Mechanical self-locking type hydraulic die clamping device

Abstract

The utility model discloses a mechanical self-locking type hydraulic die clamper, which belongs to the technical field of die clamper equipment, and comprises a die clamper body and a self-locking mechanism, the die clamper body comprises a sliding seat and a hydraulic lifting cylinder positioned at the top of the sliding seat, the top of the sliding seat is fixedly connected with two mounting plates, a mandrel is rotatably mounted between the two mounting plates, and the self-locking mechanism is arranged on the mandrel. A pressing plate is mounted on the outer side of the middle of the mandrel, bearings located on the two sides of the pressing plate and located on the inner side of the mounting plate are mounted on the outer side of the mandrel, the self-locking mechanism comprises a ratchet wheel, an insertion rod, an extension spring and a handle, the ratchet wheel is mounted on the outer side of the mandrel and located on the inner side of the mounting plate, and the insertion rod penetrates through the top of the mounting plate. Through the arrangement of the self-locking mechanism, the hydraulic lifting cylinder ascends to drive the pressing plate to rotate, the pressing plate drives the core shaft to rotate, and therefore the ratchet wheel installed on the core shaft is driven to rotate, and when the hydraulic lifting cylinder breaks down, due to the self-locking function of the ratchet wheel and the inserting rod, the ratchet wheel cannot rotate reversely, and therefore the pressing plate can still tightly press a die and prevent the die from falling off.

Description

TECHNICAL FIELD

[0001] The utility model relates to a die clamp device, in particular to a mechanical self-locking type hydraulic die clamp, belongs to die clamp equipment technical field. BACKGROUND

[0002] The existing hydraulic die clamp all adopts ordinary type hydraulic die clamp, and the die clamp utilizes oil pressure pressurization to connect a mold and a workbench plate of an injection molding machine or a press machine together through a lever pressure plate of the die clamp itself. Because the mold is clamped by completely relying on oil pressure, if the oil pressure of all die clamps is lost at this time, the mold will be loose and cannot be fixed on the workbench plate, especially the hydraulic die clamp of the injection molding machine or the die casting machine, and the risk of mold falling exists once the oil pressure is lost. The existing treatment method can only adopt a multi-loop oil circuit cross to be controlled individually to reduce the risk of mold falling.

[0003] The utility model provides a new solution for the above problems. CONTENT

[0004] The utility model discloses a mechanical self-locking type hydraulic die clamp.

[0005] The utility model discloses the purpose that can be achieved through adopting the following technical scheme:

[0006] A mechanical self-locking type hydraulic die clamp, including die clamp body and self-locking mechanism, the die clamp body includes the slide and the hydraulic lift cylinder at the top of the slide, the top of the slide is fixedly connected with two mounting plates, the mandrel is rotatably installed between two mounting plates, the outer side of the middle part of the mandrel is installed with the pressure plate, the outer side of the mandrel is installed with the bearing located at the two sides of the pressure plate and the inner side of the mounting plate, the self-locking mechanism includes the ratchet wheel, the plug rod, the tension spring and the handle, wherein the ratchet wheel is installed on the outer side of the mandrel and is located at the inner side of the mounting plate, the plug rod penetrates the top of the mounting plate, and the bottom end of the plug rod is clamped with the mandrel, the handle is fixedly connected at the top of the plug rod, the tension spring is sleeved on the outer side of the plug rod, and the bottom end of the tension spring is fixedly connected at the top of the mounting plate, the top end of the tension spring is fixedly connected at the bottom of the handle, and the bottom of one end of the pressure plate is connected with the pressure block through the compression spring.

[0007] Preferably, the tail of the slide is fixedly connected with a push handle through a screw.

[0008] Preferably, the middle part of the pressure plate is provided with a mounting hole, and first limiting grooves are formed on the two sides of the mounting hole.

[0009] Preferably, the middle part of the mandrel is provided with a first limiting platform which is in sliding fit with the first limiting slot.

[0010] Preferably, the two ends of the mandrel are provided with end plates, and one side of the end plate is provided with a clamping spring which is mounted on the outer side of the mandrel.

[0011] Preferably, the front surface of the mounting plate is provided with a connecting hole, and the pressing plate and the bearing are mounted on the inner side of the connecting hole, and the two sides of the connecting hole are provided with sliding slots which are in fit with the first limiting slot.

[0012] Preferably, the top of the mounting plate is provided with an insertion hole which is in sliding fit with the insertion rod.

[0013] Preferably, the middle part of the ratchet wheel is provided with a second limiting slot, and the outer side of the mandrel is provided with a second connecting platform which is in fit with the second limiting slot.

[0014] Preferably, the bottom of one end of the pressing plate is provided with a sliding slot which is in sliding fit with the pressing block, and the top of the sliding slot is provided with a spring slot which is in fit with the compression spring.

[0015] Preferably, the compression spring is provided with two and is symmetrically mounted on the top of the pressing block, and the bottom of the pressing block is provided with anti-skid lines.

[0016] The mechanical self-locking type hydraulic mold clamp according to the utility model has the advantages that the self-locking mechanism is provided, the pressing plate is driven to rotate by the hydraulic lifting cylinder, the mandrel is driven to rotate by the pressing plate, the ratchet wheel mounted on the mandrel is driven to rotate, the pressing plate can still tightly press the mold when the hydraulic lifting cylinder fails due to the self-locking effect of the ratchet wheel and the insertion rod, and thus the mold is prevented from falling; the pressing block is mounted on the bottom end of the pressing plate by the compression spring, the pressing block directly acts on the surface of the mold in the process of clamping the mold, and the effect of pressure compensation is achieved, the ratchet wheel and the insertion rod are mechanically connected when the hydraulic lifting cylinder fails, and a certain gap may exist, and the pressing block and the compression spring can compensate the force, so that the mold is fixed firmly. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is an overall structure exploded view of a preferred embodiment according to the utility model;

[0018] Figure 2 It is an overall structure schematic view of a preferred embodiment according to the utility model;

[0019] Figure 3 It is a sliding seat structure schematic view of a preferred embodiment according to the utility model;

[0020] Figure 4A schematic view of a pressing plate structure according to a preferred embodiment of the present application is provided.

[0021] Figure 5 A schematic view of a mandrel structure according to a preferred embodiment of the present application is provided.

[0022] Figure 6 A schematic view of a pressing block structure according to a preferred embodiment of the present application is provided.

[0023] In the figure: 1, mold clamp body; 2, self-locking mechanism; 3, sliding seat; 4, hydraulic lifting cylinder; 5, mounting plate; 6, mandrel; 7, pressing plate; 8, ratchet; 9, insertion rod; 10, tension spring; 11, handle; 12, compression spring; 13, pressing block; 14, push handle; 15, bearing; 701, mounting hole; 702, first limiting groove; 601, first limiting table; 602, second connecting table; 801, second limiting groove; 16, end plate; 17, clasp spring; 501, connecting hole; 502, sliding groove; 503, insertion hole; 703, sliding groove; 704, spring groove. DETAILED DESCRIPTION

[0024] In order to make the skilled in the art more clear and explicit technical scheme of the present application, the following embodiments and the present application are described in further detail with reference to the drawings, but the embodiments of the present application are not limited thereto.

[0025] As Figures 1-6 shown, the mechanical self-locking hydraulic mold clamp provided by the present embodiment comprises a mold clamp body 1 and a self-locking mechanism 2, the mold clamp body 1 comprises a sliding seat 3 and a hydraulic lifting cylinder 4 located at the top of the sliding seat 3, the top of the sliding seat 3 is fixedly connected with two mounting plates 5, a mandrel 6 is rotatably installed between the two mounting plates 5, a pressing plate 7 is installed on the outer side of the middle part of the mandrel 6, bearings 15 are installed on the outer side of the mandrel 6 and located on the inner side of the mounting plates 5, the self-locking mechanism 2 comprises a ratchet 8, an insertion rod 9, a tension spring 10 and a handle 11, wherein the ratchet 8 is installed on the outer side of the mandrel 6 and located on the inner side of the mounting plate 5, the insertion rod 9 penetrates through the top of the mounting plate 5, the bottom end of the insertion rod 9 is interlocked with the mandrel 6, the handle 11 is fixedly connected at the top of the insertion rod 9, the tension spring 10 is sleeved on the outer side of the insertion rod 9, the bottom end of the tension spring 10 is fixedly connected on the top of the mounting plate 5, the top end of the tension spring 10 is fixedly connected on the bottom of the handle 11, and the pressing plate 7 is connected with a pressing block 13 through a compression spring 12 at one end of the bottom.

[0026] Through the setting of the self-locking mechanism 2, the hydraulic lifting cylinder 4 is lifted to drive the pressing plate 7 to rotate, the pressing plate 7 drives the mandrel 6 to rotate, thereby driving the ratchet wheel 8 installed on the mandrel 6 to rotate, when the hydraulic lifting cylinder 4 fails, due to the self-locking effect of the ratchet wheel 8 and the insertion rod 9, the ratchet wheel 8 cannot be reversed, therefore the pressing plate 7 can still press the mold tightly to prevent falling; through the setting of the pressing block 13, the pressing block 13 is installed at the bottom end of the pressing plate 7 through the compression spring 12, which directly acts on the mold surface during clamping the mold, and plays a role of pressure compensation, when the hydraulic lifting cylinder 4 fails, since the ratchet wheel 8 and the insertion rod 9 are mechanically connected, there may be a certain gap, and the pressing block 13 and the compression spring 12 can compensate this part of the force, so that the mold is fixed firmly.

[0027] In the embodiment, as shown in Figure 1 、 Figure 2 and Figure 3 , the tail of the sliding seat 3 is fixedly connected with a pushing handle 14 through a screw. Through the setting of the pushing handle 14, it is convenient to push the device to slide.

[0028] In the embodiment, as shown in Figure 1 、 Figure 4 and Figure 5 , the middle part of the pressing plate 7 is provided with a mounting hole 701, and first limiting grooves 702 are arranged on both sides of the mounting hole 701. The outer side of the middle part of the mandrel 6 is provided with a first limiting table 601 which is in sliding cooperation with the first limiting grooves 702. Through the setting of the first limiting grooves 702 and the first limiting table 601, it is convenient to connect them and make them rotate synchronously.

[0029] In the embodiment, as shown in Figure 1 、 Figure 2 and Figure 5 , end plates 16 are installed at both ends of the mandrel 6, and the one side of the end plate 16 is provided with a snap spring 17 which is installed on the outer side of the mandrel 6. Through the setting of the end plate 16 and the snap spring 17, the mandrel 6 can be prevented from sliding out of the connecting hole 501.

[0030] In the embodiment, as shown in Figure 1 、 Figure 3 and Figure 5 , the front surface of the mounting plate 5 is provided with a connecting hole 501, and the pressing plate 7 and the bearing 15 are installed on the inner side of the connecting hole 501. The sliding grooves 502 which are in cooperation with the first limiting grooves 702 are arranged on both sides of the connecting hole 501, and the top of the mounting plate 5 is provided with an insertion hole 503 which is in sliding cooperation with the insertion rod 9. Through the setting of the sliding grooves 502, it is convenient to disassemble and assemble the mandrel 6.

[0031] In the embodiment, as shown in Figure 1 、 Figure 2 and Figure 5As shown, the middle part of the ratchet wheel 8 is provided with a second limiting groove 801, and the outer side of the mandrel 6 is provided with a second connecting table 602 matched with the second limiting groove 801. Through the arrangement of the second limiting groove 801 and the second connecting table 602, the ratchet wheel 8 is facilitated to be installed, and the two can rotate synchronously.

[0032] In the embodiment, as shown in Figure 1 , Figure 3 and Figure 5 , the bottom of one end of the pressing plate 7 is provided with a sliding groove 703 matched with the pressing block 13, the top of the sliding groove 703 is provided with a spring groove 704 matched with the compression spring 12, the compression spring 12 is provided with two and is symmetrically installed on the top of the pressing block 13, and the bottom of the pressing block 13 is provided with anti-skid lines. Through the arrangement of the sliding groove 703 and the spring groove 704, the compression spring 12 is prevented from being damaged due to excessive force, the compression spring 12 is provided with two and is symmetrically installed on the top of the pressing block 13, and the force is uniform.

[0033] In the embodiment, as shown in Figure 1 Figure 2 Figure 5 Figure 1 Figure 4 Figure 6 Figures 1-6 , the working process of the mechanical self-locking hydraulic mold clamp provided in the embodiment is as follows:

[0034] Step 1: the mold clamp body 1 is pushed to one side of the mold through the push rod 14, the hydraulic lifting cylinder 4 is started to be lifted, the pressing plate 7 is driven to rotate, and the mold is clamped;

[0035] Step 2: the rotation of the pressing plate 7 drives the mandrel 6 to rotate, thereby driving the ratchet wheel 8 installed on the mandrel 6 to rotate, in the process of the rotation of the ratchet wheel 8, the plug rod 9 is continuously extruded to slide up in the insertion hole 503, and when the ratchet wheel 8 is rotated by one tooth, the plug rod 9 is clamped to the ratchet wheel 8 under the action of the stretching spring 10, so that the ratchet wheel 8 can only rotate in one direction;

[0036] Step 3: when the hydraulic lifting cylinder 4 fails, due to the self-locking action of the ratchet wheel 8 and the plug rod 9, the ratchet wheel 8 cannot be reversed, so the pressing plate 7 can still press the mold tightly to prevent falling.

[0037] The above is only a further embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and concept of the present application within the scope disclosed by the present application, which belongs to the protection scope of the present application.

Claims

1. A mechanical self-locking hydraulic clamp module, characterized in that, The utility model provides a mould clamp, including mould clamp body (1) and self locking mechanism (2), the mould clamp body (1) includes slide (3) and the hydraulic lifting cylinder (4) of the top of slide (3), the top fixedly connected with two mounting plate (5) of slide (3), the rotatable mounting of two mounting plate (5) between core shaft (6) is installed, the outside installation of the middle part of core shaft (6) has the pressure plate (7), the outside installation of core shaft (6) has the bearing (15) in the inside of mounting plate (5) and located pressure plate (7) both sides, the self locking mechanism (2) includes ratchet wheel (8), plug rod (9), tension spring (10) and handle (11), wherein the outside installation of ratchet wheel (8) is in the inside of mounting plate (5) and located the outside of core shaft (6), the top of mounting plate (5) is passed through plug rod (9), and the bottom end of plug rod (9) is mutually clamped with core shaft (6), handle (11) is fixedly connected in the top of plug rod (9), tension spring (10) is sleeved in the outside of plug rod (9), and the bottom end of tension spring (10) is fixedly connected in the top of mounting plate (5), and the top of tension spring (10) is fixedly connected in the bottom of handle (11), one end bottom of pressure plate (7) is connected with pressure block (13) through compression spring (12).

2. A mechanical self-locking hydraulic clamp according to claim 1, characterized in that, The tail of slide (3) is fixedly connected with a pushing handle (14) through screws.

3. A mechanical self-locking hydraulic clamp according to claim 1, wherein, A mounting hole (701) is formed in the middle part of pressure plate (7), and first limiting grooves (702) are formed on both sides of mounting hole (701).

4. A mechanical self-locking hydraulic clamp according to claim 3, wherein, A first limiting platform (601) is arranged on the outside of the middle part of core shaft (6) and is in sliding cooperation with first limiting grooves (702).

5. A mechanical self-energizing hydraulic clamp according to claim 1, wherein, End plates (16) are arranged on both ends of core shaft (6), and clamping springs (17) are arranged on one side of end plates (16) and are mounted on the outside of core shaft (6).

6. A mechanically self-locking hydraulic clamp according to claim 3, wherein, A connecting hole (501) is formed in the front of mounting plate (5), and pressure plate (7) and bearing (15) are mounted on the inside of connecting hole (501), and sliding grooves (502) are formed on both sides of connecting hole (501) and are in cooperation with first limiting grooves (702).

7. A mechanically self-locking hydraulic clamp according to claim 1, wherein, A plug hole (503) is formed in the top of mounting plate (5) and is in sliding cooperation with plug rod (9).

8. A mechanically self-locking hydraulic clamp according to claim 1, wherein, A second limiting groove (801) is formed in the middle part of ratchet wheel (8), and a second connecting platform (602) is arranged on the outside of core shaft (6) and is in cooperation with second limiting groove (801).

9. A mechanically self-locking hydraulic clamp according to claim 1, wherein, A sliding groove (703) is formed in one end bottom of pressure plate (7) and is in sliding cooperation with pressure block (13), and a spring groove (704) is formed in the top of sliding groove (703) and is in cooperation with compression spring (12).

10. A mechanical self-locking hydraulic clamp according to claim 1, wherein, Two compression springs (12) are arranged symmetrically on the top of pressure block (13), and anti-skid lines are formed in the bottom of pressure block (13).

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