Split type crimping machine

Abstract

The utility model provides a split type crimping machine which comprises a machine base and an installation channel arranged on the machine base, a lower die oil cylinder unit is arranged at the lower end of the installation channel, an upper die fixing frame and an upper die are arranged at the upper end of the installation channel, the lower end of the upper die is matched with the inner wall of the installation channel, and a positioning groove is formed in the inner wall of the upper end of the installation channel. The upper die fixing frame is provided with a positioning convex block, the positioning convex block is matched in the positioning groove in a sliding mode in the circumferential direction, the upper die fixing frame and the upper die are matched in a rotating and axial sliding mode in the circumferential direction, an elastic piece is arranged between the upper die fixing frame and the upper die, and when the upper die fixing frame is pressed downwards and rotated by 90 degrees clockwise or anticlockwise, the elastic piece is pressed downwards. The upper die fixing frame and the upper die can be pulled out of the mounting channel in the vertical direction. According to the split type crimping machine disclosed by the utility model, the assembling structure of the upper mold frame and the machine base is simple, the matching is stable, and the upper mold frame and the machine base can be easily disassembled without the participation of a thumb.

Description

Technical Field

[0001] The utility model relates to the technical field of power auxiliary equipment, in particular to a split type crimping machine. Background Art

[0002] In power construction operations, large-section wires are often crimped at high altitudes. However, most of the large-section wire crimping machines on the market are 100T and 200T crimping machines, which cannot meet the needs of large-section wires crimped at high altitudes; 300T crimping machines are required for crimping. However, existing crimping machines are heavy, inconvenient to use and carry, the crimping die is inconvenient to load and unload, the service life of the crimping die is short, and the more prominent problem is that the limiting and fixing methods of the crimping die in the clamp body are complicated, the crimping is unreliable, and the operation is inconvenient.

[0003] For this purpose, a split-type crimping machine with a small size and easy to carry came into being. However, when using a traditional split-type crimping machine, especially when operating in a narrow space, how to disassemble the upper mold frame and the clamp body (machine base) becomes a new problem. For example, patent CN208890062U discloses a split-type crimping machine, in which the upper cover and the clamp body are connected in the form of threaded matching. When disassembling, it needs to be rotated multiple times to separate from the clamp body, which is inconvenient to operate.

[0004] Another example is a split-type crimping machine disclosed in patent CN202586058U. The biggest feature of this product is that the upper die frame can be removed from the installation channel of the clamp body by rotating it 90° clockwise or counterclockwise. However, the anti-rotation locking structure of the upper die frame and the machine base in this structure is relatively complicated. During disassembly, it is necessary to press the positioning card with the thumb so that the positioning card can be removed from the positioning card slot before the upper die frame can be rotated, which makes disassembly inconvenient.

[0005] On the other hand, the installation structure of the upper mold frame and the upper mold in the prior art is relatively complicated and inconvenient to disassemble, which makes it difficult to repair or replace the upper mold. Utility Model Content

[0006] The problem solved by the utility model is to overcome at least one defect in the prior art and provide a split type crimping machine, wherein the upper die frame and the machine base have a simple assembly structure and stable matching, and the upper die frame and the machine base can be easily disassembled without the involvement of the thumb.

[0007] In order to solve the above problems, the utility model provides a split crimping machine, including a machine base, a mounting channel with an upper opening and through-going on both sides is provided on the machine base, a lower mold and a cylinder unit for driving the lower mold to rise and fall are provided at the lower end of the mounting channel, an upper mold fixing frame is detachably provided at the upper end of the mounting channel, an upper mold is connected to the lower end of the upper mold fixing frame, a limiting boss is convexly provided on the inner wall of the mounting channel, the lower end of the upper mold cooperates with the limiting boss, a positioning groove is provided on the inner wall of the upper end of the mounting channel, A positioning protrusion is provided on the upper mold fixing frame, and the limiting protrusion is slidably engaged in the positioning groove along the circumferential direction; the upper mold fixing frame and the upper mold are rotatable and axially slidable, and an elastic member is provided between the upper mold fixing frame and the upper mold, so that the upper mold fixing frame always has a tendency to move upward until the upper end surface is tightly abutted against the upper end surface of the positioning groove, and when the upper mold fixing frame is pressed downward and rotated 90 degrees clockwise or counterclockwise, the upper mold fixing frame together with the upper mold can be pulled out of the installation channel vertically.

[0008] Compared with the prior art, the utility model has the following advantages:

[0009] In the split-type crimping machine structure of the utility model, the upper die fixing frame and the upper die are arranged to be connected so as to be circumferentially rotatable and axially movable, and the upper die fixing frame and the upper die have movable space in the axial direction, and an elastic member is arranged between the upper die fixing frame and the upper die so that the upper die fixing frame always has the tendency to move upward until the upper end face is tightly pressed against the upper end face of the positioning groove, and when the upper die fixing frame is pressed downward and rotated 90 degrees clockwise or counterclockwise, the upper die fixing frame together with the upper die can be pulled out from the installation channel vertically. In this structure, when the crimping machine is in the initial state after installation, under the action of the elastic member, the upper end surface of the upper die fixing frame is tightly pressed against the upper end surface of the positioning groove to achieve circumferential anti-rotation limiting, thereby ensuring the stability of the upper and lower dies during pressing. When the die needs to be replaced, the upper die and the upper die fixing frame are first removed from the machine base at the same time, and then the upper die is disassembled, so that the upper die can be better disassembled and the operating space is not restricted. In addition, the disassembly of the upper die fixing frame and the machine base is also very simple. As long as the operator grabs the upper die fixing frame and presses it down as a whole, and overcomes the force of the elastic member and moves it down slightly, it can be rotated clockwise or counterclockwise. No matter which direction, after rotating 90°, the positioning protrusion on the upper die fixing frame can be detached from the positioning groove, and then the upper die fixing frame together with the upper die can be pulled out from the installation channel vertically, which is very convenient.

[0010] As an improvement, the upper mold fixing frame includes a rotation positioning block and an upper mold fixing block arranged from top to bottom, the positioning protrusion is arranged on the rotation positioning block, the rotation positioning block and the upper mold fixing block are connected to each other in an axially slidable and circumferentially relatively rotatable manner, a handle is arranged on the top of the rotation positioning block, the elastic member is arranged between the upper mold fixing block and the rotation positioning block, and the upper mold is detachably connected to the lower end of the upper mold fixing block. In the above improved structure, the upper mold fixing frame is divided into two parts, that is, the upper mold is not directly connected to the upper mold fixing frame, but is assembled and connected to the upper mold fixing block, and the corresponding rotation structure is arranged between the upper mold fixing block and the rotation positioning block, so as to facilitate the subsequent insertion, removal and replacement of the upper mold.

[0011] Further improved, the lower end of the rotation positioning block is provided with a circular mounting hole, the upper end of the upper mold fixed block is provided with a mounting column that is rotatably matched with the mounting hole, the outer peripheral wall of the mounting column is provided with an annular positioning groove, and at least two symmetrically distributed positioning screws are horizontally penetrated on the outer wall of the rotation positioning block, the inner end of the positioning screw is matched into the positioning groove, and the width of the positioning groove is greater than the diameter of the fixed screw. In the above improved structure, the rotational matching of the rotation positioning block and the upper mold fixed block is achieved through the mounting hole and the mounting column structure, and the axial anti-slip limit is achieved by cooperating with the annular positioning groove and the positioning screw.

[0012] In a further improvement, the elastic member includes two symmetrically arranged first springs, and the upper end surface of the mounting column is provided with two spring holes for accommodating the first springs respectively; a steel ball located at the upper end of the first spring and movable in the vertical direction is provided in each of the two spring holes, and four spherical positioning holes evenly distributed in the circumferential direction and used to position the steel balls are provided on the bottom wall of the mounting hole. In the improved structure, the first springs, the steel balls and the spherical positioning holes at the corresponding positions are provided to achieve stable limiting after the rotating positioning block and the upper mold fixing block rotate 90° in any direction.

[0013] Further improvement, the lower end of the upper mold fixing block is provided with a semicircular positioning channel, the upper end face of the upper mold matches the positioning channel, the lower end face of the upper mold is concavely formed with an upper mold cavity, and the lower end face of the upper mold is located on both sides of the upper mold cavity and is provided with positioning steps, the lower end of the upper mold fixing block and the two sides of the opening end of the positioning channel are detachably provided with positioning blocks, the inner ends of the two positioning blocks are respectively positioned and matched with the two positioning steps, and the outer ends of the two positioning blocks are respectively provided with limiting grooves matched with the limiting bosses. In the above improved structure, the positioning blocks realize radial limiting of the upper mold fixing block and the upper mold, and the structure is simple, easy to disassemble and assemble, and simplifies the later replacement process.

[0014] In a further improvement, the upper end surface of the upper mold is provided with an annular groove distributed along its circumference, and the inner wall of the positioning channel is provided with a positioning pin that can be extended and retracted along its radial direction, and the inner end of the positioning pin is locked and fitted into the annular groove; the upper mold fixing block is also provided with an unlocking component for driving the positioning pin away from the annular groove. In the above improved structure, the provision of the positioning pin and the annular groove realizes the axial limitation between the upper mold and the upper mold fixing block, and improves the structural stability.

[0015] In a further improvement, a positioning pin hole extending radially thereof is provided on the inner wall of the positioning channel, the outer end of the positioning pin is slidably fitted in the positioning pin hole, and a second spring is provided between the outer end of the positioning pin and the bottom wall of the positioning pin hole, so that the positioning pin always has a tendency to be axially locked in the annular groove. In the above improved structure, the automatic resetting of the positioning pin is realized by the second spring, which is very convenient.

[0016] Further improved, the unlocking assembly includes a push rod, the upper mold fixing block is axially provided with a fitting hole connected to the positioning pin hole, one end of the push rod is slidably fitted in the fitting hole, and the other end protrudes from the outer end surface of the upper mold fixing block; the push rod is provided with a V-shaped guide block at one end near the positioning pin hole, and a V-shaped guide groove is provided on the outer wall of the positioning pin, and when the push rod is pressed, the positioning pin is axially away from the annular groove under the cooperation of the V-shaped guide block and the V-shaped guide groove to achieve unlocking. In the above improved structure, by pushing the push rod, the positioning pin can be driven away from the annular groove under the action of the V-shaped guide block and the V-shaped guide groove to achieve unlocking, which is very convenient.

[0017] In a further improvement, a thrust screw extending to the fitting hole is provided on the upper mold fixing block, and an annular thrust groove with a width greater than the diameter of the thrust screw is provided on the outer peripheral wall of the push rod, and the inner end of the thrust screw can be slidably fitted into the thrust groove. In the above improved structure, the thrust screw mainly limits the limit position of the push rod's axial movement in two directions, thereby preventing the push rod from being disengaged from the fitting hole.

[0018] Other improved features and advantages of the utility model will be described in the subsequent specific embodiments, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be achieved and obtained through the structures specifically pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the split type crimping machine of the utility model;

[0020] Figure 2It is a half-section diagram of the split type crimping machine of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the upper mold assembly in the utility model;

[0022] Figure 4 for Figure 3 Another angle diagram of the middle and upper mold assembly;

[0023] Figure 5 for Figure 3 A half-section view of the middle and upper die assembly;

[0024] Figure 6 for Figure 3 Another angled cross-sectional view of the middle and upper die assembly;

[0025] Figure 7 for Figure 6 Enlarged structural diagram at point A in the middle.

[0026] Description of reference numerals:

[0027] Base; 2. Lower mold; 3. Cylinder unit; 4. Upper mold fixing frame; 5. Upper mold; 6. Limiting boss; 7. Positioning groove; 8. Positioning convex block; 9. Elastic member; 10. Rotary positioning block; 11. Upper mold fixing block; 12. Handle; 13. Mounting hole; 14. Mounting column; 15. Positioning groove; 16. Positioning screw; 17. Spring hole; 18. Steel ball; 19. Spherical positioning hole; 20. Positioning channel; 21. Positioning step; 22. Positioning pressure block; 23. Limiting groove; 24. Annular groove; 25. Positioning pin; 26. Positioning pin hole; 27. Second spring; 28. Push rod; 29. ​​Mounting hole; 30. V-shaped guide block; 31. V-shaped guide groove; 32. Thrust screw; 33. Thrust groove; 34. Propose notch; 35. Piston. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "upper end", "lower end", "outer side wall", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figure 1 , 2 As shown, the utility model provides a split crimping machine, including a machine base 1, a mounting channel with an upper opening and through both sides is arranged on the machine base 1, a lower mold 2 and a cylinder unit 3 for driving the lower mold 2 to rise and fall are arranged at the lower end of the mounting channel, an upper mold fixing frame 4 is detachably arranged at the upper end of the mounting channel, an upper mold 5 is connected to the lower end of the upper mold fixing frame 4 to form an upper mold assembly, specifically, a crimping channel for the cable connection end to pass through is formed between the upper mold 5 and the lower mold 2, and the crimping channel here is opposite to the horizontal opening along the mounting channel.

[0032] A limiting boss 6 is convexly provided on the inner wall of the installation channel, and the lower end of the upper mold 5 cooperates with the limiting boss 6. A positioning groove 15 is provided on the inner wall of the upper end of the installation channel, and a positioning protrusion 8 is provided on the upper mold fixing frame 4. The limiting boss can be slidably matched in the positioning groove 15 along the circumferential direction; the upper mold fixing frame 4 and the upper mold 5 can be rotatably matched along the circumferential direction, and the upper mold fixing frame 4 and the upper mold 5 have movable space in the axial direction. An elastic member 9 is provided between the upper mold fixing frame 4 and the upper mold 5, so that the upper mold fixing frame 4 always has a tendency to move upward until the upper end face is tightly pressed against the upper end face of the positioning groove 15. When the upper mold fixing frame 4 is pressed downward and rotated 90 degrees clockwise or counterclockwise, the upper mold fixing frame 4 together with the upper mold 5 can be pulled out of the installation channel vertically. In this structure, when the crimping machine is in the initial state after installation, under the action of the elastic member 9, the upper end surface of the upper die fixing frame 4 and the upper end surface of the positioning groove 15 are tightly pressed against each other to achieve circumferential anti-rotation limit, thereby ensuring the stability of the upper die 5 and the lower die 2 during the pressing action. When the die needs to be replaced, the upper die 5 and the upper die fixing frame 4 are first removed from the machine base 1 at the same time, and then the upper die 5 is removed. In this way, the upper die 5 can be removed better and the operation space is not limited. In addition, the upper die fixing frame 4 and the machine base 1 are also very simple to remove. As long as the operator grasps the upper die fixing frame 4 and presses it downward as a whole, after overcoming the force of the elastic member 9 and moving it slightly downward, it can be rotated clockwise or counterclockwise. No matter which direction, after rotating 90°, the positioning protrusion 8 on the upper die fixing frame 4 can be disengaged from the positioning groove 15, and then the upper die fixing frame 4 together with the upper die 5 can be pulled out from the installation channel vertically, which is very convenient. In this structure, in order to better grasp the upper die fixing frame 4, a handle 12 is also provided on its top. In addition, in the above structure, the cylinder unit 3 that drives the lower mold 2 to rise and fall is a prior art. For details, please refer to a split crimping machine disclosed in patent CN202586058U, which will not be elaborated here.

[0033] In this embodiment, the upper die fixing frame 4 includes a rotational positioning block 10 and an upper die fixing block 11 arranged from top to bottom, wherein the positioning protrusion 8 is arranged on the rotational positioning block 10, the rotational positioning block 10 and the upper die fixing block 11 are connected so as to be slidable in the axial direction and relatively rotatable in the circumferential direction, a handle 12 is arranged on the top of the rotational positioning block 10, an elastic member 9 is arranged between the upper die fixing block 11 and the rotational positioning block 10, and the upper die 5 is detachably connected to the lower end of the upper die fixing block 11. In this structure, since the upper die fixing frame 4 and the upper die 5 need to rotate, and the replacement between different specifications of the upper die 5 must also be considered, the upper die fixing frame 4 is divided into two parts, that is, the upper die 5 is not directly connected to the upper die fixing frame 4, but is assembled and connected to the upper die fixing block 11, and the corresponding rotation structure is arranged between the upper die fixing block 11 and the rotational positioning block 10, so as to facilitate the subsequent insertion, removal and replacement of the upper die 5. In this structure, two protrusion notches 34 are symmetrically arranged on the outer circumference of the rotation positioning block 10, and the width between the two protrusion notches 34 matches the width dimension of the installation channel. In the initial state, when the upper mold 5 is installed along the set direction, the two protrusion notches 34 on the rotation positioning block 10 can be positioned to fit into the installation channel. When the upper mold 5 is installed in place, the circumferential rotation of the rotation positioning block 10 can make the positioning protrusions 8 on its outer circumference fit into the positioning grooves 15 on the inner wall of the installation channel, thereby realizing the axial limitation of the upper mold assembly.

[0034] More specifically, in the above structure, a circular mounting hole 13 is concavely provided in the middle of the lower end of the rotation positioning block 10, a mounting column 14 is provided at the upper end of the upper die fixing block 11, which is rotatably matched with the mounting hole 13, and an annular positioning groove 15 is provided on the outer peripheral wall of the mounting column 14, and at least two symmetrically distributed positioning screws 16 are horizontally penetrated on the outer wall of the rotation positioning block 10, the inner end of the positioning screw 16 is matched in the positioning groove 15, and the width of the positioning groove 15 is greater than the diameter of the positioning screw 16. In this structure, the upper die fixing block 11 is rotatably matched in the mounting hole 13 of the rotation positioning block 10 through the mounting column 14, and there is a movable space between the two in the axial direction, preferably, the elastic member 9 is provided between the top of the mounting column 14 and the bottom of the mounting hole 13, and under the action of the elastic member 9, the upper die fixing block 11 and the rotation positioning block 10 are separated, and the axial position is limited by the positioning screw 16, and at this time, the upper end surface of the positioning groove 15 is in contact with the positioning screw 16.

[0035] In this embodiment, Figure 5As shown, the elastic member 9 includes two symmetrically arranged first springs, and the upper end surface of the mounting column 14 is provided with two spring holes 17 for accommodating the first springs respectively; the two spring holes 17 are provided with steel balls 18 located at the upper end of the first spring and movable in the vertical direction, and the bottom wall of the mounting hole 13 is provided with four spherical positioning holes 19 evenly distributed in the circumferential direction and used to position the steel balls 18. In this structure, the arrangement of the four spherical positioning holes 19 enables the upper end surface of each steel ball 18 to be limited with the corresponding spherical positioning hole 19 on the rotating positioning block 10 when the rotating positioning block 10 and the upper mold fixing block 11 are in the initial position and rotated 90° clockwise or counterclockwise, thereby realizing circumferential limitation.

[0036] In addition, in the above structure, the detachable connection mechanism between the upper mold 5 and the upper mold fixing block 11 specifically refers to that a semicircular positioning channel 20 is arranged at the lower end of the upper mold fixing block 11, and the shape of the upper end face of the upper mold 5 matches the positioning channel 20, and is also a semicircular structure; the lower end face of the upper mold 5 is concavely formed with an upper mold cavity for pressing the upper end of the crimping part, and the lower end face of the upper mold 5 is located on both sides of the upper mold cavity and positioning steps 21 are arranged, and the lower end of the upper mold fixing block 11 and the two sides of the opening end of the positioning channel 20 are detachably provided with positioning blocks 22, and the inner ends of the two positioning blocks 22 are respectively positioned and matched with the two positioning steps 21. When the upper mold 5 needs to be replaced, the two corresponding positioning blocks 22 can be removed, which is very convenient.

[0037] In the above structure, the outer ends of the two positioning blocks 22 are respectively provided with limiting grooves 23 that match the limiting bosses 6. Preferably, the limiting bosses 6 are lower positioning screws 16 that are transversely penetrated on the side wall of the base. When the upper mold fixing frame 4 and the upper mold 5 are vertically installed into the installation channel from top to bottom to the set position, the inner ends of the lower positioning screws 16 are respectively matched in the corresponding limiting grooves 23, which not only realizes the vertical position limitation of the upper mold 5, but also realizes the circumferential anti-rotation.

[0038] In this embodiment, in order to facilitate the installation of the upper mold 5, the positioning step 21 at the lower end of the upper mold 5 is connected along its axial ends, and the inner ends of the two positioning blocks 22 are axially slidable between the two positioning steps 21. Therefore, when disassembling the upper mold 5, the positioning block 22 does not need to be disassembled, and it can be directly pulled out of the positioning channel 20 along the axial direction.

[0039] In order to further ensure the stability of the connection between the upper mold 5 and the upper mold fixing block 11, in this embodiment, Figure 6As shown, an annular groove 24 distributed along its circumferential direction is provided inwardly on the upper end surface of the upper mold 5, and a positioning pin 25 that can be extended and retracted along its radial direction is provided on the inner wall of the positioning channel 20, and the inner end of the positioning pin 25 is locked and fitted into the annular groove 24; an unlocking component for driving the positioning pin 25 away from the annular groove 24 is also provided on the upper mold fixing block 11. In this structure, the upper mold 5 and the upper mold fixing block 11 are limited in the axial direction after installation through the provision of the positioning pin 25, and will not slide, thereby further improving the stability of the two components after assembly.

[0040] like Figure 6 , 7 As shown, in the above structure, a locating pin 25 hole extending radially thereof is provided on the inner wall of the locating channel 20, the outer end of the locating pin 25 slides in the locating pin 25 hole, and a second spring 27 is provided between the outer end of the locating pin 25 and the bottom wall of the locating pin 25 hole. After the second spring 27 is provided, the locating pin 25 always has a tendency to be axially locked in the annular groove 24. However, when the upper mold 5 needs to be removed or the upper mold 5 is just being installed, it is necessary to first operate the unlocking assembly to drive the locating pin 25 to move radially outward until its inner end face is flush with the inner wall of the locating channel 20. Once the unlocking assembly is released, the second spring 27 can drive the locating pin 25 to move radially inward again until it is matched with the annular groove 24, thereby realizing the axial limitation of the upper mold 5 in the locating channel 20.

[0041] In this embodiment, more specifically, Figure 7 As shown, the unlocking assembly includes a push rod 28, and a fitting hole 29 connected to the locating pin 25 hole is axially arranged on the upper mold fixing block 11. One end of the push rod 28 is slidably fitted in the fitting hole 29, and the other end protrudes from the outer end surface of the upper mold fixing block 11; a V-shaped guide block 30 is provided at one end of the push rod 28 near the locating pin 25 hole, and a V-shaped guide groove 31 is provided on the outer wall of the locating pin 25. When the push rod 28 is pushed, under the cooperation of the V-shaped guide block 30 and the V-shaped guide groove 31, the locating pin 25 moves axially toward the end away from the annular groove 24 until it is completely disengaged from the annular groove 24 to achieve unlocking. More specifically, a thrust screw 32 extending to the mounting hole 29 is passed through the upper mold fixing block 11, and a thrust groove 33 with a ring shape and a width greater than the diameter of the thrust screw 32 is provided on the outer peripheral wall of the push rod 28. The inner end of the thrust screw 32 can be slidably fitted into the thrust groove 33. The thrust screw 32 is mainly used to limit the extreme position of the axial movement of the push rod 28 in two directions, thereby preventing the push rod 28 from escaping from the mounting hole 29.

[0042] In the above structure, when the upper mold 5 needs to be disassembled for replacement, it is only necessary to push the push rod 28 inward. Under the cooperation of the inclined surfaces of the V-shaped guide block 30 and the V-shaped guide groove 31, the positioning pin 25 moves axially outward until it is completely separated from the annular groove 24, thereby losing the axial limit between the upper mold 5 and the positioning channel 20. At this time, the upper mold 5 can be pulled out of the positioning channel 20; similarly, when the new upper mold 5 is installed into the positioning channel 20, in order to prevent interference with the positioning pin 25, it is necessary to push the push rod 28 inward to drive the positioning pin 25 to move outward along its axial direction. However, when the upper mold 5 is installed in place, the push rod 28 is pulled out in the opposite direction. After losing the constraint, the positioning pin 25 moves axially inward under the restoring force of the second spring 27 to lock and fit in the annular groove 24 on the outer peripheral wall of the upper mold 5, thereby achieving axial limit.

[0043] In this embodiment, Figure 2 As shown, the lower mold 2 is detachably connected to the piston of the cylinder unit 3, and the detachable connection structure is the same as the connection structure between the upper mold 5 and the upper mold fixing block 11, which will not be elaborated here.

[0044] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A split type crimping machine, comprising a machine base (1), the machine base (1) being provided with a mounting channel which is open at the top and passes through at both sides, a lower die (2) and a cylinder unit (3) for driving the lower die (2) to rise and fall are provided at the lower end of the mounting channel, an upper die fixing frame (4) is detachably provided at the upper end of the mounting channel, an upper die (5) is connected to the lower end of the upper die fixing frame (4), and the characteristics are: A limiting boss (6) is provided on the inner wall of the installation channel in an outwardly protruding manner, and the lower end of the upper mold (5) cooperates with the limiting boss (6). A positioning groove (15) is provided on the inner wall of the upper end of the installation channel, and a positioning convex block (8) is provided on the upper mold fixing frame (4). The limiting boss (6) is slidably matched in the positioning groove (15) along the circumferential direction; the upper mold fixing frame (4) and the upper mold (5) are rotatable and axially slidable. An elastic member (9) is provided between the upper mold fixing frame (4) and the upper mold (5) so that the upper mold fixing frame (4) always has a tendency to move upward until the upper end face is tightly pressed against the upper end face of the positioning groove (15). When the upper mold fixing frame (4) is pressed downward and rotated 90 degrees clockwise or counterclockwise, the upper mold fixing frame (4) together with the upper mold (5) can be pulled out of the installation channel vertically.

2. The split type crimping machine according to claim 1, characterized in that: The upper mold fixing frame (4) comprises a rotation positioning block (10) and an upper mold fixing block (11) which are arranged from top to bottom, the positioning protrusion (8) is arranged on the rotation positioning block (10), the rotation positioning block (10) and the upper mold fixing block (11) are connected to each other in an axially slidable and circumferentially relatively rotatable manner, a handle (12) is arranged on the top of the rotation positioning block (10), the elastic member (9) is arranged between the upper mold fixing block (11) and the rotation positioning block (10), and the upper mold (5) is detachably connected to the lower end of the upper mold fixing block (11).

3. The split type crimping machine according to claim 2, characterized in that: The lower end of the rotation positioning block (10) is provided with a circular mounting hole (13), the upper end of the upper mold fixing block (11) is provided with a mounting column (14) rotatably matched with the mounting hole (13), the outer peripheral wall of the mounting column (14) is provided with an annular positioning groove (15), and at least two symmetrically distributed positioning screws (16) are horizontally penetrated on the outer wall of the rotation positioning block (10), the inner end of the positioning screw (16) is matched in the positioning groove (15), and the width of the positioning groove (15) is greater than the diameter of the positioning screw (16).

4. The split type crimping machine according to claim 3, characterized in that: The elastic member (9) comprises two symmetrically arranged first springs, and the upper end surface of the mounting column (14) is provided with two spring holes (17) for respectively accommodating the first springs; a steel ball (18) located at the upper end of the first spring and movable in the vertical direction is provided in each of the two spring holes (17), and four spherical positioning holes (19) evenly distributed in the circumferential direction and used for positioning the steel balls (18) are provided on the bottom wall of the mounting hole (13).

5. The split type crimping machine according to claim 2, 3 or 4, characterized in that: A semicircular positioning channel (20) is provided at the lower end of the upper mold fixing block (11), the upper end surface of the upper mold (5) matches the positioning channel (20), the lower end surface of the upper mold (5) is concavely formed with an upper mold cavity, and positioning steps (21) are provided on both sides of the lower end surface of the upper mold (5) located at the upper mold cavity, and positioning blocks (22) are detachably provided at the lower end of the upper mold fixing block (11) and on both sides of the opening end of the positioning channel (20), the inner ends of the two positioning blocks (22) are respectively positioned and matched with the two positioning steps (21), and the outer ends of the two positioning blocks (22) are respectively provided with limiting grooves (23) matched with the limiting bosses (6).

6. The split type crimping machine according to claim 5, characterized in that: The upper end surface of the upper mold (5) is provided with an annular groove (24) distributed along its circumference, and the inner wall of the positioning channel (20) is provided with a positioning pin (25) that can be extended and retracted along its radial direction, and the inner end of the positioning pin (25) is locked and fitted into the annular groove (24); the upper mold fixing block (11) is also provided with an unlocking component for driving the positioning pin (25) away from the annular groove (24).

7. The split type crimping machine according to claim 6, characterized in that: A positioning pin (25) hole extending radially thereof is provided on the inner wall of the positioning channel (20), the outer end of the positioning pin (25) is slidably fitted in the positioning pin (25) hole, and a second spring (27) is provided between the outer end of the positioning pin (25) and the bottom wall of the positioning pin (25) hole, so that the positioning pin (25) always has a tendency to be axially locked in the annular groove (24).

8. The split type crimping machine according to claim 7, characterized in that: The unlocking component comprises a push rod (28), and a fitting hole (29) connected to the positioning pin (25) hole is axially arranged on the upper mold fixing block (11). One end of the push rod (28) is slidably fitted in the fitting hole (29), and the other end protrudes from the outer end surface of the upper mold fixing block (11); a V-shaped guide block (30) is arranged at one end of the push rod (28) near the positioning pin (25) hole, and a V-shaped guide groove (31) is arranged on the outer wall of the positioning pin (25). When the push rod (28) is pressed, under the cooperation of the V-shaped guide block (30) and the V-shaped guide groove (31), the positioning pin (25) moves axially away from the annular groove (24) to achieve unlocking.

9. The split type crimping machine according to claim 8, characterized in that: The upper mold fixing block (11) is provided with a thrust screw (32) extending to the fitting hole (29); the outer peripheral wall of the push rod (28) is provided with an annular thrust groove (33) with a width greater than the diameter of the thrust screw (32); the inner end of the thrust screw (32) can be slidably fitted into the thrust groove (33).

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