Riveting die and riveting machine

Abstract

The present invention provides a riveting die and a riveting machine, which are used to rivet a wire into a tubular cavity of a tubular shell, and include an upper die and a lower die, wherein the upper die includes: a spring guide seat assembly with a mounting hole, a compression spring arranged in the mounting hole, an upper positioning block abutting against one end of the compression spring and capable of causing one end of the compression spring to contract toward the other end of the compression spring, an upper limit member for limiting the upper positioning block from moving in a direction away from the spring guide seat assembly, an upper riveting head, and a pressing block for detachably fixing the upper limit member and the upper riveting head on the spring guide seat assembly; the lower die includes: a base and a lower riveting head arranged on the base; wherein, in the process of the upper die approaching the lower die, the upper positioning block first contacts the tubular shell arranged on the lower riveting head, and then, in the process of the upper die continuing to approach the lower die, the upper riveting head contacts the tubular shell. The present invention can avoid the problems of uneven depth of riveting points and deformation of the tubular shell during the riveting process.

Description

Technical Field

[0001] The present invention relates to the field of riveting technology, and in particular to a riveting die and a riveting machine. Background Art

[0002] refer to Figure 1 , Figure 1 The figure is a schematic diagram of the structure after the tubular shell 110 and the wire 120 are riveted. It is an important part of the manufacturing process of electronic products, especially temperature sensors, to arrange the wire 120 in the lumen of the tubular shell 110 and to rivet the wire 120 and the tubular shell 110. In order to improve the efficiency and consistency of the wire and tubular shell riveted products, an automatic riveting machine capable of continuous stamping has been developed. However, this riveting machine is prone to uneven riveting point depth and deformation of the tubular shell during the riveting process. Therefore, it is necessary to improve the existing riveting machine to avoid the problems of uneven riveting point depth and deformation of the tubular shell during the riveting process. Summary of the invention

[0003] The object of the present invention is to provide a riveting die and a riveting machine to solve the problem that the existing riveting die and the riveting machine are prone to uneven riveting point depths and deformation of the tubular shell during the riveting process.

[0004] In order to solve the above technical problems, the present invention provides a riveting die for riveting a wire into a tubular cavity of a tubular shell, comprising an upper die and a lower die, wherein the upper die comprises: a spring guide seat assembly having a mounting hole, a compression spring arranged in the mounting hole, an upper positioning block abutting against one end of the compression spring and capable of causing one end of the compression spring to contract toward the other end of the compression spring, an upper limit member for limiting the upper positioning block from moving in a direction away from the spring guide seat assembly, an upper riveting head, and a pressing block for detachably fixing the upper limit member and the upper riveting head on the spring guide seat assembly; the lower die comprises: a base and a lower riveting head arranged on the base; wherein, in the process of the upper die approaching the lower die, the upper positioning block first contacts the tubular shell arranged on the lower riveting head, and then in the process of the upper die continuing to approach the lower die, the upper riveting head contacts the tubular shell.

[0005] Optionally, the upper limit member and the upper riveting head are integrally arranged.

[0006] Optionally, a first mounting groove is formed at one end of the upper positioning block away from the compression spring, and the upper rivet head has a U-shaped groove matching the first mounting groove, and the U-shaped groove is used to limit the movement of the first mounting groove in a direction away from the spring guide seat assembly. When the upper positioning block cannot move in a direction away from the spring guide seat assembly relative to the upper rivet head, the length of the upper positioning block away from the spring guide seat assembly is greater than the length of the upper rivet head away from the spring guide seat assembly.

[0007] Optionally, the pressure block includes a guide block with a first sliding groove arranged on the spring guide seat assembly, and a fixed block cooperated with the guide block for removably fixing the upper positioning member and the upper rivet head on the spring guide seat assembly, and the upper positioning block is slidably matched with the first sliding groove.

[0008] Optionally, the spring guide seat assembly includes an upper mold seat having a second mounting groove, a spring guide seat arranged in the second mounting groove, and the spring guide seat has a mounting hole.

[0009] Optionally, the spring guide seat assembly also includes a limit screw arranged in the mounting hole for limiting the position of the compression spring.

[0010] Optionally, the base includes a lower positioning block having one end abutting against the lower riveting head and having a third mounting groove for the other end of the lower riveting head to extend out, and a bottom plate for pressing the lower riveting head onto the lower positioning block.

[0011] Optionally, a lower limiting groove for limiting the swing of the tubular shell is formed on the lower positioning block.

[0012] Optionally, there are multiple lower limit grooves, and the lower riveting heads correspond to the lower limit grooves one by one.

[0013] The present invention also provides a riveting machine, comprising the riveting die mentioned above.

[0014] The present invention provides a riveting die and a riveting machine, which have the following beneficial effects:

[0015] By using a pressure block for detachably fixing the upper limit positioning member and the upper riveting head on the spring guide seat assembly, and an upper limit positioning member for limiting the upper positioning block from moving in a direction away from the spring guide seat assembly, the spring guide seat assembly, the compression spring, the upper limit positioning member, the upper riveting head and the pressure block can be detachably fixed together; because in the process of the upper die approaching the lower die, the upper positioning block first contacts the outer surface of the tubular shell provided on the lower riveting head, and the upper positioning block abuts against one end of the compression spring and can cause one end of the compression spring to shrink toward the other end of the compression spring, so in the upper positioning block In the process that the block contacts the outer surface of the tubular shell and the upper riveting head does not contact the tubular shell, the upper positioning block presses one end of the compression spring under the action of the outer surface of the tubular shell, and causes one end of the compression spring to shrink toward the other end of the compression spring. In this way, the rotation of the tubular shell relative to the upper positioning block can be limited by the interaction force between the upper positioning block and the outer surface of the tubular shell. Therefore, the tubular shell can be positioned in the process that the upper riveting head contacts the tubular shell, thereby avoiding the problems of uneven riveting point depth and deformation of the tubular shell during the riveting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure after the tubular shell and the conductor are riveted;

[0017] Figure 2 is an exploded schematic diagram of a riveting die in an embodiment of the present invention;

[0018] Figure 3 2 is a schematic structural diagram of a riveting die in an embodiment of the present invention;

[0019] Figure 4 Schematic diagram of the structure of the upper die of the riveting die in an embodiment of the present invention;

[0020] Figure 5 A schematic cross-sectional view of the upper die of the riveting die in an embodiment of the present invention;

[0021] Figure 6 Another schematic cross-sectional view of the upper die of the riveting die in the embodiment of the present invention;

[0022] Figure 7 Schematic diagram of the structure of the lower die of the riveting die in the embodiment of the present invention;

[0023] Figure 8 is a schematic cross-sectional structural diagram of a lower die of a riveting die in an embodiment of the present invention;

[0024] Fig. 9It is a cross-sectional structural schematic diagram of a tubular housing and a wire provided on the lower die of a riveting die in an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 110- tubular housing; 120- wire; 130- positioning piece;

[0027] 200-upper die; 210-spring guide seat assembly; 211-mounting hole; 212-upper die seat; 213-second mounting slot; 214-spring guide seat; 215-structural slot; 216-limiting screw; 220-compression spring; 230-upper positioning block; 231-first mounting slot; 232-arc slot; 240-upper riveting head; 241-U-shaped slot; 242-flange; 250-pressing block; 251-guide block; 252-first slide slot; 253-fixing block;

[0028] 300-lower die; 310-base; 311-lower positioning block; 312-lower limit groove; 313-positioning groove; 320-bottom plate; 330-lower riveting head. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the units of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 , Figure 2 1 is an exploded schematic diagram of a riveting die in an embodiment of the present invention. Figure 3 is a structural schematic diagram of a riveting die in an embodiment of the present invention, Figure 4 2 is a schematic structural diagram of an upper die 200 of a riveting die in an embodiment of the present invention. Figure 5 A schematic cross-sectional view of an upper die 200 of a riveting die in an embodiment of the present invention, Figure 6 Another cross-sectional structural schematic diagram of the upper die 200 of the riveting die in the embodiment of the present invention, Figure 7 3 is a schematic structural diagram of a lower die 300 of a riveting die in an embodiment of the present invention. Figure 8 is a schematic cross-sectional structural diagram of a lower die 300 of a riveting die in an embodiment of the present invention, Fig. 91 is a cross-sectional structural schematic diagram of a tubular housing 110 and a conductor 120 arranged on a lower die 300 of a riveting die in an embodiment of the present invention. The present embodiment provides a riveting die for riveting the conductor 120 into a tubular cavity of the tubular housing 110, comprising an upper die 200 and a lower die 300, wherein the upper die 200 comprises: a spring guide seat assembly 210 having a mounting hole 211, a compression spring 220 arranged in the mounting hole 211, an upper positioning block 230 abutting against one end of the compression spring 220 and enabling one end of the compression spring 220 to contract toward the other end of the compression spring 220, and for limiting the upper positioning block 230 from moving away from the spring An upper limit positioning member that moves in the direction of the spring guide seat assembly 210, an upper riveting head 240, and a pressure block 250 for detachably fixing the upper limit positioning member and the upper riveting head 240 on the spring guide seat assembly 210; the lower die 300 includes: a base 310 and a lower riveting head 330 arranged on the base 310; wherein, in the process of the upper die 200 approaching the lower die 300, the upper positioning block 230 first contacts with the tubular shell 110 arranged on the lower riveting head 330, and then in the process of the upper die 200 continuing to approach the lower die 300, the upper riveting head 240 contacts with the tubular shell 110.

[0036] By means of a pressing block 250 for detachably fixing the upper limit positioning member and the upper riveting head 240 on the spring guide seat assembly 210, and an upper limit positioning member for limiting the upper positioning block 230 from moving in a direction away from the spring guide seat assembly 210, the spring guide seat assembly 210, the compression spring 220, the upper limit positioning member, the upper riveting head 240 and the pressing block 250 can be detachably fixed together; as the upper die 200 approaches the lower die 300, the upper positioning block 230 first contacts the tubular housing 110 provided on the lower riveting head 330, and the upper positioning block 230 abuts against one end of the compression spring 220 and can cause one end of the compression spring 220 to shrink toward the other end of the compression spring 220, so that when the upper positioning block 2 30 is in contact with the outer surface of the tubular shell 110 and the upper riveting head 240 is not in contact with the tubular shell 110, the upper positioning block 230 is acted upon by the outer surface of the tubular shell 110 so that the upper positioning block 230 presses one end of the compression spring 220 and causes one end of the compression spring 220 to shrink toward the other end of the compression spring 220. In this way, the rotation of the tubular shell 110 relative to the upper positioning block 230 can be limited by the interaction force between the upper positioning block 230 and the outer surface of the tubular shell 110. Therefore, the tubular shell 110 can be positioned during the contact between the upper riveting head 240 and the tubular shell 110, thereby avoiding the problems of uneven riveting point depth and deformation of the tubular shell 110 during the riveting process.

[0037] refer to Figure 2 , Figure 5 and Figure 6 The upper limit member and the upper riveting head 240 are integrally arranged. In this way, the structure of the upper die 200 can be simplified and the cost of the riveting die can be reduced.

[0038] Specifically, a first mounting groove 231 is formed at one end of the upper positioning block 230 away from the compression spring 220, and the upper riveting head 240 has a U-shaped groove 241 matched with the first mounting groove 231, and the U-shaped groove 241 is used to limit the first mounting groove 231 from moving in a direction away from the spring guide seat assembly 210. When the upper positioning block 230 cannot move in a direction away from the spring guide seat assembly 210 relative to the upper riveting head 240, the length of the upper positioning block 230 away from the spring guide seat assembly 210 is greater than the length of the upper riveting head 240 away from the spring guide seat assembly 210. In this way, when the upper mold 200 approaches the lower mold 300, the upper positioning block 230 first contacts the tubular shell 110.

[0039] refer to Figure 2 , Figure 5 and Figure 6 The pressing block 250 includes a guide block 251 having a first slide groove 252 disposed on the spring guide seat assembly 210, and a fixing block 253 matched with the guide block 251 for detachably fixing the upper limit member and the upper riveting head 240 on the spring guide seat assembly 210, and the upper positioning block 230 is slidably matched with the first slide groove 252. The guide block 251 can improve the sliding accuracy of the upper positioning block 230 relative to the spring guide seat assembly 210, thereby improving the accuracy, stability and service life of the riveting die.

[0040] Specifically, the upper riveting head 240 has a flange 242 , and the fixing block 253 is provided with a limiting groove for limiting the movement of the flange 242 .

[0041] refer to Figure 2 The upper positioning block 230 has an arc groove 232 at one end away from the compression spring 220, so that the upper positioning block 230 can contact the outer surface of the tubular shell 110 and prevent the upper positioning block 230 from deforming the tubular shell 110.

[0042] refer to Figure 2 The spring guide seat assembly 210 includes an upper mold seat 212 having a second mounting groove 213 and a spring guide seat 214 disposed in the second mounting groove 213 , and the spring guide seat 214 has a mounting hole 211 .

[0043] refer to Figure 5 The spring guide seat assembly 210 further includes a limit screw 216 disposed in the mounting hole 211 for limiting the position of the compression spring 220. In this way, the position of the compression spring 220 in the mounting hole 211 can be adjusted by the limit screw 216.

[0044] refer to Figure 5 and Figure 6 The spring guide seat 214 has a structural groove 215 for the upper positioning block 230 to move toward the spring guide seat 214. For example, the structural hole can be a square through groove. In this way, the structure of the spring guide seat 214 can be simplified and the cost of the riveting die can be reduced.

[0045] refer to Figure 2 , Figure 7 , Figure 8 and Fig. 9 The base 310 includes a lower positioning block 311 having one end abutting against the lower riveting head 330 and having a third mounting groove for the other end of the lower riveting head 330 to extend out, and a bottom plate 320 for pressing the lower riveting head 330 onto the lower positioning block 311.

[0046] refer to Figure 2 , Figure 7 , Figure 8 and Fig. 9 The lower positioning block 311 is provided with a lower limiting groove 312 for limiting the swing of the tubular housing 110. In this way, the problem of uneven depth of the riveting points and deformation of the tubular housing 110 during the riveting process can be avoided.

[0047] refer to Figure 2 , Figure 7 , Figure 8 and Fig. 9 There are multiple lower limit grooves 312 , and the lower riveting heads 330 correspond to the lower limit grooves 312 one by one.

[0048] refer to Fig. 9 The tubular shell 110 also includes a positioning piece 130, and the lower positioning block 311 is provided with a positioning groove 313 that cooperates with the positioning piece 130. The positioning groove 313 and the positioning piece 130 cooperate to limit the axial movement of the tubular shell 110 relative to the lower riveting head 330. In this way, the problem of uneven riveting point depth and deformation of the tubular shell 110 during the riveting process can be avoided.

[0049] The working process of the riveting die is as follows:

[0050] First, the tubular housing 110 is placed in the lower limiting groove 312 of the lower positioning block 311 and supported by the lower riveting head, wherein the lower die 300 is fixed.

[0051] Then, the upper die 200 moves toward the lower die 300 under the action of the external driving force, and approaches the lower die 300. When the upper positioning block 230 approaches the tubular housing 110, the arc groove 232 on the upper positioning block 230 first fixes the tubular housing 110 to prevent the tubular housing 110 from deflecting, and the upper riveting head 240 does not contact the outer surface of the tubular housing 110. Under the continued action of the external driving force, the upper die 200 continues to move downward, and the upper positioning block 230 begins to compress the compression spring 220 and moves upward relative to the spring guide seat 214. Under the action of the spring elastic force, the upper positioning block 230 further fixes the outer surface of the tubular housing 110. When the upper positioning block 230 compresses the compression spring 220 to the limit position, the upper positioning block 230 can no longer move upward further, and the upper riveting head 240 begins to contact the outer surface of the tubular housing 110. Under the action of the external driving force, the upper riveting head 240 and the lower riveting head 330 simultaneously press the outer surface of the tubular shell 110 to complete the riveting of the tubular shell 110 .

[0052] Then, after the upper riveting head 240 and the lower riveting head 330 are completely in place, the external driving force drives the upper die 200 to move upward, the upper riveting head 240 and the lower riveting head 330 are separated, the riveting is completed, and the upper positioning block 230 moves away from the spring guide seat 214 under the action of the spring and resets. After the riveting is completed, the lower die 300 moves a certain distance and starts the next riveting cycle.

[0053] This embodiment also provides a riveting machine, including the riveting die in the above embodiment.

[0054] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A riveting die for riveting a conductor into a lumen of a tubular housing, characterized in that: Including upper die and lower die, The upper die comprises: a spring guide seat assembly having a mounting hole, a compression spring arranged in the mounting hole, an upper positioning block abutting against one end of the compression spring and capable of causing one end of the compression spring to contract toward the other end of the compression spring, an upper limit stopper for limiting the upper positioning block from moving in a direction away from the spring guide seat assembly, an upper riveting head, and a pressing block for detachably fixing the upper limit stopper and the upper riveting head on the spring guide seat assembly; The lower die comprises: a base and a lower riveting head arranged on the base; Wherein, in the process of the upper die approaching the lower die, the upper positioning block first contacts the tubular shell provided on the lower riveting head, and then in the process of the upper die continuing to approach the lower die, the upper riveting head contacts the tubular shell; The upper limit member and the upper riveting head are integrally arranged; A first mounting groove is formed at one end of the upper positioning block away from the compression spring, and the upper riveting head has a U-shaped groove matching the first mounting groove, and the U-shaped groove is used to limit the first mounting groove from moving in a direction away from the spring guide seat assembly. When the upper positioning block cannot move in a direction away from the spring guide seat assembly relative to the upper riveting head, the length of the upper positioning block away from the spring guide seat assembly is greater than the length of the upper riveting head away from the spring guide seat assembly.

2. The riveting die according to claim 1, characterized in that: The pressure block includes a guide block with a first slide groove arranged on the spring guide seat assembly, and a fixing block matched with the guide block for detachably fixing the upper positioning member and the upper riveting head on the spring guide seat assembly, and the upper positioning block is slidably matched with the first slide groove.

3. The riveting die according to claim 1, characterized in that: The spring guide seat assembly comprises an upper die seat having a second mounting groove, a spring guide seat arranged in the second mounting groove, and the spring guide seat has a mounting hole.

4. The riveting die according to claim 3, characterized in that: The spring guide seat assembly also includes a limit screw arranged in the mounting hole for limiting the position of the compression spring.

5. The riveting die according to claim 1, characterized in that: The base comprises a lower positioning block with one end abutting against the lower riveting head and having a third mounting groove for the other end of the lower riveting head to extend out, and a bottom plate for pressing the lower riveting head onto the lower positioning block.

6. The riveting die according to claim 5, characterized in that: The lower positioning block is provided with a lower limiting groove for limiting the swing of the tubular housing.

7. The riveting die according to claim 6, characterized in that: There are multiple lower limit grooves, and the lower riveting heads correspond to the lower limit grooves one by one.

8. A riveting press, characterized in that: It comprises the riveting die as described in any one of claims 1 to 7.

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