Hydrodynamic cylinder and mold

Abstract

The utility model belongs to the technical field of stamping dies, and particularly relates to a fluid power cylinder and a die. The hydrodynamic cylinder is arranged on the die holder, a mounting plate is fixedly arranged at one end of the die holder, and the hydrodynamic cylinder comprises a through hole formed in the mounting plate and penetrating through the two ends of the mounting plate; the cylinder cover is arranged at the end, away from the die holder, of the mounting plate, and the two ends of the through hole are sealed through the cylinder cover and the die holder to form a cylinder cavity. According to the hydrodynamic cylinder, the die holder is adopted to replace a cylinder cover at one end of the hydrodynamic cylinder, the size of the hydrodynamic cylinder in the axial direction is reduced, and the requirement of the hydrodynamic cylinder for an installation space in the axial direction is lowered.

Description

TECHNICAL FIELD

[0001] The utility model belongs to stamping die technical field especially relates to fluid power cylinder and die. BACKGROUND

[0002] The stamping die is a kind of die for stamping processing, and is widely used in automobile, household appliance, electronic and other industries.In some processing processes (such as trimming, bending forming, deep drawing, etc.), in order to realize specific function or improve production efficiency, it is necessary to additionally set hydraulic cylinder or air cylinder.

[0003] Since the upper die and the lower die of the stamping die are fixed on the punch press, the installation space of the hydraulic cylinder or the air cylinder is limited, and the existing hydraulic cylinder or air cylinder needs to be improved.

[0004] For example, the patent with the application number 202021290288.8 discloses a plate type integrated oil cylinder group, which comprises an integrated cylinder body plate, at least two cylinder body holes are arranged on the integrated cylinder body plate, an oil channel hole connecting the cylinder body holes is formed on the integrated cylinder body plate, an oil cylinder upper end cover and an oil cylinder lower end cover are fixed at two ends of the cylinder body hole respectively, a piston group is slidably installed in the cylinder body hole, and the upper and lower rod bodies of the piston group pass through the middle holes of the oil cylinder upper end cover and the oil cylinder lower end cover respectively.

[0005] However, the oil cylinder of the above-mentioned patent still needs to reduce the installation space in the axial direction compared with the existing technology, and in actual use, it is still restricted by the installation space. UTILITY MODEL CONTENTS

[0006] The technical problem to be solved by the utility model lies in: providing a fluid power cylinder and die, which can reduce the demand for installation space in the axial direction.

[0007] In the first aspect, the utility model provides a fluid power cylinder, which is arranged on a die holder, one end of the die holder is fixedly provided with a mounting plate, and the fluid power cylinder comprises:

[0008] The through hole is arranged on the mounting plate and penetrates through both ends of the mounting plate;

[0009] The cylinder cover is arranged at the end of the mounting plate away from the die holder, and the cylinder cover and the die holder close both ends of the through hole to form a cylinder cavity.

[0010] Optionally, the fluid power cylinder further comprises:

[0011] The piston is slidably connected in the through hole, and the piston separates the cylinder cavity into a first chamber and a second chamber;

[0012] The first flow channel has a first power medium therein, and the first power medium is input or output to the first chamber through the first flow channel;

[0013] a second flow channel, the second flow channel having a second power medium therein, the second power medium being inputted or outputted into the second chamber through the second flow channel;

[0014] an output shaft, the output shaft extending out of the mounting plate into the second chamber, one end of the output shaft extending into the second chamber being fixedly connected with the piston;

[0015] a through hole, the through hole being arranged on the cylinder cover, the output shaft being inserted into the through hole and extending out of the cylinder cover.

[0016] Optionally, the fluid power cylinder further comprises a sealing mechanism, the sealing mechanism comprising:

[0017] a first sealing structure, the first sealing structure being arranged between the mounting plate and the die holder;

[0018] a second sealing structure, the second sealing structure being arranged between the piston and the through hole;

[0019] a third sealing structure, the third sealing structure being arranged between the cylinder cover and the mounting plate;

[0020] a fourth sealing structure, the fourth sealing structure being arranged between the output shaft and the through hole;

[0021] the first sealing structure and the second structure cooperate to seal the first chamber, and the second sealing structure, the third sealing structure and the fourth sealing structure cooperate to seal the second chamber.

[0022] Optionally, the first flow channel is arranged on the die holder, and the second flow channel is arranged on the mounting plate.

[0023] Optionally, a plurality of fluid power cylinders form a group.

[0024] the first flow channel comprises a main channel and a branch channel, one end of the main channel extending out of the die holder, the number of the branch channels corresponding to the number of the group of fluid power cylinders, one end of the branch channel being connected with the main channel, and the other end of the branch channel being in communication with the first chamber;

[0025] one end of the second flow channel extending out of the mounting plate, the second flow channel extending into the mounting plate to sequentially communicate the second chambers of the fluid power cylinders in the same group.

[0026] Optionally, the main channel penetrates through both ends of the die holder, the second flow channel penetrates through both ends of the mounting plate, and further comprising:

[0027] a plugging member, one end of the main channel being sealed by the plugging member, and one end of the second flow channel being sealed by the plugging member.

[0028] Optionally, further comprising:

[0029] a mounting bracket, the mounting bracket being provided with a connector;

[0030] The connecting pipe has one end connected with the joint and the other end connected with the second flow channel.

[0031] Optionally, the piston is provided with a round hole at one end, and the round hole is communicated with the first chamber.

[0032] Optionally, the round hole is provided with a buffer hole, the buffer hole is communicated with the first chamber, and the buffer hole is arranged opposite to the branch channel.

[0033] Optionally, the mold base is provided with a mounting groove on the side close to the mounting plate, and the mounting plate is mounted in the mounting groove.

[0034] In the second aspect, the utility model provides a mold which comprises the fluid power cylinder of any one of the above.

[0035] Compared with the prior art, the utility model has the advantages of:

[0036] The fluid power cylinder of the utility model adopts the mold base to replace the cylinder cover at one end, so that the size of the fluid power cylinder in the axial direction is reduced, and the demand of the fluid power cylinder on the installation space in the axial direction is reduced. DETAILED DESCRIPTION

[0037] The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute the limitation to the utility model.

[0038] Figure 1 It is the perspective view of the utility model;

[0039] Figure 2 It is the mold plate, mounting plate and cylinder cover assembly structure schematic view of the utility model;

[0040] Figure 3 It is the sectional view of the utility model;

[0041] Figure 4 It is the schematic view when the fluid power cylinder output shaft of the utility model is completely stretched out;

[0042] Figure 5 It is the A area close-up view of the utility model; Figure 3

[0043] Figure 6 It is the B area close-up view of the utility model; Figure 3

[0044] Figure 7 It is the C area close-up view of the utility model. Figure 3

[0045] ​​​In the figure: 1, die holder; 11, mounting frame; 12, joint; 13, connecting pipe; 14, mounting groove; 2, mounting plate; 3, fluid power cylinder; 31, through hole; 311, first chamber; 312, second chamber; 32, piston; 321, round hole; 322, buffer hole; 323, blind hole; 33, output shaft; 34, cylinder cover; 341, through hole; 342, boss; 35, first flow channel; 351, main channel; 352, branch channel; 36, second flow channel; 37, plugging piece; 38, sealing mechanism; 381, first sealing structure; 3811, first sealing piece; 3812, mounting hole; 382, second sealing structure; 3821, second sealing piece; 3822, annular groove; 383, third sealing structure; 3831, third sealing piece; 3832, clamping groove; 384, fourth sealing structure; 3841, fourth sealing piece; 3842, fifth sealing piece; 3843, first clamping hole; 3844, second clamping hole. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0047] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0048] Embodiment 1

[0049] Please refer to Figures 1-7 The present application provides a fluid power cylinder 3, which is arranged on a die holder 1. One end of the die holder 1 is fixedly connected with a mounting plate 2. A through hole 31 is formed in the mounting plate 2. The two ends of the through hole 31 are closed by the die holder 1 and the cylinder cover 34 respectively, thereby forming a cylinder cavity.

[0050] This invention removes the end cap at one end of the fluid power cylinder 3 and uses the mold base 1 to seal the cylinder cavity, making the fluid power cylinder 3 of this invention more compact in the axial direction, thereby reducing the space requirement during installation.

[0051] It should be noted that the cylinder cavity refers to the space inside the hydraulic cylinder.

[0052] A piston 32 is slidably connected within the through hole 31, dividing the space within the through hole 31 into a first chamber 311 and a second chamber 312. The first chamber 311 is the space between the mold base 1 and the piston 32 in the through hole 31, and the second chamber 312 is the space between the cylinder head 34 and the piston 32 in the through hole 31. An output shaft 33 is fixedly connected to the piston 32, and the output shaft 33 extends out of the cylinder head 34 after passing through the through hole 341 on the cylinder head 34. The first chamber 311 is connected to a first flow channel 35, through which a first power medium flows into or out of the first chamber 311. The second chamber 312 is connected to a second flow channel 36, through which a second power medium flows into or out of the second chamber 312.

[0053] It should be noted that in this embodiment, the example is that only one hydrodynamic cylinder 3 is installed on the mounting plate 2.

[0054] It should be noted that the first power medium and the second power medium can be fluids such as hydraulic oil, compressed air, gas, water, synthetic fluid, and vegetable oil (i.e., the fluid power cylinder 3 can be a pneumatic cylinder or a hydraulic cylinder).

[0055] It should be noted that, in this embodiment, the mold base 1, mounting plate 2, and cylinder head 34 are fixed in the following way: Figure 2 As shown, the bolt passes through the cylinder head 34 and the mounting plate 2 in sequence and is threaded into the threaded hole on the mold base 1. The bolt head is restricted from passing through the cylinder head 34. Furthermore, to reduce the installation space requirement, a stepped hole is provided on the cylinder head 34, and the bolt head is engaged in the larger hole of the stepped hole. It should also be noted that the mold base 1, the mounting plate 2, and the cylinder head 34 can also be connected and fixed in other ways, such as snap-fit.

[0056] As a preferred option, refer to Figure 1 , Figure 2 , Figure 3 The mold base 1 is provided with a mounting groove 14, and part or all of the mounting plate 2 is inserted into the mounting groove 14. In this way, the axial dimension of the hydrodynamic cylinder 3 can be further reduced.

[0057] As a preferred option, refer to Figure 4 , Figure 5A circular hole 321 is arranged at the end of the piston 32 close to the mold base 1. The circular hole 321 can balance the instantaneous pressure difference between the first chamber 311 and the second chamber 312, and reduce the impact load borne by the sealing mechanism 38. The oil in the circular hole 321 can also form an oil film on the surface of the piston 32, so as to avoid dry friction between the piston 32 and the through hole 31.

[0058] As a further preferred solution, referring to Figure 4 、 Figure 5 A buffer hole 322 is arranged on the circular hole 321. The first power medium collides with the buffer hole 322 after entering the first chamber 311. The buffer hole 322 is in a conical or spherical cap shape, which increases the contact area between the first power medium and the piston 32, reduces the impact force borne by the piston 32 per unit area, and is beneficial to improve the service life of the piston 32.

[0059] As a further solution, a blind hole 323 is arranged at the bottom of the buffer hole 322. The blind hole 323 extends into the end of the piston 32 and is in a spherical cap shape, which can further reduce the impact force and ensure the service life of the piston 32.

[0060] As a preferred solution, referring to Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 The fluid power cylinder 3 is also provided with a sealing mechanism 38. The sealing mechanism 38 can prevent the first power medium in the first chamber 311 and the second power medium in the second chamber 312 from leaking.

[0061] As a preferred solution, referring to Figure 1 、 Figure 2 An installation bracket 11 is also arranged. A connector 12 is arranged on the installation bracket 11. The second flow channel 36 is communicated with the connector 12 through a connecting pipe 13. Through this design, the pipe connected to the second flow channel 36 can avoid friction or collision with the mold base 1, thereby improving the stability and reliability of use.

[0062] As a preferred solution, the cylinder cover 34 is provided with a boss 342 close to the installation plate 2. The boss 342 is inserted into the through hole 31. The boss 342 can ensure the coaxiality of the through hole 341 and the through hole 31, and ensure the installation accuracy.

[0063] As a preferred solution, the first flow channel 35 is arranged on the mold base 1. One end of the first flow channel 35 is communicated with the first chamber 311, and the other end extends out of the outer wall of the mold base 1.

[0064] It should be noted that the first flow channel 35 can also be arranged on the installation plate 2.

[0065] As a preferred solution, the second flow channel 36 is arranged on the mounting plate 2, one end of the second flow channel 36 is in communication with the second chamber 312, and the other end of the second flow channel 36 extends out of the outer wall of the mounting plate 2.

[0066] It should be noted that the second flow channel 36 can also be arranged on the cylinder cover.

[0067] The working principle of the embodiment is that the fluid power cylinder 3 is started, the first power medium is input into the first chamber 311 through the first flow channel 35, at the same time, the second power medium is output from the second chamber 312 through the second flow channel 36, so that the piston 32 moves towards the cylinder cover 34, and when the piston 32 is attached to the cylinder cover 34, the output shaft 33 reaches the maximum stroke; the fluid power cylinder 3 is closed, the second power medium is input into the second chamber 312 through the second flow channel 36, and the first power medium is output from the first chamber 311 through the first flow channel 35, so that the piston 32 moves towards the mold base 1, and when the piston 32 is attached to the mold base 1, the output shaft 33 returns to the initial position.

[0068] It should be noted that a shaft sleeve is arranged between the piston 32 and the through hole 31, and a shaft sleeve is arranged between the output shaft 33 and the through hole 341.

[0069] Embodiment 2

[0070] Reference Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 The structure of the sealing mechanism 38 is described in detail.

[0071] The sealing mechanism 38 comprises:

[0072] The first sealing structure 381, as shown in Figure 6 The first sealing structure 381 comprises a first sealing member 3811 and a mounting hole 3812, the mounting hole 3812 is coaxially arranged with the through hole 31, the mounting hole 3812 is located at one end of the mounting plate 2 close to the mold base 1, and the first sealing member 3811 is arranged in the mounting hole 3812.

[0073] The second sealing structure 382, as shown in Figure 6 The second sealing structure 382 comprises a second sealing member 3821 and an annular groove 3822, the annular groove 3822 is arranged on the outer peripheral wall of the piston 32, and the second sealing member 3821 is arranged in the annular groove 3822.

[0074] The third sealing structure 383, as shown in Figure 7 The third sealing structure 383 comprises a third sealing member 3831 and a clamping groove 3832, the clamping groove 3832 is arranged at one end of the cylinder cover 34 close to the mounting plate 2, the clamping groove 3832 is coaxially arranged with the through hole 341, and the third sealing member 3831 is arranged in the clamping groove 3832.

[0075] Fourth sealing structure 384, reference Figure 7 The fourth sealing structure 384 includes a fourth sealing element 3841, a fifth sealing element 3842, a first locking hole 3843, and a second locking hole 3844. The first locking hole 3843 extends into the cylinder head 34 along the inner wall of the through hole 341, and the second locking hole 3844 extends into the cylinder head 34 along the inner wall of the through hole 341. The first locking hole 3843 and the second locking hole 3844 are respectively located at both ends of the through hole 341. Both the first locking hole 3843 and the second locking hole 3844 are coaxial with the through hole 341. The fourth sealing element 3841 is located in the first locking hole 3843, and the fifth sealing element 3842 is located in the second locking hole 3844.

[0076] The first sealing structure 381 and the second sealing structure 382 cooperate to seal the first chamber 311. The first sealing structure 381 can prevent the first power medium from leaking along the gap between the mounting plate 2 and the mold base 1, and the second sealing structure 382 can prevent the first power medium from leaking along the gap between the sealing piston 32 and the through hole 31. The second sealing structure 382, ​​the third sealing structure 383 and the fourth sealing structure 384 cooperate to seal the second chamber 312. The second sealing structure 382 can prevent the second power medium from leaking along the gap between the piston 32 and the through hole 31, the third sealing structure 383 can prevent the second power medium from leaking along the gap between the cylinder head 34 and the mounting plate 2, and the fourth sealing structure 384 can prevent the second power medium from leaking along the gap between the output shaft 33 and the through hole 341.

[0077] It should be noted that the first sealing element 3811, the second sealing element 3821, the third sealing element 3831, the fourth sealing element 3841 and the fifth sealing element 3842 in this utility model can all be implemented using existing sealing rings, such as O-rings, combination sealing rings, Y-rings, etc.

[0078] Example 3

[0079] refer to Figure 1 , Figure 3 This section details the arrangement of the first flow channel 35 and the second flow channel 36 when there are multiple fluid power cylinders 3.

[0080] Multiple fluid power cylinders 3 acting on the same part or product are set as a group. In order to ensure that multiple fluid power cylinders 3 in the same group can be synchronized, the following improvements are made.

[0081] The first flow channel 35 includes a main passage 351 and a plurality of branch passages 352, the number of the branch passages 352 is same as the number of the first chambers 311 in the group of the fluid power cylinders 3, one end of the branch passage 352 is communicated with the main passage 351, and the other end is communicated with the first chamber 311 of the corresponding fluid power cylinder 3; the main passage 351 is located in the mold base 1, and one end of the main passage 351 extends out of the outer side wall of the mold base 1. In this way, the first chambers 311 of the fluid power cylinders 3 in the same group have the same pressure and response speed.

[0082] The second flow channel 36 is arranged in the mounting plate 2, the second flow channel 36 is communicated with the second chambers 312 of the fluid power cylinders 3 in the same group, and one end of the second flow channel 36 extends out of the outer side wall of the mounting plate 2. In this way, the second chambers 312 of the fluid power cylinders 3 in the same group have the same pressure and response speed.

[0083] As a preferred scheme, both ends of the second flow channel 36 extend out of the outer side wall of the mounting plate 2, and the sealing member 37 is arranged at one end. The sealing member 37 is connected with the second flow channel 36 through threads. In this way, the machining difficulty can be reduced, and the maintenance cost can be reduced.

[0084] It should be noted that both ends of the main passage 351 can also extend out of the mold base 1, and the sealing member 37 is arranged at one end.

[0085] Embodiment 4

[0086] The utility model provides a kind of mould, which has the fluid power cylinder 3 of above-mentioned embodiment.

[0087] The mould includes an upper die or a lower die, and the fluid power cylinder 3 is arranged on the mold base 1 of the upper die and / or the lower die. The fluid power cylinder 3 of the utility model is located at the lower end of the upper die or the upper end of the lower die.

[0088] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and transformations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A fluid power cylinder, wherein the fluid power cylinder (3) is mounted on a mold base (1), and a mounting plate (2) is fixedly mounted on one end of the mold base (1), characterized in that, The hydrodynamic cylinder (3) includes: Through hole (31) is provided on mounting plate (2) and penetrates both ends of mounting plate (2); Cylinder head (34) is located at the end of the mounting plate (2) away from the mold base (1). The cylinder head (34) and the mold base (1) close the two ends of the through hole (31) to form the cylinder cavity.

2. The hydrodynamic cylinder according to claim 1, characterized in that, The hydrodynamic cylinder (3) also includes: Piston (32) is slidably connected in the through hole (31) and the piston (32) divides the cylinder into a first chamber (311) and a second chamber (312). The first flow channel (35) contains a first power medium, which enters or exits the first chamber (311) through the first flow channel (35). The second flow channel (36) contains a second power medium, which enters or exits the second chamber (312) through the second flow channel (36). Output shaft (33) extends out of the mounting plate (2) into the second chamber (312), and one end of the output shaft (33) extending into the second chamber (312) is fixedly connected to the piston (32); A through hole (341) is provided on the cylinder head (34), and the output shaft (33) is inserted into the through hole (341) and extends out of the cylinder head (34).

3. The hydrodynamic cylinder according to claim 2, characterized in that, The hydrodynamic cylinder (3) also includes a sealing mechanism (38), which includes: The first sealing structure (381) is disposed between the mounting plate (2) and the mold base (1); The second sealing structure (382) is disposed between the piston (32) and the through hole (31); The third sealing structure (383) is disposed between the cylinder head (34) and the mounting plate (2); The fourth sealing structure (384) is disposed between the output shaft (33) and the through hole (341): The first sealing structure (381) and the second sealing structure work together to seal the first chamber (311), and the second sealing structure (382), the third sealing structure (383) and the fourth sealing structure (384) work together to seal the second chamber (312).

4. The hydrodynamic cylinder according to claim 2, characterized in that, The first flow channel (35) is set on the mold base (1), and the second flow channel (36) is set on the mounting plate (2).

5. The hydrodynamic cylinder according to claim 4, characterized in that, Multiple hydrodynamic cylinders (3) are grouped together; The first flow channel (35) includes a main channel (351) and a branch channel (352). One end of the main channel (351) extends out of the mold base (1). The number of branch channels (352) corresponds one-to-one with the number of a set of fluid power cylinders (3). One end of the branch channel (352) is connected to the main channel (351), and the other end of the branch channel (352) is connected to the first chamber (311). One end of the second flow channel (36) extends out of the mounting plate (2), and the second flow channel (36) extends into the mounting plate (2) to connect the second chamber (312) of the same group of fluid power cylinders (3) in sequence.

6. The hydrodynamic cylinder according to claim 5, characterized in that, Also includes: Mounting bracket (11), on which a connector (12) is provided; Connecting pipe (13), one end of connecting pipe (13) is connected to connector (12), and the other end of connecting pipe (13) is connected to second flow channel (36).

7. The hydrodynamic cylinder according to claim 5, characterized in that, One end of the piston (32) is provided with a round hole (321), which is connected to the first chamber (311).

8. The hydrodynamic cylinder according to claim 7, characterized in that, A buffer hole (322) is provided on the round hole (321). The buffer hole (322) is connected to the first chamber (311). The buffer hole (322) is arranged opposite to the branch channel (352).

9. The hydrodynamic cylinder according to claim 1, characterized in that, The mold base (1) has a mounting groove (14) on the side near the mounting plate (2), and the mounting plate (2) is installed in the mounting groove (14).

10. A mold, characterized in that, Includes the fluid power cylinder (3) as described in any one of claims 1-9.

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