Pre-guiding mechanism and stamping die assembly with same

Abstract

The utility model provides a pre-guiding mechanism and a stamping die assembly with the same. The pre-guiding mechanism comprises a limiting piece, a pre-guiding rod and a movable clamping piece. The limiting piece is used for being fixed to a lower die assembly, and a matching hole channel is formed in the limiting piece in the vertical direction. The pre-guide rod is arranged in the matching hole channel in a penetrating manner in a manner of moving up and down, and is used for being matched with a matching hole formed in an upper die assembly; the pre-guide rod is provided with a lower bayonet; and the movable clamping piece can be close to or far away from the pre-guide rod under the action of external force, so that part of the movable clamping piece enters or retreats from the lower bayonet, and the movable clamping piece is clamped with or unclamped from the pre-guide rod in the vertical direction. Through simple arrangement, the pre-guiding mechanism can ensure that when the stamping die assembly is repaired or maintained, the probability that related parts of the lower die assembly are damaged due to shaking of the upper die assembly is greatly reduced.

Description

Technical Field

[0001] The utility model specifically relates to a pre-guide mechanism and a stamping die assembly having the pre-guide mechanism. Background Art

[0002] During the normal production process of the stamping die, the upper die assembly of the stamping die can smoothly complete the opening and closing of the die with the help of the press, and no unacceptable shaking will occur. However, when the stamping die needs to be repaired and / or maintained, the upper die assembly is usually no longer able to complete the opening and closing of the die with the help of the press; at this time, the workers will use a crane to move the upper die assembly; in this way, when performing the opening and closing of the die, the upper die assembly is prone to unacceptable large-scale shaking, which in turn causes the related parts set on the lower die assembly (such as the positioning parts for positioning the sheet to be stamped) to collide with the upper die assembly, causing the related parts on the lower die assembly to be damaged. Utility Model Content

[0003] The utility model aims to provide a pre-guide mechanism and a stamping die assembly having the pre-guide mechanism.

[0004] The pre-guide mechanism provided by the utility model includes a limit piece, a pre-guide rod, and a movable clamping piece; the limit piece is used to be fixed on the lower mold assembly, and is provided with a matching channel arranged along the up-down direction; the pre-guide rod can be movably arranged in the matching channel up and down, and is used to cooperate with the matching hole arranged on the upper mold assembly; the pre-guide rod is provided with a lower clamping mouth; the movable clamping piece can approach or move away from the pre-guide rod under the action of external force, so that part of itself enters or exits the lower clamping mouth, and is clamped or released from the pre-guide rod in the up-down direction.

[0005] Optionally, the limit member is provided with an installation channel extending in a direction perpendicular to the up and down direction, and the installation channel is used for a fixing part to pass through the limit member, and the fixing part is used to fix the limit member on the lower mold assembly; in the up and down directions, part of the pre-guide rod is located in the matching channel, and the length of this part of the pre-guide rod is at least 10% of the total length of the pre-guide rod.

[0006] Optionally, an upper snap-in is provided on the pre-guide rod on the upper side of the lower snap-in, and the upper snap-in can form a snap-in relationship with the movable clamp in the up and down directions; the pre-guide rod is used to fix itself at different heights by snapping either the upper snap-in or the lower snap-in with the movable clamp.

[0007] Optionally, the pre-guide mechanism also includes a fixing part and an elastic part; the movable clamping part and the fixing part are located on the sides of the limiting part, and the fixing part is used to be fixed on the lower mold assembly; the elastic part is located between the movable clamping part and the fixing part, and is in contact with the movable clamping part and the fixing part at its two ends respectively; the elastic part is used to elastically deform when the movable clamping part moves away from the pre-guide rod, so as to provide the movable clamping part with a force to make the movable clamping part move in the opposite direction.

[0008] Optionally, the movable clamp is provided with a matching portion, the fixed member is provided with a passage penetrating therethrough, and the matching portion can be movably penetrated in the passage; the movable clamp is partially located on a side of the fixed member close to the pre-guide rod, and partially located on a side of the fixed member away from the pre-guide rod;

[0009] A blind hole is provided on the fixing member at the side of the passage, one end of the elastic member penetrates into the blind hole and contacts the bottom wall of the blind hole, and the other end of the elastic member contacts the movable clamping member located on the side of the fixing member close to the pre-guide rod; the movable clamping member located on the side of the fixing member close to the pre-guide rod is configured to be able to engage with the upper clamping member or the lower clamping member.

[0010] Optionally, the passage has a shape that passes through the fixing piece; the movable clamp is partially located on a side of the passage close to the pre-guide rod, and partially located on a side of the passage away from the pre-guide rod; the mating portion is a groove formed by a downward depression from a portion of the upper surface of the movable clamp.

[0011] Optionally, the fixing member includes a surface contact wall, which is located on the side of the movable clamping member away from the pre-guide rod; the elastic member is located between the surface contact wall and the movable clamping member, and is in contact with the surface contact wall and the movable clamping member at its two ends respectively.

[0012] Optionally, the fixing member also includes two side walls integrally connected to the contact wall, the two side walls are respectively located on two opposite sides of the movable clamping member, and together with the contact wall form a U-shaped body with an opening facing the pre-guide rod; the two side walls form a sliding groove structure slidably connected to the movable clamping member; the elastic member is located between the two side walls.

[0013] Optionally, a skirt portion is formed extending from the side wall toward the side of the side wall away from the elastic member, and the skirt portion is used to be fixedly connected to the lower mold assembly.

[0014] The utility model also provides a stamping die assembly, comprising the pre-guiding mechanism as described in any one of the above items, and also comprising an upper die assembly and a lower die assembly; a positioning member for positioning a sheet material is fixed on the lower die assembly; the pre-guiding mechanism is configured such that when the movable clamp is engaged with the lower clamp, the height of the highest surface of the pre-guiding rod is higher than the positioning member;

[0015] The fitting clearance between the upper die assembly and the positioning member is greater than the fitting clearance between the pre-guide rod and the fitting hole.

[0016] In summary, the utility model provides a pre-guiding mechanism, which, through simple setting, can ensure that when the stamping die assembly is repaired or maintained, the probability of damage to the related parts of the lower die assembly due to the shaking of the upper die assembly is greatly reduced.

[0017] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the stamping die assembly in the first embodiment of the utility model (the pre-guide mechanism is in the guide column raised state).

[0019] Figure 2 It is a schematic diagram of the partial structure of the stamping die assembly in the first embodiment of the utility model.

[0020] Figure 3 It is a schematic diagram of the lower mold assembly in the first embodiment of the utility model (the pre-guide mechanism is in the guide column lowered state).

[0021] Figure 4 It is a schematic diagram of the pre-guiding mechanism in the first embodiment of the utility model (the pre-guiding mechanism is in the guide column lowered state).

[0022] Figure 5 It is an exploded view of the pre-guiding mechanism in the first embodiment of the utility model.

[0023] Figure 6 It is a schematic diagram of the assembled fixing member and the elastic member in the first embodiment of the utility model.

[0024] Figure 7 It is a schematic diagram of the assembled fixing member, movable clamping member and elastic member in the first embodiment of the utility model.

[0025] Figure 8 It is a schematic diagram of the pre-guiding mechanism in the second embodiment of the present utility model.

[0026] Fig. 9 It is a schematic diagram of the relative position relationship between the skirt portion and the side wall in the second embodiment of the present invention.

[0027] Description of Reference Numerals

[0028] 1-upper mold assembly, 11-matching hole, 2-lower mold assembly, 3-positioning piece, 4-limiting piece, 41-matching channel, 42-installation channel, 5-pre-guide rod, 51-lower bayonet, 52-upper bayonet, 6-movable clamp, 61-matching place, 7-fixing piece, 71-travel channel, 72-contact wall, 73-side wall, 74-skirt, 8-elastic piece, 9-handle. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present utility model are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0031] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connected" and the like 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 an indirect connection through an intermediate medium. In some cases, when expressing that something is fixedly connected to something else, the specific connection method may also include an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0032] The terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" in the present invention indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0033] The terms “comprises”, “includes” or any other variations thereof in the present invention are intended to cover a non-exclusive inclusion, which includes not only the listed elements but also other elements not explicitly listed.

[0034] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "exemplarily", "specific example", "further", "optionally", "more detailed description", "preferably", "also provided with", "also including" or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0035] It should be noted that in the description of the present application, the orientation or positional relationship indicated by the term "end" etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the referred component must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] Embodiment 1

[0037] like Figures 1 to 3 As shown, this embodiment provides a stamping die assembly, including an upper die assembly 1, a lower die assembly 2 and a pre-guiding mechanism, wherein a positioning member 3 for positioning a sheet to be stamped is fixed on the lower die assembly 2. Figure 2 and Figure 4 As shown, the pre-guide mechanism of this embodiment includes a limit member 4, a pre-guide rod 5, and a movable clamping member 6; wherein, the limit member 4 is fixed on the lower mold assembly 2, and is provided with a matching channel 41 arranged along the up-down direction, the pre-guide rod 5 can be moved up and down in the matching channel 41, and is used to penetrate into the matching hole 11 arranged on the upper mold assembly 1; a lower clamping port 51 is provided on the pre-guide rod 5; the movable clamping member 6 can approach or move away from the pre-guide rod 5 under the action of external force, so that part of itself enters or exits the lower clamping port 51, and is clamped or released from the pre-guide rod 5 in the up-down direction.

[0038] Based on the above design scheme, it can be known that by making the pre-guide rod 5 slidably connected to the limit member 4, and the movable clamp 6 able to clamp and release the clamp with the pre-guide rod 5 in the up and down directions, the technical personnel in this field only need to adjust the height of the pre-guide rod 5 as needed to ensure that during repair or maintenance, the upper mold assembly 1 will first cooperate with the pre-guide rod 5 before cooperating with the relevant parts of the lower mold assembly 2, and then basically align with the lower mold assembly 2; it can be understood that after the upper mold assembly 1 completes the basic alignment with the lower mold assembly 2, during the process of opening and closing the mold, the upper mold assembly 1 will not have an unacceptable large shaking, and the probability of damage to the relevant parts of the lower mold assembly 2 due to the shaking of the upper mold assembly 1 will also be greatly reduced.

[0039] Furthermore, based on the above design, the technicians in this field only need to predetermine the sizes of the pre-guide rod 5 and the matching hole 11 to ensure that after the matching hole 11 of the upper mold assembly 1 is mounted on the pre-guide rod 5, if the upper mold assembly 1 shakes, the upper mold assembly 1 will first contact the pre-guide rod 5, so that the pre-guide rod 5 will first bear the impact force caused by the shaking of the upper mold assembly 1, thereby further reducing the probability of damage to the related parts of the lower mold assembly 2.

[0040] For the above stamping die assembly, the following is a more detailed exemplary setting:

[0041] In this embodiment, when the movable clamping member 6 is clamped with the lower clamping port 51 , the highest surface of the pre-guide rod 5 is located at a height higher than the relevant components of the lower mold assembly 2 (such as the aforementioned positioning member 3 ).

[0042] Please continue reading Figure 2 and Figure 4 , to ensure that after the matching hole 11 of the upper mold assembly 1 is sleeved on the pre-guide rod 5, if the upper mold assembly 1 shakes, the upper mold assembly 1 will first contact the pre-guide rod 5; illustratively, the matching clearance between the upper mold assembly 1 and the relevant parts of the lower mold assembly 2, such as the positioning member 3, is greater than the matching clearance between the pre-guide rod 5 and the matching hole 11. In a possible implementation, the matching clearance between the upper mold assembly 1 and the positioning member 3 is 5mm, and the matching clearance between the matching hole 11 and the pre-guide rod 5 is 2mm.

[0043] In addition, it should be noted that since the pre-guide rod 5 only needs to be clearance-matched with the upper mold assembly 1, it is preferred that Figure 2 As shown, the matching hole 11 should be set through the edge of the upper mold assembly 1, and the pre-guide mechanism should also be set at the edge of the lower mold assembly 2, so as to reduce the opening cost of the two without excessively changing and affecting the stamping die assembly structure.

[0044] Please continue reading Figure 2 and Figure 4In this embodiment, two pre-guide mechanisms are exemplarily provided on the lower mold assembly 2, and the two pre-guide mechanisms are arranged diagonally, one of the two pre-guide mechanisms is arranged at the left front part of the lower mold assembly 2, and the other one is arranged at the right rear part of the lower mold assembly 2 (not shown in the figure). It can be understood that the specific number and position of the pre-guide mechanisms are flexible settings for those skilled in the art.

[0045] Please continue reading Figure 2 and Figure 4 , since the upper die assembly 1 is driven by the press to perform high-precision reciprocating motion during the formal production process, it is not difficult to understand that the pre-guide mechanism is not required to achieve the alignment of the upper die assembly 1 during formal production. Based on this, and since the pre-guide rod 5 can move up and down relative to the limiter 4, the pre-guide mechanism of this embodiment is configured to have a pre-guide rod raised state and a pre-guide rod lowered state; during the repair or maintenance of the stamping die assembly, if the die opening and closing action is required, Figure 2 As shown in FIG. 1 , the pre-guide mechanism is in a state where the pre-guide rod is raised so as to guide the upper die assembly 1; after completing the repair or maintenance, the pre-guide mechanism is adjusted to Figure 3 The lowered state of the pre-guide rod shown can ensure that the pre-guide rod 5 is always located below the matching hole 11 during the mold opening and closing process of formal production, that is, it is no longer in contact with the upper mold assembly 1.

[0046] As mentioned above, in the process of the stamping die assembly of this embodiment of the formal production, when the sheet to be stamped is stamped, a manipulator will extend between the upper and lower die assemblies to grab the formed sheet. Based on this, when the pre-guide mechanism is in the state where the pre-guide rod is lowered, the pre-guide rod 5 is also exemplarily configured to be located outside the movement path of the manipulator to avoid hindering the work of the manipulator.

[0047] Please continue reading Figure 4 and Figure 5 , on the pre-guide rod 5, an upper bayonet 52 is exemplarily provided on the upper side of the lower bayonet 51; exemplarily, both the upper bayonet 52 and the lower bayonet 51 are arc-shaped grooves arranged along the outer surface of the pre-guide rod 5. Similar to the lower bayonet 51, the upper bayonet 52 can form a snap-fitting relationship with the movable clamp 6 in the up and down directions, so that the pre-guide rod 5 can be snapped with the movable clamp 6 by either the upper bayonet 52 or the lower bayonet 51, so as to fix itself at different heights, thereby completing the switching of the pre-guide mechanism between the pre-guide rod raised state and the pre-guide rod lowered state. For example, when the upper bayonet 52 is snapped with the movable clamp 6, as Figure 3 As shown, the pre-guide mechanism is in the state where the pre-guide rod is lowered; after releasing the engagement between the upper bayonet 52 and the movable clamp 6, the lower bayonet 51 is engaged with the movable clamp 6, as shown in FIG. Figure 2 As shown, the pre-guide mechanism is in a state where the pre-guide rod is raised.

[0048] Based on the above, in order to ensure the durability of the pre-guide rod 5, no matter whether the pre-guide mechanism is in the pre-guide rod raised state or in the pre-guide rod lowered state, the pre-guide rod 5 is configured to always have a portion in the matching channel 41 of the limiter; and, in the up and down directions, the length of this portion of the pre-guide rod 5 is illustratively at least 10% of the total length of the pre-guide rod 5; on a deeper level, by ensuring that a portion of the pre-guide rod 5 is always in the matching channel 41 of the limiter, when the upper mold assembly 1 shakes, the pre-guide rod 5 is equivalent to having a larger surface area that can transmit force to the limiter 4; such a design can ensure that the pre-guide rod 5 will not undergo an unacceptable positional displacement when impacted by the upper mold assembly 1, and will not be easily damaged by the impact force.

[0049] Based on the above, in order to further ensure the durability of the pre-guide rod 5, as Figure 3 and Figure 4 As shown, the limit member 4 used for clearance fit with the pre-guide rod 5 is exemplarily provided with an installation channel 42 that penetrates the limit member 4 along the left-right direction; after the limit member 4 and the lower mold assembly 2 are assembled, fixing parts such as bolts are inserted into the installation channel 42 and the lower mold assembly 2, so that the limit member 4 is fixed to the lower mold assembly 2 by a force perpendicular to the up and down directions.

[0050] As mentioned above, the design of the installation channel 42 being perpendicular to the up and down direction can ensure the durability of the pre-guide rod 5. The principle is that after the upper mold assembly 1 is matched with the pre-guide rod 5, the force generated by the shaking of the upper mold assembly 1 will be transmitted to the limit member 4, so that the driving direction of fixing parts such as bolts is perpendicular to the up and down direction, which can ensure that the fixing parts are not easily damaged and the pre-guide rod 5 is not easily invalid; on the contrary, if the bolts are driven in the up and down direction to fix the limit member 4 on the lower mold assembly 2, the threaded connection between the limit member 4 and the lower mold assembly 2 will become a weak connection between the pre-guide mechanism and the lower mold assembly 2, making it easy for the limit member 4 to loosen due to the force after the upper mold assembly 1 shakes, causing the pre-guide rod 5 to fail.

[0051] Please continue reading Figure 4 and Figure 5 As mentioned above, the movable clamping member 6 of this embodiment "can approach or move away from the pre-guide rod 5 under the action of external force... and be engaged or disengaged with the pre-guide rod 5 in the vertical direction". To realize this design, illustratively, the pre-guide rod 5 is a cylinder, and the pre-guide mechanism further includes a fixing member 7 fixed to the lower mold assembly 2, and the fixing member 7 is fixed to the side of the pre-guide rod 5 by bolt connection, and is a special-shaped member whose length direction is in the left-right direction; Figure 5 and Figure 6As shown, the fixing member 7 is located on the upper side of the limiting member 4, and a passage 71 is provided on it. The passage 71 has an opening facing downward and penetrates the fixing member 7 along the front-to-back direction; correspondingly, the movable clamping member 6 is also located on the upper side of the limiting member 4, and the movable clamping member 6 is a rectangular parallelepiped whose length direction is the front-to-back direction, and a fitting portion 61 is provided on the movable clamping member 6. The fitting portion 61 is a groove formed by a downward depression of part of the upper surface of the movable clamping member 6. The existence of the fitting portion 61 makes the movable clamping member 6 form a right-angled U-shaped posture with an opening facing upward.

[0052] In this embodiment, the travel channel 71 and the mating portion 61 are loosely matched to form a slider-slide groove type of matching; after the travel channel 71 and the mating portion 61 are matched, the movable clamping component 6 is slidably connected to the fixed component 7, and in the front-to-back direction, part of the movable clamping component 6 is located on the side of the fixed component 7 (or the travel channel 71) close to the pre-guide rod 5, and part of the movable clamping component 6 is located on the side of the fixed component 7 (or the travel channel 71) away from the pre-guide rod 5, so that the movable clamping component 6 can move along the front-to-back direction relative to the fixed component 7 under the action of external force, approaching or moving away from the pre-guide rod 5, and being engaged or disengaged with the pre-guide rod 5.

[0053] Please continue reading Figure 5 and Figure 6 , the pre-guiding mechanism further exemplarily includes an elastic member 8, which is located on the upper side of the limiting member 4, between the movable clamping member 6 and the fixing member 7, and contacts the movable clamping member 6 and the fixing member 7 at its front and rear ends respectively; the elastic member 8 is used to elastically deform when the movable clamping member 6 is away from the pre-guiding rod 5, so as to provide the movable clamping member 6 with a force to reset the movable clamping member 6. Exemplarily, a blind hole is provided on the fixing member 7 on the upper side of the passage 71; Figure 6 and Figure 7 As shown, one end of the elastic member 8 penetrates into the blind hole and contacts the bottom wall of the blind hole, and the other end of the elastic member 8 contacts the movable clamping member 6 located on the side of the fixing member 7 close to the pre-guide rod 5, and the "movable clamping member 6 located on the side of the fixing member 7 close to the pre-guide rod 5" is configured to be able to extend into the upper clamping port 52 and the lower clamping port 51, and form a clamping connection with the upper clamping port 52 or the lower clamping port 51 in the up and down directions. In addition, the parts of the aforementioned movable clamping member 6 located on the two opposite sides of the fixing member 7 have parts located on the upper side of the passage 71; it can be understood that the parts of these two parts of the movable clamping member 6 (located on the upper side of the passage 71) can cooperate to limit the forward and backward movement of the movable clamping member 6.

[0054] It can also be understood that the aforementioned “contact” relationship between the elastic member 8 and the fixing member 7 or the movable clamping member 6 can be a non-rigidly connected abutting relationship, or a fixed connection relationship such as welding or bonding.

[0055] In this embodiment, when the movable clamp 6 is engaged with the upper clamp 52 or the lower clamp 51, the worker pinches the part of the fitting part 61 located on the side of the fixing part 7 away from the pre-guide rod 5 to move the movable clamp 6 away from the pre-guide rod 5, so that the movable clamp 6 can be withdrawn from the upper clamp 52 or the lower clamp 51, and the engagement with the pre-guide rod 5 is released. The pre-guide rod 5 can move up and down relative to the limit member 4 to adjust its own height. At the same time, the elastic member 8 is compressed to store elastic potential energy; after the pre-guide rod 5 has adjusted its height, the worker removes the force applied to the movable clamp 6, and the movable clamp 6 immediately moves in the opposite direction under the action of the elastic force; at this time, if the upper clamp 52 or the lower clamp 51 of the pre-guide rod 5 is aligned with the movable clamp 6, the pre-guide rod 5 will be re-engaged with the movable clamp 6. Therefore, by combining the action of pulling or releasing the movable clamp 6 and the action of adjusting the height of the pre-guide rod 5, the worker can switch the pre-guide mechanism between the pre-guide rod raised state and the pre-guide rod lowered state according to needs through simple operations.

[0056] In addition, it can be understood that, under the premise that the movable clamping member 6 and the fixed member 7 are slidably connected, the elastic member 8 is not a necessary component of the pre-guide mechanism, and the reset force provided by the elastic member 8 for the movable clamping member 6 can also be directly provided manually.

[0057] Please refer back to Figure 4 and Figure 5 In order to facilitate the workers to apply force to the movable clamp 6, a handle 9 is exemplarily fixedly provided on the movable clamp 6 at the side of the fixing member 7 away from the pre-guide rod 5. The handle 9 is specifically a bolt fixed on the movable clamp 6. It can be understood that in possible embodiments, the specific form of the handle 9 is a flexibly settable item.

[0058] Please refer back to Figure 2 In a possible embodiment, in order to facilitate workers to adjust the height of the pre-guide rod 5, a small piece of soft leather (not shown) can be pasted on the upper surface of the pre-guide rod 5; specifically, the leather is formed into a U-shape on the upper surface of the pre-guide rod 5 with the opening facing the pre-guide rod 5, and is bonded to the upper surface of the pre-guide rod 5, so as to provide a force point for the worker to lift the pre-guide rod 5.

[0059] Embodiment 2

[0060] This embodiment also provides a stamping die assembly; the stamping die assembly provided in this embodiment is basically as described in the first embodiment. Figure 8As shown, the fixing member 7 of this embodiment includes a surface contact wall 72, and the surface contact wall 72 is located on the side of the movable clamping member 6 away from the pre-guide rod 5; and the elastic member 8 is located between the surface contact wall 72 and the movable clamping member 6, and the two ends thereof are respectively in contact with the surface contact wall 72 and the movable clamping member 6. It can be understood that in this way, the effect of the pre-guide mechanism that "the movable clamping member 6 can approach or move away from the pre-guide rod 5 under the action of an external force... and be engaged or disengaged with the pre-guide rod 5 in the vertical direction" can also be achieved.

[0061] Exemplarily, the fixing member 7 further includes two side walls 73 connected to the contact wall 72, the two side walls 73 are respectively located at two opposite sides of the movable clamping member 6, and together with the contact wall 72, form a U-shaped body with an opening facing the pre-guide rod 5; the two side walls 73 are equivalent to forming a slide groove structure slidably connected to the movable clamping member 6; the elastic member 8 is located between the two side walls 73. In this way, although the fixing member 7 of this embodiment has a different morphology from the fixing member 7 in the first embodiment, it still forms a slidable connection with the movable clamping member 6.

[0062] Please from Figure 8 Observe the fixing member 7 in the direction of the middle arrow. To ensure that the fixing member 7 can be stably arranged on the lower mold assembly 2, in a possible embodiment, as shown in FIG. Fig. 9 As shown, a skirt portion 74 may be extended from the side wall 73 toward the side of the side wall 73 away from the elastic member 8, and the skirt portion 74 is used for fixed connection with the lower mold assembly 2 (for example, bolt connection or bonding).

[0063] In summary, the utility model provides a pre-guiding mechanism, which can ensure that the probability of damage to related parts of the lower die assembly 2 due to shaking of the upper die assembly 1 during repair or maintenance of the stamping die assembly is greatly reduced through simple setting.

[0064] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A pre-guiding mechanism, characterized in that: The invention comprises a limit member (4), a pre-guide rod (5), and a movable clamping member (6); the limit member (4) is used to be fixed on the lower mold assembly (2), and is provided with a matching channel (41) arranged in the up-down direction; the pre-guide rod (5) is arranged in the matching channel (41) so as to be movable up-down, and is used to match with a matching hole (11) arranged on the upper mold assembly (1); the pre-guide rod (5) is provided with a lower clamping member (51); the movable clamping member (6) can approach or move away from the pre-guide rod (5) under the action of an external force, so that a part of itself enters or exits the lower clamping member (51), and is clamped or released from the pre-guide rod (5) in the up-down direction.

2. The pre-guiding mechanism according to claim 1, characterized in that: The stopper (4) is provided with a mounting channel (42) extending in a direction perpendicular to the up-down direction, the mounting channel (42) being used for allowing a fixing part to penetrate into the stopper (4), the fixing part being used for fixing the stopper (4) on the lower die assembly (2); in the up-down direction, a portion of the pre-guide rod (5) is located in the matching channel (41), and the length of this portion of the pre-guide rod (5) is at least 10% of the total length of the pre-guide rod (5).

3. The pre-guiding mechanism according to claim 1, characterized in that: An upper snap-in (52) is also provided on the pre-guide rod (5) on the upper side of the lower snap-in (51), and the upper snap-in (52) can form a snap-fitting relationship with the movable clamping member (6) in the upper and lower directions; the pre-guide rod (5) is used to fix itself at different heights by snapping with the movable clamping member (6) through either the upper snap-in (52) or the lower snap-in (51).

4. The pre-guiding mechanism according to claim 3, characterized in that: The pre-guiding mechanism further comprises a fixing member (7) and an elastic member (8); the movable clamping member (6) and the fixing member (7) are located on the side of the limiting member (4), and the fixing member (7) is used to be fixed on the lower mold assembly (2); the elastic member (8) is located between the movable clamping member (6) and the fixing member (7), and is in contact with the movable clamping member (6) and the fixing member (7) at both ends thereof; the elastic member (8) is used to elastically deform when the movable clamping member (6) moves away from the pre-guiding rod (5), so as to provide the movable clamping member (6) with a force to cause the movable clamping member (6) to move in the reverse direction.

5. The pre-guiding mechanism according to claim 4, characterized in that: The movable clamping member (6) is provided with a mating portion (61), and the fixing member (7) is provided with a passage (71) penetrating the movable clamping member, and the mating portion (61) is movably arranged in the passage (71); a portion of the movable clamping member (6) is located on a side of the fixing member (7) close to the pre-guide rod (5), and a portion of the movable clamping member (6) is located on a side of the fixing member (7) away from the pre-guide rod (5); A blind hole is provided on the fixing member (7) at the side of the passage (71), one end of the elastic member (8) penetrates into the blind hole and contacts the bottom wall of the blind hole, and the other end of the elastic member (8) contacts a movable clamping member (6) located on the side of the fixing member (7) close to the pre-guide rod (5); the movable clamping member (6) located on the side of the fixing member (7) close to the pre-guide rod (5) is configured to be able to be clamped with the upper clamping member (52) or the lower clamping member (51).

6. The pre-guiding mechanism according to claim 5, characterized in that: The passage (71) has a shape that penetrates the fixing member (7); the movable clamping member (6) is partially located on a side of the passage (71) close to the pre-guide rod (5), and partially located on a side of the passage (71) away from the pre-guide rod (5); the mating portion (61) is a groove formed by being recessed downward from a portion of the upper surface of the movable clamping member (6).

7. The pre-guiding mechanism according to claim 4, characterized in that: The fixing member (7) comprises a surface contact wall (72), the surface contact wall (72) being located on a side of the movable clamping member (6) away from the pre-guide rod (5); the elastic member (8) is located between the surface contact wall (72) and the movable clamping member (6), and is in contact with the surface contact wall (72) and the movable clamping member (6) at its two ends.

8. The pre-guiding mechanism according to claim 7, characterized in that: The fixing member (7) further comprises two side walls (73) integrally connected with the contact wall (72); the two side walls (73) are respectively located at two opposite sides of the movable clamping member (6) and together with the contact wall (72) form a U-shaped body with an opening facing the pre-guide rod (5); the two side walls (73) form a sliding groove structure slidably connected to the movable clamping member (6); and the elastic member (8) is located between the two side walls (73).

9. The pre-guiding mechanism according to claim 8, characterized in that: A skirt portion (74) is formed extending from the side wall (73) toward the side of the side wall (73) away from the elastic member (8), and the skirt portion (74) is used for fixed connection with the lower mold assembly (2).

10. A stamping die assembly, characterized in that: The pre-guiding mechanism comprises the pre-guiding mechanism according to any one of claims 1 to 9, and further comprises an upper die assembly (1) and a lower die assembly (2); a positioning member (3) for positioning a sheet material is fixed on the lower die assembly (2); the pre-guiding mechanism is configured such that when the movable clamping member (6) is clamped with the lower clamping port (51), the height of the highest surface of the pre-guiding rod (5) is higher than the positioning member (3); The fitting clearance between the upper die assembly (1) and the positioning member (3) is greater than the fitting clearance between the pre-guide rod (5) and the fitting hole (11).

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