Die rapid replacement structure of terminal crimping machine

Abstract

The utility model discloses a die quick replacement structure of a terminal crimping machine, which comprises a punching machine body, an upper die holder and a lower die holder are fixed on the punching machine body, and the upper die holder and the lower die holder are respectively connected with an upper module and a lower module through quick assembly components. The quick-mounting assembly comprises a guide plate, the guide plate is provided with a sliding groove, two sliding clamping blocks are arranged in the sliding groove, screw rods which are opposite in rotating direction and connected are rotationally arranged at the end blocks at the two ends of the guide plate, and the clamping blocks are in threaded fit with the screw rods. A fine adjustment cylinder, a positioning assembly and the like are further arranged. The screw rod can be driven by rotating the adjusting wheel, so that the clamping block slides to realize rapid clamping of the mold; the fine-tuning cylinder is matched with the positioning groove to accurately and finely tune the position of the mold; and the positioning assembly prevents the screw rod from maloperation. In addition, the dovetail groove and the inclined plane enhance the connection stability, and the guide pillar and the guide sleeve ensure the motion precision. The structure realizes rapid replacement of the die, improves production efficiency and crimping precision, and has the advantages of simple operation, strong stability and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to connecting processing equipment technical field, concretely is a mould quick replacement structure of terminal crimping machine. BACKGROUND

[0002] The terminal crimping machine mould is a key component for realizing reliable connection of terminals and wires, generally composed of upper and lower mould blocks installed on the upper and lower mould seats of a punch press, fixed through quick mounting assemblies, and designed in shape and structure according to crimping requirements. In operation, the upper mould block moves downward under the driving of the power mechanism of the punch press, cooperates with the lower mould block to apply pressure, and makes the terminal plastically deform to wrap the wire. The types are various, including electronic and electrical, automobile wire harness terminal moulds, etc. according to application fields, and open type, closed end type, piercing type terminal moulds, etc. according to terminal shape and crimping process, to meet different crimping requirements.

[0003] In the prior art, a wire terminal crimping machine convenient for replacing crimping moulds with publication number "CN216929137U" is provided with a rack, an electric motor is installed on the top of the rack through bolts, and an upper support plate is fixedly connected to the top of the connecting shaft. A telescopic air cylinder is installed at the top edge of the rack through bolts. The connecting shaft is connected to the transmission shaft through a belt pulley mechanism, a support plate is fixed to the top of the lower connecting shaft, a lower pressing mould is fixedly installed on the upper end surface of the support plate, a fixed cylinder is fixed to the inner wall of the rack, and a limiting rod is movably connected to the end of the fixed cylinder. The wire terminal crimping machine convenient for replacing crimping moulds adjusts different crimping moulds to the processing area in a rotating manner during wire crimping, and thus can realize crimping operation of different models or specifications of wires through the same crimping machine, reduces cost, and meets random conversion of different crimping moulds.

[0004] However, the prior art still has great deficiencies, such as:

[0005] The traditional terminal crimping machine mould may be installed and fixed by screw fastening and the like. Each time the mould is replaced, the operator needs to use tools to loosen or tighten a plurality of screws one by one, which takes a long time, especially in the production scene where the mould needs to be frequently replaced, which will seriously affect the production efficiency. UTILITY MODEL CONTENTS

[0006] The utility model aims to provide a mould quick replacement structure of terminal crimping machine to solve the problems in the above background technology.

[0007] To achieve the above purpose, the utility model provides the following technical scheme:

[0008] The utility model provides a mould quick replacement structure of terminal crimping machine, including punch press body, the upper die holder and lower die holder are fixedly arranged on the punch press body, the upper die holder is fixedly provided with upper module through quick -mounting assembly, the lower die holder is also fixedly provided with lower module through quick -mounting assembly,

[0009] The quick -mounting assembly includes a guide plate having a sliding groove formed therein, and two clamping blocks are slidably arranged in the sliding groove.

[0010] The guide plate is fixedly provided with end blocks at both ends, and screw rods are rotatably arranged on the end blocks.

[0011] The rotation directions of the screw rods on the two end blocks are opposite, and the two screw rods are fixedly connected.

[0012] The quick -mounting assembly further includes a fine adjustment cylinder rotatably arranged on the clamping block.

[0013] The end blocks are fixedly provided with sliding columns, and the sliding columns are fixedly provided with positioning plates at one end.

[0014] The sliding columns are slidably provided with sliding plates, and springs are arranged between the sliding plates and the positioning plates.

[0015] The positioning plates are fixedly provided with positioning blocks, and the positioning blocks are matched with the positioning wheel.

[0016] The screw rods away from the positioning wheel are fixedly provided with adjusting wheels.

[0017] The adjusting wheels are provided with a plurality of through holes.

[0018] The upper module and the lower module are provided with dovetail grooves, and the clamping blocks are provided with inclined surfaces matched with the dovetail grooves.

[0019] 1. Through the design of the quick -mounting assembly, the upper module and the upper die holder, and the lower module and the lower die holder can be quickly connected and separated.

[0020] 2. When fine adjustment of the mold position is needed, the bolt is unscrewed and the fine adjustment cylinder is rotated, the fine adjustment cylinder drives the clamping block to produce a small displacement through the thread cooperation with the screw rod, so that the precise adjustment of the mold position is realized. This fine adjustment function can meet the production scenes of some higher requirements for the crimping position precision, and improves the consistency and yield of products.

[0021] 3. The positioning block in the positioning assembly cooperates with the positioning wheel, and can lock the rotating position of the screw rod. In normal work, the screw rod is prevented from rotating due to accidental touching of the adjusting wheel and the like, so that the stability of the mold clamping state is ensured, and quality problems and safety hazards caused by mold loosening are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a three-dimensional structure schematic view of the whole device of the utility model;

[0023] Figure 2 It is a three-dimensional structure schematic view of the upper die seat and the lower die seat of the utility model;

[0024] Figure 3 It is another perspective three-dimensional structure schematic view of the upper die seat and the lower die seat of the utility model;

[0025] Figure 4 It is a three-dimensional structure schematic view of the lower die seat and the quick mounting assembly of the utility model;

[0026] Figure 5 It is a sectional view of the lower die seat and the quick mounting assembly of the utility model;

[0027] Figure 6 It is a three-dimensional structure schematic view of the positioning assembly of the utility model;

[0028] Figure 7 It is a sectional view of the positioning assembly of the utility model.

[0029] In the figure: 1, punch press body; 2, upper die seat; 3, lower die seat; 4, upper module; 5, lower module; 6, quick mounting assembly; 61, guide plate; 611, sliding groove; 62, clamping block; 621, fine adjustment cylinder; 6211, positioning groove; 622, bolt; 63, end block; 631, screw rod; 6311, adjusting wheel; 63111, through hole; 6312, positioning wheel; 63121, positioning strip; 632, sliding column; 6321, positioning plate; 6322, sliding plate; 6323, spring; 6324, positioning block; 7, dovetail groove; 8, inclined plane; 9, guide column; 10, guide sleeve. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0031] Please refer to Figures 1-7 The utility model provides a technical scheme:

[0032] The die quick replacement structure of the terminal crimping machine is mainly composed of a punch press body 1 and a die quick mounting assembly 6 matched with the punch press body 1.

[0033] The punch press body 1 is the basis of the whole device, and its structure can adopt various forms. Here, a common mechanical transmission structure is taken as an example for description. The punch press body 1 comprises a motor, a speed reducer, a crank, a connecting rod and a sliding block. The motor serves as a power source, is connected with the input shaft of the speed reducer through a motor shaft and provides initial power for the whole punching process. After the motor is started, the high-speed rotating motor shaft drives the gear set in the speed reducer to rotate, and the speed reducer converts the high speed of the motor into low speed according to its transmission ratio and correspondingly increases the torque, which is output to the crank connected with the output shaft of the speed reducer.

[0034] The crank is usually a component with an eccentric structure, one end of which is fixedly connected with the output shaft of the speed reducer and does circular motion under the driving of the power output by the speed reducer. One end of the connecting rod is movably connected with the eccentric part of the crank through a pin shaft or the like, and the other end is movably connected with the sliding block. When the crank does circular motion, the connecting rod converts the circular motion of the crank into the up-down linear reciprocating motion of the sliding block along the guide rail, thereby realizing the punching action on the die.

[0035] The upper die holder 2 is located at the upper part of the punch press body 1, and the lower die holder 3 is located at the lower part. The upper die holder 2 and the lower die holder 3 are oppositely arranged and are respectively used for mounting the upper die module 4 and the lower die module 5, and are basic components for die mounting and fixing.

[0036] The upper die holder 2 and the upper die module 4 and the lower die holder 3 and the lower die module 5 are connected quickly and stably through the quick mounting assembly 6. The quick mounting assembly 6 mainly comprises a guide plate 61, a clamping block 62, an end block 63, a screw rod 631, a fine adjustment cylinder 621 and a positioning assembly.

[0037] The guide plate 61 is a long strip-shaped plate structure, and two end blocks 63 are vertically and fixedly connected to two ends of the guide plate 61 respectively. A sliding groove 611 is formed in the middle of the guide plate 61 along the length direction of the guide plate 61. The shape and size of the sliding groove 611 are adapted to the two clamping blocks 62, so that the two clamping blocks 62 can smoothly slide in the sliding groove 611. A screw rod 631 is rotatably arranged on each end block 63 through a bearing or other rotating connection structure. The two screw rods 631 are opposite in rotation direction, and are fixedly connected together through a shaft coupling or other connecting component at the opposite ends of the two screw rods 631, so as to ensure that the two screw rods 631 can synchronously rotate when one of the screw rods 631 is rotated.

[0038] A fine adjustment cylinder 621 is rotatably arranged on each clamping block 62. An inner wall of the fine adjustment cylinder 621 is provided with an inner thread matched with the screw rod 631, so that the fine adjustment cylinder 621 can be matched with the screw rod 631 through the thread. A plurality of positioning grooves 6211 are uniformly formed in the circumferential direction on the outer circumferential surface of the fine adjustment cylinder 621. A detachable bolt 622 is arranged on the clamping block 62 corresponding to the position of the positioning groove 6211 of the fine adjustment cylinder 621. When the bolt 622 is screwed and inserted into a certain positioning groove 6211 of the fine adjustment cylinder 621, the position of the fine adjustment cylinder 621 is locked, thereby limiting the position of the clamping block 62 in the sliding groove 611; when the bolt 622 is unscrewed and taken out of the positioning groove 6211, the fine adjustment cylinder 621 can be freely rotated.

[0039] The positioning assembly mainly comprises a positioning wheel 6312, a positioning strip 63121, a sliding column 632, a positioning plate 6321, a sliding plate 6322, a spring 6323 and a positioning block 6324. The positioning wheel 6312 is fixedly arranged at one end of one of the screw rods 631 away from the connecting end of the other screw rod 631. A plurality of positioning strips 63121 are fixedly arranged on the outer circumferential surface of the positioning wheel 6312 in the circumferential direction. The sliding column 632 is fixedly arranged on the end block 63 perpendicularly to the surface of the end block 63. One end of the sliding column 632 is fixedly connected with the positioning plate 6321 after penetrating through the sliding plate 6322. The sliding plate 6322 can slide on the sliding column 632 in the axial direction of the sliding column 632, and the spring 6323 is arranged between the sliding plate 6322 and the positioning plate 6321 and is always in a compressed state.

[0040] The positioning block 6324 is fixedly arranged on the positioning plate 6321 close to one side of the positioning wheel 6312. The shape of the positioning block 6324 is matched with that of the positioning strip 63121 on the positioning wheel 6312, so that the rotation of the screw rod 631 is limited when the positioning block 6324 cooperates with the positioning strip 63121 on the positioning wheel 6312. When the positioning plate 6321 is pulled away from the positioning wheel 6312 and rotated by a certain angle against the elastic force of the spring 6323, the positioning block 6324 can be disengaged from the positioning wheel 6312, so that the screw rod 631 can be freely rotated.

[0041] On the screw rod 631 far away from the positioning wheel 6312, the adjusting wheel 6311 is fixedly arranged. The adjusting wheel 6311 is disc-shaped structure, and a plurality of through holes 63111 are uniformly arranged on the outer circumferential surface of the adjusting wheel 6311 in the circumferential direction, so that the operator can insert a tool (such as a wrench) into the through hole 63111 to rotate the adjusting wheel 6311, thereby driving the screw rod 631 to rotate.

[0042] On the two side surfaces of the upper module 4 and the lower module 5, dovetail grooves 7 are arranged. The dovetail groove 7 is trapezoidal in shape, and the opening direction thereof is related to the mounting direction of the module. Correspondingly, on the side of the clamping block 62 in contact with the module, a slope 8 matching the dovetail groove 7 is arranged. When the clamping block 62 is driven by the screw rod 631 to approach the module, the slope 8 on the clamping block 62 closely fits the dovetail groove 7 on the module, thereby clamping the module.

[0043] In addition, a plurality of guide columns 9 are vertically fixed on the punch body 1 along the movement direction of the upper die holder 2. Correspondingly, a plurality of guide sleeves 10 are fixedly arranged on the upper die holder 2 at positions corresponding to the guide columns 9. The guide columns 9 and the guide sleeves 10 have high cooperation precision, and the guide columns 9 can smoothly slide in the guide sleeves 10, thereby providing accurate guidance for the up-and-down movement of the upper die holder 2 during the punching process, and ensuring the stability and accuracy of the movement of the upper die holder 2.

[0044] Working principle: Place the upper module 4 or the lower module 5 on the corresponding upper die holder 2 or lower die holder 3, so that the dovetail groove 7 on the module is opposite to the clamping block 62 of the quick-mounting assembly 6. The operator rotates the adjusting wheel 6311 to drive the screw rod 631 to rotate. Since the two screw rods 631 rotate in opposite directions and synchronously, they drive the two clamping blocks 62 to slide towards each other in the sliding groove 611 of the guide plate 61 through the cooperation with the threads of the fine-adjusting cylinder 621. As the clamping blocks 62 approach, the slope 8 on the clamping blocks 62 gradually fits the dovetail groove 7 on the module, until the module is firmly clamped.

[0045] Fine adjustment of the position of the mold: If it is necessary to fine-adjust the position of the mold left and right after the mold is installed, the operator can first unscrew the bolt 622 on the clamping block 62 which cooperates with the positioning groove 6211 of the fine-adjusting cylinder 621. At this time, the fine-adjusting cylinder 621 is no longer limited by the bolt 622 and can be freely rotated. The operator rotates the fine-adjusting cylinder 621, and since the fine-adjusting cylinder 621 cooperates with the threads of the screw rod 631, the rotation of the fine-adjusting cylinder 621 will cause a slight displacement of the clamping block 62 in the sliding groove 611, thereby achieving accurate fine adjustment of the position of the module. After fine adjustment is completed, the bolt 622 is inserted into the appropriate positioning groove 6211 of the fine-adjusting cylinder 621 again to lock the positions of the fine-adjusting cylinder 621 and the clamping block 62.

[0046] Screw rod 631 adjustment and locking: when it is needed to make large adjustment to screw rod 631, such as loosening or further clamping the mold, the operator can first lift the positioning plate 6321 upward, overcome the elastic force of spring 6323, and make the positioning plate 6321 move along the sliding column 632 to the direction away from the positioning wheel 6312. At the same time, rotate the positioning plate 6321 around the sliding column 632, so that the positioning block 6324 on the positioning plate 6321 is disengaged from the positioning strip 63121 on the positioning wheel 6312. At this time, the adjusting wheel 6311 can be conveniently rotated to drive the screw rod 631 to rotate. After the adjustment is completed, the positioning plate 6321 is reset, and under the elastic force of spring 6323, the positioning block 6324 on the positioning plate 6321 is re-engaged with the positioning strip 63121 on the positioning wheel 6312 to lock the position of the screw rod 631, and ensure the stability of the quick-mounting assembly 6 during the stamping process.

[0047] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A die quick change structure of a terminal crimping machine comprising a press machine body (1), characterized by: The punch press body (1) is fixedly provided with an upper die seat (2) and a lower die seat (3), the upper die seat (2) is fixedly provided with an upper die block (4) through a quick-mounting assembly (6), and the lower die seat (3) is also fixedly provided with a lower die block (5) through the quick-mounting assembly (6); The quick-mounting assembly (6) comprises a guide plate (61), a sliding groove (611) is formed in the guide plate (61), and two clamping blocks (62) are slidably arranged in the sliding groove (611); End blocks (63) are fixedly arranged at the two ends of the guide plate (61), screw rods (631) are rotatably arranged on the end blocks (63), the rotation directions of the screw rods (631) on the two end blocks (63) are opposite, the two screw rods (631) are fixedly connected, and the two clamping blocks (62) are threadedly connected with the screw rods (631) with opposite rotation directions.

2. The die quick change structure of a terminal crimping machine according to claim 1, characterized by: The quick-mounting assembly (6) further comprises a fine-adjusting cylinder (621) rotatably arranged on the clamping block (62), the fine-adjusting cylinder (621) is threadedly connected with the screw rod (631), a plurality of positioning grooves (6211) are formed in the fine-adjusting cylinder (621), and a detachable bolt (622) is arranged on the clamping block (62) and connected with one of the positioning grooves (6211).

3. The die quick change structure of a terminal crimping machine according to claim 2, characterized by: The quick-mounting assembly (6) further comprises a positioning assembly, the positioning assembly comprises a positioning wheel (6312) fixedly arranged at one end of the screw rod (631), and a plurality of positioning strips (63121) are fixedly arranged on the positioning wheel (6312). A sliding column (632) is fixedly arranged on the end block (63), a positioning plate (6321) is fixedly arranged at one end of the sliding column (632), a sliding plate (6322) is slidably arranged on the sliding column (632), a spring (6323) is arranged between the positioning plate (6321) and the sliding plate (6322), and a positioning block (6324) is fixedly arranged on the positioning plate (6321) and connected with the positioning wheel (6312).

4. The die quick change structure of a terminal crimping machine according to claim 3, characterized by: An adjusting wheel (6311) is fixedly arranged on the screw rod (631) away from the positioning wheel (6312).

5. The die quick change structure of a terminal crimping machine according to claim 4, characterized by: A plurality of through holes (63111) are formed in the adjusting wheel (6311).

6. The mold quick change structure of a terminal crimping machine according to any one of claims 1 to 5, characterized by: A dovetail groove (7) is formed in the upper die block (4) and the lower die block (5), and an inclined surface (8) matched with the dovetail groove (7) is arranged on the clamping block (62).

7. The die quick change structure of a terminal crimping machine according to claim 1, characterized by: A plurality of guide columns (9) are fixedly arranged on the punch press body (1), a plurality of guide sleeves (10) are fixedly arranged on the upper die seat (2), and the guide columns (9) are matched with the guide sleeves (10).

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