A clamp module assembly for a TEF tube expander

Abstract

The utility model discloses a kind of clamp mould assemblies for TEF pipe expander, including rack, pipe upper clamp mould, pipe lower clamp mould and forming die, the upper wedge block is provided on the pipe upper clamp mould, the lower wedge block that is matched with upper wedge block is provided on the pipe lower clamp mould, the clamping port is provided on the pipe upper clamp mould and pipe lower clamp mould, the chute is opened in the pipe lower clamp mould, a pair of spacing block is provided between the pipe lower clamp mould, the pipe upper clamp mould and pipe lower clamp mould are all installed with clamping pipe, clamping recess is opened in the clamping pipe, the clamping recess is through the pipe upper clamp mould and pipe lower clamp mould. Compared with prior art, the beneficial effects of the utility model are that the upper and lower clamp moulds of clamp mould for TEF pipe expander are provided with interfitting inclined wedge structure, through the cooperation of inclined wedge structure, the upper and lower clamp moulds realize the quick clamping of pipe fittings, improve the stability of clamping, shorten clamping time, thereby improve the production efficiency of TEF pipe expander.

Description

Technical Field

[0001] This utility model belongs to the field of clamping molds, specifically relating to a clamping mold assembly for a TEF tube expander. Background Technology

[0002] A TEF tube expander is a mechanical processing device that increases the diameter of a tube by applying mechanical pressure to one end, thereby enabling the connection, fixation, or alteration of pipe dimensions. A TEF tube expander requires clamping devices to hold and fix the tube in place, allowing the expander to expand the fitting.

[0003] Traditional tube expander clamping components include three-jaw chucks, four-jaw chucks, and clamping molds. Traditional three-jaw chucks are prone to slippage when clamping tubes and pose a risk of being thrown out during high-speed rotation. Traditional four-jaw chucks require individual adjustment of the jaws, which is frequent and time-consuming. Common clamping mold structures are bulky, slow to accelerate, and have low efficiency in production operations. Utility Model Content

[0004] The purpose of this invention is to provide a clamping mold assembly for a TEF tube expander to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model provides a clamping mold assembly for a TEF tube expander, including a frame, an upper tube clamping mold, a lower tube clamping mold, and a forming mold. The upper tube clamping mold is provided with an upper wedge block, and the lower tube clamping mold is provided with a lower wedge block that cooperates with the upper wedge block. Both the upper tube clamping mold and the lower tube clamping mold are provided with clamping openings. The lower tube clamping mold is provided with a sliding groove, and a spacer block is provided between a pair of lower tube clamping molds.

[0006] In one or more embodiments of this utility model, clamping tubes are installed on both the upper and lower clamping molds, and clamping grooves are formed on the clamping tubes, which penetrate the upper and lower clamping molds.

[0007] In one or more embodiments of this utility model, a clamping groove is provided on the spacer block, and the clamping groove on the spacer block is connected to the clamping grooves provided on the upper and lower pipe clamping molds.

[0008] In one or more embodiments of this utility model, a pad is installed on both the upper and lower clamping molds of the pipe, and the upper end face of the pad is on the same plane as the upper end face of the clamping pipe.

[0009] In one or more embodiments of this utility model, the wedge angle between the upper wedge block and the lower wedge block is 15° to 25°.

[0010] In one or more embodiments of this utility model, a spacer cylinder connected to the spacer block is installed at the bottom of the spacer block.

[0011] In one or more embodiments of this utility model, a connecting slider is fixedly connected to the molding die, and a molding die telescopic guide rail that cooperates with the molding die is installed on the frame.

[0012] In one or more embodiments of this utility model, a forming cylinder is installed on the frame, and one end of the forming cylinder is fixedly connected to the forming mold.

[0013] In one or more embodiments of this utility model, a first fixing groove is provided on the tube clamping mold, and upper and lower guide rails for the clamping mold that cooperate with the first fixing groove are installed on the frame.

[0014] In one or more embodiments of this utility model, a clamping cylinder is installed on the frame, and one end of the clamping cylinder is fixedly connected to the clamping mold on the tube.

[0015] Compared with the prior art, the beneficial effect of this utility model is that it sets mutually cooperating wedge structures in the upper and lower clamping molds of the TEF tube expander. Through the cooperation of the wedge structures, the upper and lower clamping molds can quickly clamp the tube, improve the stability of clamping, shorten the clamping time, and thus improve the production efficiency of the TEF tube expander. Attached Figure Description

[0016] Figure 1 This is a first structural diagram of a clamping mold assembly for a TEF tube expander according to an embodiment of the present invention;

[0017] Figure 2 This is a second structural diagram of a clamping mold assembly for a TEF tube expander according to one embodiment of the present invention;

[0018] Figure 3 This is a third structural diagram of a clamping mold assembly for a TEF tube expander according to one embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the first internal structure of a TEF tube expander according to one embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the second internal structure of a TEF tube expander according to one embodiment of the present invention.

[0021] Explanation of key figure labels:

[0022] 1-Upper pipe clamping mold, 101-Upper wedge block, 102-First fixing groove, 103-Clamping opening, 104-Fixing hole, 2-Lower pipe clamping mold, 201-Lower wedge block, 202-Clamping pipe, 2021-Clamping groove, 203-Second fixing groove, 204-Slide groove, 205-Padded block, 3-Forming mold, 301-Expanding bead, 302-Expanding device, 303-Connecting slider, 4-Clamping cylinder, 5-Forming cylinder, 6-Spacer block, 7-Spacer block cylinder, 8-Forming mold telescopic guide rail, 9-Clamping mold upper and lower guide rails, 10-Frame. Detailed Implementation

[0023] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0024] refer to Figures 4-5 As shown, a clamping mold assembly for a TEF tube expander is used to clamp, fix, expand, and shape tubes. The upper clamping mold 1 is driven downwards by the movement of the clamping cylinder 4, and the lower clamping mold 2 is forced to move horizontally with the help of the wedge structure. During this process, the lower clamping mold 2, in its lateral movement, cooperates with the upper clamping mold 1 to clamp the tube. Subsequently, the forming mold 3, pushed by the forming cylinder 5, expands the clamped tube. During this process, the wedge remains pressed. After the expansion is completed, the clamping cylinder 4 drives and retracts the upper clamping mold 1, and the lower clamping mold 2 is reset by the elastic component. Finally, the spacer block cylinder 7 pushes the spacer block 6 upwards to achieve demolding of the tube.

[0025] refer to Figures 4-5 As shown, the clamping mold assembly for the TEF tube expander includes a frame 10, an upper tube clamping mold 1, a lower tube clamping mold 2, and a forming mold 3. The frame 10 serves to fix and install the upper tube clamping mold 1, the lower tube clamping mold 2, and the forming mold 3. The upper tube clamping mold 1 is a movable clamping mold capable of longitudinal displacement. The lower tube clamping mold 2 is a clamping mold capable of a small range of lateral displacement via an elastic component, but it cannot perform longitudinal displacement. The forming mold 3 is a working mold capable of lateral displacement. The upper tube clamping mold 1 and the lower tube clamping mold 2 cooperate to clamp and release the tube fitting. The forming mold 3 is used to expand the fixed tube fitting.

[0026] refer to Figures 1-3As shown, the upper pipe clamping mold 1 is provided with an upper wedge block 101, and the lower pipe clamping mold 2 is provided with a lower wedge block 201 that cooperates with the upper wedge block 101. The cooperation of the upper wedge block 101 and the lower wedge block 201 achieves multi-directional coordinated clamping, completing the tight operation of clamping, forming, and releasing. The cooperation of the upper wedge block 101 and the lower wedge block 201 not only achieves precise clamping but also disperses the stress distribution on the contact surface, preventing the pipe fitting from cracking and wrinkling. Both the upper pipe clamping mold 1 and the lower pipe clamping mold 2 are provided with clamping openings 103, which are used to clamp the pipe fitting. The clamping openings 103 on the upper pipe clamping mold 1 and the lower pipe clamping mold 2 cooperate vertically to achieve precise fixation of the pipe fitting. The lower pipe clamping mold 2 is provided with a sliding groove 204, which cooperates with the elastic component installed on the lower pipe clamping mold 2 to achieve lateral displacement of the lower pipe clamping mold 2 after the pipe fitting is released, thus achieving reset. Both the upper pipe clamping mold 1 and the lower pipe clamping mold 2 are equipped with clamping tubes 202, and clamping grooves 2021 are formed on the clamping tubes 202, which penetrate through the upper pipe clamping mold 1 and the lower pipe clamping mold 2. A clamping groove 2021 is formed on the spacer block 6, and the clamping groove 2021 on the spacer block 6 is connected to the clamping grooves 2021 formed on the upper pipe clamping mold 1 and the lower pipe clamping mold 2.

[0027] refer to Figures 1-3 As shown, both the upper clamping mold 1 and the lower clamping mold 2 are equipped with pads 205. The pads 205 are made of rubber to increase the stability of clamping and to distribute the stress on the contact surface during clamping, thus protecting the pipe. The upper end face of the pad 205 is on the same plane as the upper end face of the clamping pipe 202. During the clamping process of the upper clamping mold 1 and the lower clamping mold 2, the pads 205 will not interfere with the clamping of the pipe. At the same time, the friction of its surface plays a stabilizing and decelerating role for the pipe during the cutting and extrusion process of the wedge assembly, avoiding the problem of slippage of the pipe causing a decrease in clamping accuracy and resulting in forming deviation.

[0028] refer to Figures 1-3 As shown, the wedge angle between the upper wedge 101 and the lower wedge 201 is typically 15° to 25°. When the angle is less than 15°, the upper wedge 101 and the lower wedge 201 are prone to jamming. When the angle is greater than 25°, the lower wedge 201 and the upper wedge 101 experience insufficient horizontal thrust. While the clamping cylinder 4 pushes the upper pipe clamping mold 1 downwards, the upper wedge 101 gradually approaches the lower wedge 201. After the upper wedge 101 contacts the lower wedge 201, it gradually presses down on the lower wedge 201, causing the lower pipe clamping mold 2 to achieve multi-directional coordinated movement. Through the vertical displacement of the upper pipe clamping mold 1 (i.e., the upper mold descends), the lower pipe clamping mold 2 is pressed after contact with the wedge surface, thus converting the vertical displacement into horizontal movement. After pushing the lower pipe clamping mold 2 to slide, the clamping of the pipe fitting is completed.

[0029] refer to Figures 4-5As shown, a spacer block 6 is provided between a pair of lower pipe clamping molds 2. The spacer block 6 is used to support and demold the clamped pipe fittings, preventing the pipe fittings from sticking to the mold after processing and becoming impossible to remove. The clamping groove 2021 on the spacer block 6 is connected to the clamping groove 2021 on the upper pipe clamping mold 1 and the lower pipe clamping mold 2, meaning that the spacer block 6 will not interfere with the pipe fittings. A spacer block cylinder 7 is installed at the bottom of the spacer block 6 and connected to the spacer block 6. After the processing of the pipe fittings is completed, the spacer block cylinder 7 moves upward and drives the spacer block 6 to make longitudinal displacement. During this process, it supports the pipe fittings on both sides that are not being demolded, forcing the pipe fittings to disengage from the clamping grooves 2021 on the lower pipe clamping mold 2.

[0030] refer to Figures 1-3 As shown, a tube expander 302 is installed on the forming mold 3. The tube expander 302 is used to plastically deform the fixed tube, including punching, bending and stretching. A tube expander bead 301 is installed on the tube expander 302 on the side of the tube near the tube. The tube expander bead 301 is an expansion tool with a curved surface or bevel. The tube is processed by gradually pushing the tube expander bead 301 into the tube.

[0031] refer to Figures 4-5 As shown, a connecting slider 303 is fixedly connected to the forming mold 3. The connecting slider 303 is mounted on the frame 10 and can slide along the direction of the connecting slider 303. A forming mold telescopic guide rail 8 that cooperates with the forming mold 3 is installed on the frame 10. The forming mold 3 can move laterally along the direction of the forming mold telescopic guide rail 8, so that the tube expander 302 moves closer to or away from the pipe. A forming cylinder 5 is installed on the frame 10. The forming cylinder 5 is used to push the forming mold 3 to move along the direction of the forming mold telescopic guide rail 8. One end of the forming cylinder 5 is fixedly connected to the forming mold 3. When the push rod of the forming cylinder 5 is pushed out, the tube expander bead 301 on the forming mold 3 performs the operation on the pipe. After the operation is completed, the push rod on the forming cylinder 5 retracts, causing the tube expander bead 301 to disengage from the pipe.

[0032] refer to Figures 4-5As shown, the pipe clamping mold 1 is provided with a first fixing groove 102, which is used to fix the pipe clamping mold 1. The frame 10 is equipped with upper and lower clamping guide rails 9 that cooperate with the first fixing groove 102. The direction of the upper and lower clamping guide rails 9 is vertical. The pipe clamping mold 1 can be vertically displaced along the direction of the upper and lower clamping guide rails 9. The clamping cylinder 4 pushes the pipe clamping mold 1 to move along the direction of the upper and lower clamping guide rails 9, and in this process, it moves closer to or away from the lower clamping mold 2. The frame 10 is equipped with a clamping cylinder 4, which is used to push the pipe clamping mold 1 to move. One end of the clamping cylinder 4 is fixedly connected to the pipe clamping mold 1. The push rod on the clamping cylinder 4 pushes the pipe clamping mold 1 to move downward along the direction of the upper and lower clamping guide rails 9, and uses a wedge structure to cooperate with the lower clamping mold 2 to complete the clamping of the pipe. Then the clamping cylinder 4 retracts the push rod to drive the pipe clamping mold 1 to separate from the pipe and reset.

[0033] In practical use, the pipe fitting is placed in the clamping grooves 2021 on the bottom pair of lower pipe clamping molds 2. The clamping cylinder 4 is activated to push the upper pipe clamping mold 1 downward along the direction of the upper and lower guide rails 9. During the process, the upper wedge block 101 on the upper pipe clamping mold 1 contacts the lower wedge block 201 on the lower pipe clamping mold 2. Under the action of the wedge structure, the lower pipe clamping mold 2 is forced to move, ultimately achieving precise clamping of the pipe fitting. Subsequently, the forming cylinder 5 pushes the forming mold 3 to move along the direction of the forming mold telescopic guide rail 8. The expansion bead 301 on the forming mold 3 expands the pipe fitting. Then, the forming cylinder 5 drives the forming mold 3 to reset. The upper pipe clamping mold 1, the lower pipe clamping mold 2, and the forming mold 3 are assembled together to process several pipe fittings at the same time. After processing is completed, the clamping cylinder 4 drives the upper pipe clamping mold 1 to retract and release the clamping of the pipe fitting. The spacer cylinder 7 pushes the spacer block 6 to move longitudinally and push the processed pipe fitting out of the clamping groove 2021 to achieve demolding of the pipe fitting. The process is repeated to complete the processing flow.

[0034] Compared with the prior art, the beneficial effect of this utility model is that it sets mutually cooperating wedge structures in the upper and lower clamping molds of the TEF tube expander. Through the cooperation of the wedge structures, the upper and lower clamping molds can quickly clamp the tube, improve the stability of clamping, shorten the clamping time, and thus improve the production efficiency of the TEF tube expander.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A clamping mold assembly for a TEF tube expander, comprising a frame, an upper tube clamping mold, a lower tube clamping mold, and a forming mold, characterized in that, The upper pipe clamping mold is provided with an upper wedge block, and the lower pipe clamping mold is provided with a lower wedge block that cooperates with the upper wedge block. Both the upper pipe clamping mold and the lower pipe clamping mold are provided with clamping openings. The lower pipe clamping mold is provided with a sliding groove, and a spacer block is provided between a pair of lower pipe clamping molds.

2. The clamping mold assembly for a TEF tube expander according to claim 1, characterized in that, Both the upper and lower clamping molds are equipped with clamping tubes, and the clamping tubes have clamping grooves that penetrate both the upper and lower clamping molds.

3. The clamping mold assembly for a TEF tube expander according to claim 2, characterized in that, The spacer block is provided with a clamping groove, which is connected to the clamping grooves provided on the upper and lower pipe clamping molds.

4. The clamping mold assembly for a TEF tube expander according to claim 1, characterized in that, Both the upper and lower clamping molds of the pipe are equipped with pads, and the upper end face of the pad is on the same plane as the upper end face of the clamping pipe.

5. A clamping mold assembly for a TEF tube expander according to claim 1, characterized in that, The angle between the upper and lower wedges is 15° to 25°.

6. The clamping mold assembly for a TEF tube expander according to claim 1, characterized in that, A spacer cylinder connected to the spacer block is installed at the bottom of the spacer block.

7. The clamping mold assembly for a TEF tube expander according to claim 1, characterized in that, A connecting slider is fixedly connected to the forming mold, and a forming mold telescopic guide rail that cooperates with the forming mold is installed on the frame.

8. A clamping mold assembly for a TEF tube expander according to claim 7, characterized in that, A forming cylinder is installed on the frame, and one end of the forming cylinder is fixedly connected to the forming mold.

9. A clamping mold assembly for a TEF tube expander according to claim 1, characterized in that, The tube clamping mold is provided with a first fixing groove, and the frame is equipped with upper and lower guide rails for the clamping mold that cooperate with the first fixing groove.

10. A clamping mold assembly for a TEF tube expander according to claim 9, characterized in that, A clamping cylinder is installed on the tube, and one end of the clamping cylinder is fixedly connected to the clamping mold on the tube.

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