting through hole 12a. For example, the second sensor 60 can be but is not limited to a pressure sensor, and in this case, whether the to-be-compressed pipe section 2a of the pipe 2 extends into the mounting through hole 12a can be determined by detecting the pressure. If the pressure detected by the second sensor 60 is zero, it indicates that the to-be-compressed pipe section 2a of the pipe 2 does not extend into the mounting through hole 12a, and vice versa, if the pressure detected by the second sensor 60 is large, it indicates that the to-be-compressed pipe section 2a of the pipe 2 has extended into the mounting through hole 12a. For another example, the second sensor 60 can be but is not limited to a distance sensor, and in this case, whether the to-be-compressed pipe section 2a of the pipe 2 extends into the mounting through hole 12a can be determined by sensing the distance between the pipe 2 and the second sensor 60. If the second sensor 60 senses that the distance between the pipe 2 and the second sensor 60 is zero or close (caused by the machining error of the pipe 2), it indicates that the to-be-compressed pipe section 2a of the pipe 2 has extended into the mounting through hole 12a, and vice versa, if the second sensor 60 senses that the distance between the pipe 2 and the second sensor 60 is far, it indicates that the to-be-compressed pipe section 2a of the pipe 2 does not extend into the mounting through hole 12a.

[0092] The specific connection mode between the second sensor 60 and the bearing table 11 is not limited here, and the designer can reasonably design according to the actual needs. For example, the second sensor 60 can be but is not limited to being detachably connected with the bearing table 11 by at least one of screwing, clamping or inserting. For another example, the second sensor 60 can be but is not limited to being non-detachably connected with the bearing table 11 by gluing. Of course, in other embodiments, the second sensor 60 can also be installed on the bearing 12 instead of the bearing table 11.

[0093] The second sensor 60 can be electrically connected with the controller. When the second sensor 60 detects that the to-be-compressed pipe section 2a of the pipe 2 extends into the mounting through hole 12a, a third electric signal (one of another electric signal different from the above-mentioned electric signal, for example, electric signal “1”) is generated, and in this case, the controller controls the driving end of the driving member 30 to move towards the mounting through hole 12a (i.e., the push column of the above-mentioned oil cylinder 31 performs a contraction movement) according to the third electric signal, so as to make the second pushing member 42 press the elastic member 20, and make the elastic member 20 generate elastic deformation to press the to-be-compressed pipe section 2a of the pipe 2. When the second sensor 60 detects that the to-be-compressed pipe section 2a of the pipe 2 does not extend into the mounting through hole 12a, a fourth electric signal (another electric signal different from the above-mentioned electric signal, for example, electric signal “0”) is generated, and in this case, the controller controls the driving end of the driving member 30 to remain stationary according to the fourth electric signal.

[0094] By designing the second sensor 60, the second sensor 60 is used to detect whether the to-be-compressed pipe section 2a of the pipe 2 extends into the mounting through hole 12a, so as to realize the automatic control of the pipe shrinking machine 1.

[0095] The working principle of the pipe shrinking machine 1 is introduced below by taking the pipe 2 as the front leg pipe of a child's car and the to-be-assembled part 3 as a wheel core nail, and the specific steps are as follows:

[0096] Step 1: insert the wheel core nail into the to-be-compressed pipe section 2a of the front leg pipe of the child's car through the inner plug, extend the wheel core nail, the inner plug and the to-be-compressed pipe section 2a of the front leg pipe of the child's car into the mounting through hole 12a, and trigger the start button;

[0097] Step 2: the second sensor 60 detects that the to-be-compressed pipe section 2a of the front leg pipe of the child's car has extended into the mounting through hole 12a and generates a third electric signal;

[0098] Step 3: the controller controls the push rod of the oil cylinder 31 to make an elongation movement along the direction of the hole axis of the mounting through hole 12a according to the third electric signal; if the adjusting cylinder seat 43 is lower than the preset position, the push rod of the oil cylinder 31 drives the first push piece 41 to push the second push piece 42 to extrude the elastic member 20, so that the elastic member 20 generates a first elastic deformation, and the to-be-compressed pipe section 2a of the front leg pipe of the child's car is deformed under the extrusion of the first elastic deformation of the elastic member 20, so as to position the wheel core nail on the front leg pipe of the child's car to form an assembled body; if the adjusting cylinder seat 43 is higher than the preset position, the push rod of the oil cylinder 31 drives the adjusting cylinder seat 43 to push the second push piece 42 to extrude the elastic member 20, so that the elastic member 20 generates a second elastic deformation, and the to-be-compressed pipe section 2a of the front leg pipe of the child's car is deformed under the extrusion of the second elastic deformation of the elastic member 20, so as to position the wheel core nail on the front leg pipe of the child's car to form an assembled body;

[0099] Step 4: the first sensor 50 detects that the push rod of the oil cylinder 31 has moved to the position and generates a first electric signal, and the controller controls the push rod of the oil cylinder 31 to make a contraction movement to the reset position along the direction of the hole axis of the mounting through hole 12a according to the first electric signal;

[0100] Step 5: take down the assembled body.

[0101] Such a cycle operation realizes batch assembly.

[0102] It should be noted that when it is necessary to change the size of the elastic deformation of the elastic member 20 to adapt to the necking processing of the to-be-compressed pipe section 2a of the front leg pipe of the child's car of different sizes, the position of the bearing member 12 and / or the adjusting cylinder seat 43 in the direction of the hole axis of the mounting through hole 12a can be adjusted in advance.

[0103] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it is understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationships in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present patent, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0104] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A tube reducer, characterized in that, The application relates to a pipe necking machine for necking a pipe section to be compressed of a pipe, the pipe necking machine comprising: a frame having a mounting hole into which the pipe section to be compressed of the pipe is inserted; a resilient member arranged in the mounting hole and located between a hole wall surface of the mounting hole and an outer surface of the pipe section to be compressed of the pipe; a driving member mounted on the frame; a pushing assembly arranged at a driving end of the driving member; wherein the driving end of the driving member is configured to push the pushing assembly towards the mounting hole to extrude the resilient member, so that the resilient member is elastically deformed in a direction perpendicular to an axis of the mounting hole to extrude the pipe section to be compressed of the pipe.

2. The tube reducer of claim 1, wherein, The pushing assembly comprises: a first pushing member arranged at the driving end of the driving member; a second pushing member arranged at one end of the first pushing member close to the mounting hole; wherein the driving end of the driving member pushes the first pushing member towards the mounting hole to drive the second pushing member to extrude the resilient member, so that the resilient member is elastically deformed in a first elastic deformation; and the elastic deformation comprises the first elastic deformation.

3. The pipe necking machine according to claim 2, wherein: the pushing assembly further comprises an adjusting cylinder seat covering the driving end of the driving member and fixedly connected with the driving end of the driving member, and the adjusting cylinder seat is configured to be adjustable in position along a direction of the axis of the mounting hole relative to the driving end of the driving member; one end of the first pushing member away from the mounting hole is inserted into a cavity of the adjusting cylinder seat, the first pushing member is in sliding connection with the adjusting cylinder seat, and one end of the first pushing member close to the mounting hole is in sliding connection with the second pushing member; when the adjusting cylinder seat is adjusted to be lower than a preset position along the direction of the axis of the mounting hole relative to the driving end of the driving member, the driving end of the driving member moves towards the mounting hole along the direction of the axis of the mounting hole to drive the first pushing member to push the second pushing member to extrude the resilient member, so that the resilient member is elastically deformed in the first elastic deformation; when the adjusting cylinder seat is adjusted to be higher than the preset position along the direction of the axis of the mounting hole relative to the driving end of the driving member, the driving end of the driving member moves towards the mounting hole along the direction of the axis of the mounting hole to drive the adjusting cylinder seat to push the second pushing member to extrude the resilient member, so that the resilient member is elastically deformed in a second elastic deformation; wherein the elastic deformation comprises the second elastic deformation, and the second elastic deformation is greater than the first elastic deformation.

4. The pipe necking machine according to claim 3, wherein: the driving member comprises an oil cylinder mounted on the frame, a pushing column of the oil cylinder serving as the driving end of the driving member, and the pushing column of the oil cylinder is in telescopic movement along the direction of the axis of the mounting hole; the adjusting cylinder seat is in threaded connection with the pushing column of the oil cylinder.

5. The pipe necking machine according to claim 4, wherein: An outer side wall surface of the adjusting cylinder seat is provided with a clamping position, which is used to be connected with an external component, so that the adjusting cylinder seat is adjustable in position along the direction of the hole axis of the mounting through hole relative to the pushing column of the oil cylinder under the action of the external component.

6. The pipe shrinking machine of claim 3, wherein, An end surface of the second pushing piece on the side away from the mounting through hole is provided with a groove, and an end of the first pushing piece close to the mounting through hole extends into the groove; When the adjusting cylinder seat is adjusted to be lower than a preset position along the direction of the hole axis of the mounting through hole relative to the driving end of the driving piece, an end surface of the first pushing piece on the side facing the mounting through hole abuts against the groove bottom surface of the groove; When the adjusting cylinder seat is adjusted to be higher than the preset position along the direction of the hole axis of the mounting through hole relative to the driving end of the driving piece, an end surface of the adjusting cylinder seat on the side facing the mounting through hole abuts against an end surface of the second pushing piece on the side away from the mounting through hole.

7. The pipe shrinking machine of claim 3, wherein, An end of the second pushing piece close to the mounting through hole extends into the mounting through hole, and an outer side surface of the second pushing piece is attached to the hole wall surface of the mounting through hole; and / or An end surface of the second pushing piece on the side away from the mounting through hole is provided with a groove, an end of the first pushing piece close to the mounting through hole extends into the groove, and an outer side surface of the first pushing piece is attached to the groove side surface; and / or An outer side surface of the first pushing piece is attached to an inner side surface of the adjusting cylinder seat.

8. The tube reducer of any one of claims 1-7, wherein, The rack comprises: A bearing table having a fixing hole, wherein the driving piece is installed on the bearing table; A bearing piece connected to the bearing table corresponding to the fixing hole, wherein the bearing piece has the mounting through hole, and the bearing piece is configured to be adjustable in position along the direction of the hole axis of the mounting through hole relative to the bearing table.

9. The pipe shrinking machine of claim 8, wherein, An inner thread is arranged on a hole wall surface of the fixing hole, and an outer thread is arranged on an outer side surface of the bearing piece, and the bearing piece is connected to the bearing table through cooperation of the outer thread and the inner thread.

10. The pipe shrinking machine of claim 8, wherein, The pipe shrinking machine further comprises a second sensor, wherein the second sensor is installed on the bearing table, and the second sensor is configured to detect whether the pipe segment to be compressed of the pipe piece extends into the mounting through hole.

Images