Forging die pressing plate
By using the clamping and supporting parts of the pressure plate body on the forging press, the misalignment problem caused by the mold fixing method is solved, the mold is stably fixed and horizontally movable, the wear of the guide pillar is reduced, and the concentricity and safety of the mold are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-03-10
AI Technical Summary
The existing method of fixing the mold to the worktable on the forging press results in no room for adjustment of the mold in the horizontal direction. This causes the guide pillars or guide walls to be forcibly bent or dry-ground when the upper and lower molds are misaligned, which poses a safety hazard.
The pressure plate body design includes a clamping part and a supporting part. The clamping part contacts the mold and restricts its movement away from the worktable, while the supporting part contacts the worktable and supports the pressure plate to remain stationary. It is fixed to the worktable by bolts. The gap between the clamping part and the mold allows the mold to move freely in the horizontal direction, and the supporting part provides stability.
It achieves effective fixation of the mold in the vertical direction, while providing room for movement in the horizontal direction, reducing wear on the guide pillars, avoiding hard bending or dry grinding, and improving the concentricity and stability of the upper and lower molds.
Smart Images
Figure CN223981134U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of parts manufacturing technology, and more specifically, to a forging die pressure plate. Background Technology
[0002] The dies on a forging press are generally divided into an upper die and a lower die. The upper die is fixed on the upper worktable of the press, and the lower die is fixed on the lower worktable of the press. The upper and lower dies are positioned by guide pillars or guide walls to prevent misalignment. Due to the influence of the sliding plate clearance of the press's movable crossbeam, the repeatability of the positioning accuracy of the lower moving worktable of the forging press, and equipment aging, misalignment between the lower and upper dies is a common phenomenon. In this case, the guide pillars or guide walls will play a role in correcting the misalignment.
[0003] There are two traditional methods for installing upper and lower molds. One is direct bolt connection. This method firmly fixes the mold to the worktable. Under the strong tension of the bolts, there is no relative movement between the mold and the worktable in the horizontal direction; otherwise, the bolts would loosen and fall off. The other method is a clamping plate combined with bolts. In this clamping method, the force of the bolts is transferred to the clamping plate, which then vertically presses the mold and the worktable together. There is no relative movement between them either; otherwise, the clamping plate would loosen and fall off. Therefore, traditional mold installation methods apply the force of the bolts directly or indirectly to the mold. While this method can firmly fix the mold to the worktable, it also leaves the mold with no room for adjustment in the horizontal direction. When the upper and lower molds are misaligned, the guide pillars or guide walls will move the entire mold and worktable together when they are corrected, resulting in a very large corrective force. This can cause severe hard bending or dry grinding of the guide pillars or guide walls. In this situation, the upper and lower molds are still in a certain extreme eccentric state. The current solution is to place the lower mold directly on the worktable by its own weight. However, in this case, the lower mold will be lifted up when ejecting the material, and the lower mold may also be lifted up when the forging sticks to the mold, posing a safety hazard.
[0004] In summary, how to provide a pressure plate that can effectively fix the mold in the vertical direction without affecting the mold's free sliding within a preset range is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0005] In view of this, the purpose of this utility model is to provide a forging die pressure plate that, after fixing the die and giving it a certain amount of room to move, allows for easy adjustment of the misalignment of the upper and lower dies under the action of the guide pillars, avoiding the occurrence of hard bending or dry grinding of the guide pillars, and improving the concentricity of the upper and lower dies.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A forging die pressure plate for fixing the die to a worktable, comprising:
[0008] The pressure plate body includes a pressing part and a supporting part. A preset gap is left between the pressing part and the mold. When the pressing part contacts the mold, the pressing part restricts the mold from moving away from the worktable. The supporting part contacts the worktable. When the pressure plate body is not subjected to external force, the supporting part supports the pressure plate body to remain stationary. The pressure plate body is provided with bolt holes.
[0009] Bolts and nuts, wherein the bolts are fitted with spherical concave-convex washers and pass through the bolt holes, and the nuts are used to fix the pressure plate body to the worktable.
[0010] Furthermore, the pressure plate body of this invention is manufactured using an integral molding method.
[0011] Furthermore, in this invention, the weight of the pressing part is less than that of the supporting part.
[0012] Furthermore, the support portion has a plurality of protrusions on the contact surface with the worktable, and the plurality of protrusions have the same height.
[0013] Furthermore, the plurality of protrusions include a first protrusion and a second protrusion, wherein the first protrusion is located on the side of the support portion closer to the worktable, and the second protrusion is located on the side of the support portion away from the worktable.
[0014] Furthermore, the support portion of this invention has at least one hollow hole.
[0015] Furthermore, the preset gap between the pressing part and the mold is 0.2-0.4mm.
[0016] Furthermore, in this invention, a 0-5mm gap is reserved between the side of the support portion near the mold and the mold.
[0017] Furthermore, the mold is provided with a pressing groove parallel to the contact surface between the pressing part and the mold, and the pressing part extends into the pressing groove and contacts the mold.
[0018] Furthermore, in this invention, the length of the pressing part is less than the width of the pressing groove.
[0019] The forging die pressure plate provided by this utility model allows for the following usage: the die is placed on a worktable, and the upper and lower dies are initially positioned. The pressure plate body is then fixed to the worktable with bolts. The pressure plate body includes a clamping part and a supporting part. The clamping part contacts the die. When the clamping part contacts the die, it restricts the die from moving away from the worktable. In other words, the clamping part fixes the die, limiting its movement perpendicular to the worktable, thereby preventing the die from detaching from the worktable. A preset gap is maintained between the clamping part and the die, ensuring that the clamping part does not constantly exert clamping force on the die. In other words, the mold can move freely in the direction parallel to the worktable. By giving the mold a reasonable amount of free space in the horizontal direction, the upper and lower molds can be easily corrected under the action of the guide pillars, so that the mold can always maintain concentricity and reduce the wear and deformation of the guide pillars. The support part is in contact with the worktable. When the pressure plate body is not subjected to external force, the support part supports the pressure plate body to remain stationary. That is to say, the support part can support the pressure plate body to remain stationary when it is not subjected to external force, thereby preventing the pressure plate body from tipping over during use and ensuring the sturdiness of the pressure plate body. At the same time, it can ensure that the preset gap between the clamping part and the mold remains fixed. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of a structure in the prior art where bolts are used to directly fix the mold;
[0022] Figure 2 This is a schematic diagram of the structure of a bolt pressure plate fixing mold in the prior art;
[0023] Figure 3 This is a schematic diagram of the axial structure of the pressure plate provided by this utility model when in use;
[0024] Figure 4 This is a side view of the pressure plate provided by this utility model during use;
[0025] Figure 5 This is a schematic diagram of the axial side structure of the pressure plate body provided by this utility model;
[0026] Figure 6 This is a structural schematic diagram of the axial cross-section of the pressure plate body provided by this utility model.
[0027] Figures 1-6 In the accompanying drawings, the reference numerals include:
[0028] 1. Workbench, 2. Bolt, 3. Mold, 4. Pressure plate body, 401. Pressing part, 402. Support part, 403. Hole, 404. Protrusion, 5. Pressing groove, 6. Nut, 7. Spherical concave-convex washer. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] The core of this utility model is to provide a forging die pressure plate. After fixing the die, it allows for a certain amount of movement space. Under the action of the guide pillar, the misalignment of the upper and lower dies can be easily adjusted, avoiding the hard bending or dry grinding of the guide pillar, and improving the concentricity of the upper and lower dies.
[0031] Please refer to Figures 1-6 A forging die pressure plate for fixing a die 3 to a workbench 1 includes a pressure plate body 4, bolts 2, nuts 6, and spherical concave-convex washers 7. The pressure plate body 4 includes a clamping part 401 and a supporting part 402. A preset gap is left between the clamping part 401 and the die 3. When the clamping part 401 contacts the die 3, the clamping part 401 restricts the die 3 from moving away from the workbench 1. The supporting part 402 contacts the workbench 1. When the pressure plate body 4 is not subjected to external force, the supporting part 402 supports the pressure plate body 4 to remain stationary. The pressure plate body 4 is provided with bolt holes. Bolts 2 pass through the bolt holes and the pressure plate body 4 is fixed to the workbench 1 by the nuts 6.
[0032] It should be noted that the pressure plate body 4 in this embodiment of the present invention can be made of steel or alloy material.
[0033] In addition, the pressure plate body 4 in this embodiment of the present invention can be of any shape, such as rectangular, cylindrical or other shapes, as long as the pressure plate body 4 remains stable when not subjected to external force.
[0034] It should be noted that in this embodiment of the present invention, the mold 3 can be an upper mold 3 or a lower mold 3, and the worktable 1 can be an upper worktable 1 or a lower worktable 1.
[0035] In addition, in this embodiment of the utility model, the upper surface of the workbench 1 is flat, and the upper surface of the workbench 1 is provided with several through-hole fixing grooves. The cross-section of the fixing groove is convex, and the upper side of the fixing groove penetrates the upper surface of the workbench 1. The bolt 2 is provided with a nut, and the nut can slide in the fixing groove. The width of the nut is greater than the width of the narrower part at the upper end of the fixing groove. At the same time, the width of the narrower part at the upper end of the fixing groove is greater than the diameter of the bolt 2. Therefore, the position of the bolt 2 can be adjusted by sliding the nut, that is, the adjustment of different fixing positions of the mold 3 can be completed, which is more convenient and adaptable to more adjustment positions.
[0036] Optionally, in some embodiments, in order to further improve the adaptability of fixing the mold 3, a spherical concave-convex washer (7) can be fitted on the bolt 2. That is, the spherical concave-convex washer 7 contacts the pressure plate body 4 to press the pressure plate body 4, and at the same time, when the mold 3 makes a slight movement, the eccentric force generated by the pressure plate body 4 on the bolt 2 is reduced.
[0037] Optionally, in some embodiments, the contact surfaces of the worktable 1 and the mold 3 are provided with corresponding positioning grooves. By inserting positioning keys into the positioning grooves, the fixing effect on the position of the mold 3 is further improved.
[0038] In use, mold 3 is placed on workbench 1, and the upper and lower molds 3 are initially positioned. The pressure plate body 4 is fixed to workbench 1 with bolts 2. The pressure plate body 4 includes a clamping part 401 and a supporting part 402. The clamping part 401 contacts mold 3. When the clamping part 401 contacts mold 3, it restricts mold 3 from moving away from workbench 1. In other words, the clamping part 401 fixes mold 3, restricting its movement perpendicular to workbench 1, thereby preventing the risk of mold 3 detaching from workbench 1. A preset gap is maintained between the clamping part 401 and mold 3, ensuring that the clamping part 401 does not constantly exert pressure on mold 3. The clamping force means that the mold 3 can move freely in the direction parallel to the worktable 1. By giving the mold 3 a reasonable free movement space in the horizontal direction, the upper and lower molds can be easily corrected under the action of the guide pillars, so that the mold 3 can always maintain concentricity and reduce the wear and deformation of the guide pillars. The support part 402 is in contact with the worktable 1. When the pressure plate body 4 is not subjected to external force, the support part 402 supports the pressure plate body 4 to remain stationary. That is to say, the support part 402 can support the pressure plate body 4 to remain stationary when it is not subjected to external force, thereby preventing the pressure plate body 4 from tipping over during use and ensuring the firmness of the pressure plate body 4. At the same time, it can ensure that the preset gap between the clamping part 401 and the mold 3 remains fixed.
[0039] Optionally, in some embodiments, the pressure plate body 4 is made in one piece. Specifically, the pressure plate body 4 can be made by forging, die casting or cutting, which effectively improves the strength of the pressure plate body 4 itself.
[0040] Optionally, in some embodiments, the weight of the pressing part 401 is less than that of the supporting part 402. That is, by increasing the weight of the supporting part 402, the center of gravity of the entire pressing plate body 4 is located on one side of the supporting part 402. Therefore, when the pressing plate body 4 is not subjected to external force, the supporting part 402 supports the pressing plate body 4 to remain stationary, avoiding the pressing plate body 4 from tipping over and ensuring effective pressing of the mold 3.
[0041] In the above embodiment, the pressing part 401 and the supporting part 402 are arranged vertically, that is, the pressing part 401 protrudes from one side of the supporting part 402, so that the pressure plate body 4 has an overall L-shaped structure, and the thickness and width of the supporting part 402 are greater than the thickness of the pressing part 401, so as to ensure that the weight of the supporting part 402 is greater than that of the pressing part 401.
[0042] Optionally, in some embodiments, the side of the support 402 away from the pressing part 401 is provided with an inclined surface, so that the side of the support 402 has a trapezoidal structure. The inclined surface can better transmit the force to the bottom of the support 402 away from the mold 3 when the pressure plate body 4 receives the impact force of the mold 3, thereby improving the force-bearing effect of the pressure plate body 4.
[0043] Please refer to Figures 1-6 In order to adapt the pressure plate body 4 to the forging working environment, in some embodiments, the support part 402 is provided with a number of protrusions 404 on the contact surface with the workbench 1. The number of protrusions 404 are of the same height. That is to say, by setting a number of protrusions 404, the bottom surface of the support part 402 is raised to a preset height to adapt to the dirty and messy working environment on the forging workbench 1. This can effectively improve the support stability of the pressure plate body 4 and facilitate workers to clean the dirt on the bottom of the pressure plate body 4.
[0044] Optionally, in some embodiments, the height of the protrusions 404 is less than 5 mm. Meanwhile, in order to ensure effective support for the pressure plate body 4, the protrusions 404 can be placed around the contact surface between the support part 402 and the worktable 1.
[0045] Optionally, in some embodiments, the plurality of protrusions 404 include a first protrusion and a second protrusion, the first protrusion being located on the side of the support portion 402 closer to the worktable 1, and the second protrusion being located on the side of the support portion 402 away from the worktable 1.
[0046] Please refer to Figures 1-6 In order to reduce the weight and manufacturing cost of the pressure plate body 4, in some embodiments, the support part 402 is provided with at least one hollow hole 403, which penetrates the pressure plate body 4, and can effectively reduce the weight and manufacturing cost of the pressure plate body 4.
[0047] In the above embodiment, the hollow hole 403 will not affect the strength of the pressure plate body 4. Since the force on the pressure plate body 4 is along the edge of the pressure plate body 4, the central hollow hole will not have an effect, and the pressure plate body 4 will not always have a pressing force on the mold 3.
[0048] Optionally, in some embodiments, the shape of the perforated hole 403 can be any shape, such as cylindrical, spherical or other shapes.
[0049] Please refer to Figures 1-6 In some embodiments, a gap of 0.2-0.4mm is reserved between the contact surface of the clamping part 401 and the mold 3 and the mold 3. That is to say, by reserving the gap, the clamping part 401 does not exert force on the mold 3. Under the pre-tightening force of the bolt 2, the mold 3 can not move in the vertical direction to achieve the effect of fixation.
[0050] Optionally, in some embodiments, the gap between the contact surface of the pressing part 401 and the mold 3 and the mold 3 can be set to other ranges, such as less than 0.2 mm or greater than 0.4 mm.
[0051] Please continue to refer to this. Figures 1-6 In some embodiments, a 0-5mm gap is reserved between the side of the support 402 near the mold 3 and the mold 3. This means that a certain gap is maintained between the support 402 and the mold 3, preventing contact between them. Therefore, when the mold 3 is subjected to a force perpendicular to the side of the support 402, the mold 3 has a certain amount of room to move. With this space, the upper and lower molds can be easily adjusted under small forces, thanks to the guide pillars, preventing forced bending or dry grinding and improving the concentricity of the upper and lower molds. When no horizontal movement space is required, a 0mm gap is left between the side of the support 402 near the mold 3 to restrict horizontal movement of the mold.
[0052] Optionally, in some embodiments, the reserved range between the side of the support portion 402 near the mold 3 and the mold 3 can be other values, such as less than 1 mm or greater than 5 mm.
[0053] Please refer to Figures 1-6 In some embodiments, the mold 3 is provided with a pressing groove 5 parallel to the contact surface between the pressing part 401 and the mold 3. The pressing part 401 extends into the pressing groove 5 and contacts the mold 3. By providing the pressing groove 5 on the mold 3 and making the pressing part 401 cooperate with the pressing groove 5, the mold 3 is pressed.
[0054] Optionally, in some embodiments, the clamping groove 5 is a strip-shaped structure that runs through the side of the mold 3, or the clamping groove 5 can be a partial groove.
[0055] Optionally, in some embodiments, the length of the pressing part 401 extending out of the support part 402 is less than the width of the pressing groove 5.
[0056] In other words, the key point of this utility model embodiment is that: the pressure plate body 4 is fixed to the worktable 1 by bolts 2. The pressure plate body 4 includes a pressing part 401 and a supporting part 402. The pressing part 401 contacts the mold 3. When the pressing part 401 contacts the mold 3, the pressing part 401 restricts the mold 3 from moving away from the worktable 1. That is, the pressing part 401 fixes the mold 3, restricting the movement of the mold 3 perpendicular to the worktable 1, thereby avoiding the risk of the mold 3 detaching from the worktable 1. A preset gap is left between the pressing part 401 and the mold 3. The preset gap prevents the pressing part 401 from constantly exerting a pressing force on the mold 3. That is to say, the mold 3 can move freely in the direction parallel to the worktable 1. By giving the mold 3 a reasonable free movement space in the horizontal direction, the upper and lower molds can be easily corrected under the action of the guide pillar, so that the mold 3 can always maintain concentricity and reduce the wear and deformation of the guide pillar. The support part 402 is in contact with the worktable 1. When the pressure plate body 4 is not subjected to external force, the support part 402 supports the pressure plate body 4 to remain stationary. In other words, the support part 402 can be made to keep the pressure plate body 4 stationary when not subjected to external force, thereby preventing the pressure plate body 4 from tipping over during use and ensuring the firmness of the pressure plate body 4. At the same time, it can ensure that the preset gap between the pressing part 401 and the mold 3 remains fixed.
[0057] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0058] The forging die pressure plate provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core idea of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.
Claims
1. A forging die press plate for fixing a die (3) to a table (1), characterized in that, The utility model relates to a press plate and die assembly, comprising: a press plate body (4) comprising a pressing part (401) and a supporting part (402), the pressing part (401) leaves a preset gap with the die (3), the pressing part (401) limits the die (3) from moving away from the workbench (1) when the pressing part (401) is in contact with the die (3), the supporting part (402) is in contact with the workbench (1), the supporting part (402) supports the press plate body (4) to be stationary when the press plate body (4) is not subjected to external force, the press plate body (4) is provided with a bolt hole; a spherical concave-convex washer (7), a bolt (2) and a nut (6), the bolt (2) is sleeved with the spherical concave-convex washer (7) and passes through the bolt hole, and the press plate body (4) is fixed to the workbench (1) through the nut (6).
2. A forging die platen according to claim 1 wherein, The press plate body (4) is made of integral molding.
3. A forging die platen according to claim 2, wherein The weight of the pressing part (401) is less than that of the supporting part (402).
4. A forging die platen according to claim 1 wherein, The supporting part (402) is provided with a plurality of protrusions (404) on the contact surface with the workbench (1), and the heights of the plurality of protrusions (404) are the same.
5. A forging die platen according to claim 4, wherein The plurality of protrusions (404) comprise first protrusions and second protrusions, the first protrusions are located on the side of the supporting part (402) close to the workbench (1), and the second protrusions are located on the side of the supporting part (402) away from the workbench (1).
6. A forging die platen according to claim 1 wherein, At least one hollow hole (403) is formed in the supporting part (402).
7. A forging die platen according to claim 5 wherein, The preset gap between the pressing part (401) and the die (3) is 0.2-0.4mm.
8. The method of claim 5, wherein, A 0-5mm gap is reserved between the side of the supporting part (402) close to the die (3) and the die (3).
9. A forging die platen according to any one of claims 1-8, characterized in that, The die (3) is provided with a pressing groove (5) parallel to the contact surface between the pressing part (401) and the die (3), the pressing part (401) extends into the pressing groove (5), and a 0-5mm gap is reserved between the pressing part (401) and the die (3).
10. A forging die platen according to claim 9, wherein The length of the pressing part (401) is less than the width of the pressing groove (5).