A new type of hose vulcanization cutting-free mold

Abstract

The utility model discloses a new type of cutting-free mold for vulcanizing a hose, which belongs to the technical field of rubber product vulcanization processing equipment, and includes a mandrel, wherein the mandrel includes a detachable part, and a positioning joint is provided at one end of the mandrel, and the positioning joint is detachably connected to the detachable part through an elastic member; a first end cap is provided on the outer sliding sleeve of the positioning joint. The mandrel is the main part of the hose vulcanization, and the positioning joint is fixedly connected to the tooling table, so that the mandrel can be fixed on the tooling table to complete the vulcanization operation of the hose. The detachable part of the mandrel is one end of the mandrel, which can be fitted on the positioning joint and can also be removed from the positioning joint; when the vulcanization operation is completed, the mandrel is removed for demoulding, so as to avoid the demoulding force acting on the positioning joint and causing damage to the positioning joint; wherein the elastic member can enhance the degree of fit between the mandrel and the positioning joint, and prevent the mandrel and the positioning joint from being loose and unstable.

Description

Technical Field

[0001] The utility model relates to a rubber hose vulcanization mold, more specifically, it relates to a novel rubber hose vulcanization cutting-free mold. Background Art

[0002] The existing hose vulcanization cutting-free mold can improve the efficiency of hose vulcanization and reduce the cutting process. Usually, after the hose is vulcanized on the mandrel, the hose can be demoulded directly. However, the hose vulcanization mold is generally placed on a workbench. If the mold is demoulded directly on the workbench, the positioning element at the bottom of the mandrel is easily damaged or broken under the action of a large demoulding force, which makes the mold unusable.

[0003] For example: Chinese patent announcement number CN202878543U, announcement date April 17, 2013, the name of the utility model is a hose vulcanization fixture, the application discloses a hose vulcanization mold structure, including a core rod and front and rear positioners, the two ends of the core rod are respectively equipped with a front positioner and a rear positioner, the front positioner is fixedly connected to the core rod, the rear positioner is slidably matched with the core rod, and the two end surfaces of the front positioner and the rear positioner are perpendicular to the center hole. This solution can ensure the consistency of product length, improve production efficiency and reduce costs. However, the mold can only be operated on a workbench when demolding the hose, which can easily greatly reduce the service life of the mold due to the demolding force. Utility Model Content

[0004] The utility model overcomes the problem that the existing hose vulcanization cutting-free mold causes mold damage during demoulding, and provides a novel hose vulcanization cutting-free mold. This solution avoids the hose vulcanization mold being demoulded directly on a workbench. After the hose vulcanization is completed, the mold can be easily removed, and the demoulding force is avoided from acting on the positioning original on the workbench, thereby greatly improving the practicability of the mold.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a new type of rubber hose vulcanization cutting-free mold, including a mandrel, the mandrel includes a detachable part, one end of the mandrel is provided with a positioning joint, the positioning joint and the detachable part are detachably connected through an elastic member; the outer sliding sleeve of the positioning joint is provided with a first end cap. The mandrel is the main part of the rubber hose vulcanization, and the positioning joint is fixedly connected to the tooling table, so that the mandrel can be fixed on the tooling table to complete the vulcanization operation of the rubber hose. The detachable part of the mandrel is one end of the mandrel, which can be matched on the positioning joint and can also be removed from the positioning joint; when the vulcanization operation is completed, the mandrel is removed for demoulding, which can avoid the demoulding force acting on the positioning joint and causing damage to the positioning joint; wherein the elastic member can enhance the degree of matching between the mandrel and the positioning joint, and prevent the mandrel and the positioning joint from loosening and instability; the first end cap can slide outside the positioning joint to adjust the position, and is mainly used to limit the rubber hose on the mandrel. Since the core rod and the positioning joint can be disassembled, the same positioning joint can be adapted to a wider range of core rod structures, which can greatly reduce the number of tooling and improve enterprise efficiency.

[0006] Preferably, a receiving cavity is provided inside the positioning joint, and a guide groove and a buckle groove are provided inside the receiving cavity, and the guide groove and the buckle groove are staggered; the detachable part of the mandrel is provided with a clamping block that cooperates with the guide groove and the buckle groove. The positioning joint and the detachable part of the mandrel are connected by the receiving cavity. In this scheme, the receiving cavity is provided inside the positioning joint, so that the mandrel can be inserted into the receiving cavity in the positioning joint to complete the cooperation. The guide groove inside the receiving cavity can play a guiding and avoiding role for the clamping block on the mandrel, and the buckle groove mainly cooperates with the clamping block to complete the circumferential fixation. Specifically, the clamping block on the mandrel is inserted into the receiving cavity of the positioning joint along the guide groove, and then the mandrel is rotated so that the clamping block rotates to the buckle groove position, so that the clamping block enters the buckle groove, and finally the circumferential fixation of the mandrel and the positioning joint is achieved.

[0007] Preferably, the detachable part of the mandrel is provided with a accommodating cavity, and a guide groove and a buckle groove are provided in the accommodating cavity, and the guide groove and the buckle groove are staggered; the positioning joint is provided with a clamping block that cooperates with the guide groove and the buckle groove. The positioning joint and the detachable part of the mandrel are connected by the accommodating cavity. In this scheme, the accommodating cavity is set in the end face of the detachable part of the mandrel, so that the accommodating cavity of the mandrel can be put on the positioning joint to complete the cooperation. The guide groove inside the accommodating cavity can play a guiding and avoidance role for the clamping block on the mandrel, and the buckle groove mainly cooperates with the clamping block to complete circumferential fixation. Specifically, the clamping block on the positioning joint is inserted into the accommodating cavity of the mandrel along the guide groove, and then the mandrel is rotated to make the buckle groove rotate to the position of the clamping block, so that the clamping block enters the buckle groove, and finally the circumferential fixation of the mandrel and the positioning joint is realized.

[0008] Preferably, the accommodating cavity is provided with the elastic member, which can fix the core rod and the positioning joint axially, and when the clamping block and the buckle groove are matched, the clamping block can be pressed into the buckle groove through the elastic action of the elastic member, thereby preventing the clamping block from axial displacement in the buckle groove and achieving axial fixation.

[0009] Preferably, it further comprises a second end cap, which is detachably connected to the end of the mandrel away from the detachable part. The second end cap is detachably connected to the mandrel, and the end of the mandrel connected to the second end cap is used for inserting into the hose or performing the demoulding operation of the hose.

[0010] Preferably, a first limiting hole is provided in the first end cap, and a second limiting hole is provided in the second end cap, and the apertures of the first limiting hole and the second limiting hole are both larger than the outer diameter of the mandrel. The limiting holes on the first end cap and the second end cap can accommodate the outer surface of the hose, and the first limiting hole and the second limiting hole can be used to position the two ends of the hose in the circumferential direction.

[0011] Preferably, the end of the positioning joint is threadedly connected to the first end cap. The first end cap is threadedly connected to the positioning joint, so that the first end cap can be fixed on the positioning joint to fix and limit the rubber hose.

[0012] Preferably, the second end cap and the first end cap are provided with exhaust holes. The first end cap and the second end cap can exhaust the hot air inside the end caps to prevent the air inside the end caps from increasing in temperature and pressure, thereby affecting the vulcanization effect of the hose.

[0013] Preferably, the end of the mandrel away from the detachable portion is provided with a positioning ring, and the second end cap is provided with a positioning hole. The mandrel can cooperate with the second end cap, and when the mandrel is inserted into the second end cap, the positioning ring on the mandrel is located at the position of the positioning hole, and a pin or other connector is passed through the positioning hole and clamped with the positioning ring, so that the mandrel and the second end cap can be fixed.

[0014] Compared with the prior art, the beneficial effects of the present invention are: (1) it is convenient to disassemble the mold, avoiding direct demoulding of the hose on the workbench, and improving the service life of the mold; (2) one workbench can be adapted to a variety of different hose vulcanization molds, improving the versatility of the workbench and the mold; (3) the structure is simple, the production cost is low, and local parts can be replaced if damaged; there is no need to replace the entire mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an axonometric drawing of the present utility model.

[0016] Figure 2 It is a schematic diagram of the core rod of the utility model.

[0017] Figure 3 It is a schematic diagram of the first end cap of the utility model.

[0018] Figure 4 It is a schematic diagram of the second end cap of the utility model.

[0019] Figure 5 It is a schematic diagram of the cooperation between the core rod and the positioning joint of the utility model.

[0020] In the figure: 1. core rod, 2. detachable part, 3. positioning joint, 4. elastic member, 5. first end cap, 6. accommodating cavity, 7. guide groove, 8. buckle groove, 9. clamping block, 10. second end cap, 11. first limiting hole, 12. second limiting hole, 13. exhaust hole, 14. positioning ring, 15. positioning hole. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0022] Example 1: Figures 1 to 5 A novel rubber hose vulcanization cutting-free mold is shown, comprising a mandrel 1, a first end cap 5, a second end cap 10 and a positioning joint 3. The mandrel 1 is a Z-shaped bent rod-shaped structure, one end of the mandrel 1 is a detachable part 2, which can be connected to the positioning joint 3; the end of the mandrel 1 away from the detachable part 2 is a demoulding end, which is detachably connected to the second end cap 10.

[0023] One end of the positioning joint 3 is fixedly connected to the tooling table (not shown in the figure), and the other end of the positioning joint 3 is connected to the detachable part 2 of the core rod 1. Figure 5 As shown, the upper part is the detachable part 2 of the mandrel 1, and the lower part is the positioning joint 3. Two symmetrically arranged clamping blocks 9 are arranged on the detachable part 2 of the mandrel 1, and a receiving cavity 6 is arranged in the positioning joint 3. A symmetrically arranged guide groove 7 is arranged in the receiving cavity 6. The guide groove 7 can be inserted into the clamping block 9, and two symmetrically arranged buckle grooves 8 are arranged at a position perpendicular to the line between the two guide grooves 7. The two buckle grooves 8 can accommodate the structure of the clamping block 9. An elastic member 4 is also arranged at the bottom of the receiving cavity 6, and the elastic member 4 is a spring.

[0024] A first end cap 5 is also sleeved on the outside of the positioning joint 3, and the first end cap 5 can move freely on the outside of the positioning joint 3. One end of the positioning joint 3 is fixed to the workbench, and the other end is provided with a threaded section. The first end cap 5 is also provided with a thread inside. When the first end cap 5 moves to the threaded section, it can be threadedly connected and fixed with the end of the positioning joint 3, and at this time, the first end cap 5 is located at the connection position between the positioning joint 3 and the core rod 1.

[0025] A first limiting hole 11 is provided on the first end cap 5. Figure 3As shown, the interior of the first end cap 5 is actually a stepped hole structure, the small-diameter portion cooperates with the positioning joint 3 and can be threaded, and the large-diameter portion is the first limiting hole 11. When the first end cap 5 is fixed to the positioning joint 3, the first limiting hole 11 can cover a part of the core rod 1 structure. And the diameter of the first limiting hole 11 is larger than the outer diameter of the core rod 1. When the rubber hose is sleeved on the core rod 1, the first limiting hole 11 can cover the rubber hose on the core rod 1, so that one end of the rubber hose is located in the first limiting hole 11, which plays a role in fixing and limiting one end of the rubber hose.

[0026] Similarly, a second end cap 10 is detachably connected to the demoulding end of the core rod 1 (the end away from the detachable part 2), such as Figure 2 and Figure 4 As shown, the demoulding end of the mandrel 1 is in the shape of a round cone, which is convenient for inserting the second end cap 10. In addition, the interior of the second end cap 10 is also in the shape of a stepped hole, and the portion with a small aperture is slidably matched with the demoulding end, while the portion with a large aperture is the second limiting hole 12. When the second end cap 10 is inserted into the demoulding end, it will abut against the end of the hose inserted on the mandrel 1. Similarly, the aperture of the second limiting hole 12 is larger than the outer diameter of the mandrel 1, and the hose on the mandrel 1 will also be covered in the second limiting hole 12, thereby limiting and fixing the end of the hose. That is, the two ends of the hose are fixedly limited by the first end cap 5 and the second end cap 10, respectively, to achieve axial and circumferential fixation.

[0027] It should be noted that if Figure 2 and Figure 4 As shown, a positioning hole 15 is provided on the second end cap 10, and the positioning hole 15 is provided at an end away from the second limiting hole 12, and a positioning ring 14 is provided on the demolding end of the core rod 1. When the second end cap 10 is inserted into the demolding end of the core rod 1, it abuts against the rubber hose. At this time, the positions of the positioning ring 14 and the positioning hole 15 will be aligned, so that a positioning piece is used to clamp with the positioning ring 14 through the positioning hole 15, so that the second end cap 10 can be axially fixed on the core rod 1 to prevent the second end cap 10 from falling off the demolding end.

[0028] A plurality of exhaust holes 13 are also provided in the circumferential direction of the first end cap 5 and the second end cap 10. The exhaust holes 13 on the first end cap 5 and the second end cap 10 can discharge the hot air inside the end caps to prevent the air inside the end caps from increasing in temperature and pressure and affecting the vulcanization effect of the hose.

[0029] When the hose vulcanization operation is required, the hose is firstly placed on the mandrel 1, and then the removable part 2 of the mandrel 1 is inserted into the accommodating chamber 6, and the two clamping blocks 9 on the mandrel 1 move along the guide groove 7, and then the end face of the removable part 2 of the mandrel 1 abuts against the spring, and the spring is compressed to continue to move toward the inside of the accommodating chamber 6 until the clamping block 9 abuts against the bottom of the guide groove 7, and then the mandrel 1 is rotated so that the clamping block 9 is offset from the guide groove 7 to prevent the removable part 2 of the mandrel 1 from leaving the accommodating chamber 6. Then the clamping block 9 is rotated to the buckle groove 8 position, and under the elastic force of the spring, the mandrel 1 is lifted up a certain distance, so that the clamping block 9 enters the buckle groove 8, and the clamping block 9 abuts against the bottom of the buckle groove 8; finally, the assembly of the mandrel 1 and the positioning joint 3 is realized.

[0030] Then, the hose fixing operation is performed. Since the first end cap 5 is sleeved on the positioning joint 3 and is slidably connected to the main body of the positioning joint 3, the first end cap 5 is moved to the threaded section at the upper end of the positioning joint 3 and the first end cap 5 is screwed onto the positioning joint 3. At this time, the first limiting hole 11 of the first end cap 5 can just cover the outer surface of the hose and fix one end of the hose. At the other end of the mandrel 1, the second end cap 10 is directly inserted, and the second limiting hole 12 on the second end cap 10 covers the outer surface of the other end of the hose and fixes the hose. In this way, the hose is fixed on the mandrel 1, and the vulcanization operation is finally performed.

[0031] After the vulcanization operation of the hose is completed, the detachable part 2 of the core rod 1 is first removed from the positioning joint 3. The specific removal method is opposite to the assembly process and will not be repeated here. After the core rod 1 is removed, the second end cap 10 is removed from the core rod 1, and then the hose is demolded, thereby avoiding direct demolding on the tooling.

[0032] It should be noted that when the rubber hose is passing through the mold (the rubber hose is put on the core rod 1), a medium that facilitates demoulding needs to be added between the rubber hose and the core rod 1, so as to facilitate the demoulding operation of the rubber hose.

[0033] Embodiment 2: The only difference between this embodiment and embodiment 1 is that the positions of the accommodating cavity 6 and the clamping block 9 are interchanged. Specifically, the detachable part 2 of the core rod 1 is provided with an accommodating cavity 6, and the accommodating cavity 6 is provided with a guide groove 7 and a buckle groove 8, and the guide groove 7 and the buckle groove 8 are staggeredly distributed; the positioning joint 3 is provided with a clamping block 9 that cooperates with the guide groove 7 and the buckle groove 8.

[0034] In this solution, the accommodating chamber 6 is arranged in the end face of the detachable part 2 of the core rod 1, so that the accommodating chamber 6 of the core rod 1 can be put on the positioning joint 3 to complete the cooperation. The guide groove 7 inside the accommodating chamber 6 can guide and avoid the block 9 on the core rod 1, and the buckle groove 8 mainly cooperates with the block 9 to complete the circumferential fixation. Specifically, the block 9 on the positioning joint 3 is inserted into the accommodating chamber 6 of the core rod 1 along the guide groove 7, and then the core rod 1 is rotated so that the buckle groove 8 is rotated to the position of the block 9, so that the block 9 enters the buckle groove 8, and finally the circumferential fixation of the core rod 1 and the positioning joint 3 is achieved. The usage is basically the same as in Example 1, and it will not be repeated here.

Claims

1. A new type of hose vulcanization cutting-free mold, characterized in that: It includes a core rod, which includes a detachable part. A positioning joint is provided at one end of the core rod, and the positioning joint is detachably connected to the detachable part through an elastic member; a first end cap is provided on the external sliding sleeve of the positioning joint; an accommodating cavity is provided inside the positioning joint, and a guide groove and a buckle groove are provided in the accommodating cavity, and the guide groove and the buckle groove are staggered; the detachable part of the core rod is provided with a clamping block that cooperates with the guide groove and the buckle groove.

2. A new type of hose vulcanization cutting-free mold, characterized in that: It includes a core rod, which includes a detachable part. A positioning joint is provided at one end of the core rod, and the positioning joint is detachably connected to the detachable part through an elastic member; a first end cap is provided on the external sliding sleeve of the positioning joint; a receiving cavity is provided on the detachable part of the core rod, and a guide groove and a buckle groove are provided in the receiving cavity, and the guide groove and the buckle groove are staggered; a clamping block matching with the guide groove and the buckle groove is provided on the positioning joint.

3. A new type of hose vulcanization cutting-free mold according to claim 1 or 2, characterized in that: The elastic member is arranged in the accommodating cavity.

4. A new type of hose vulcanization cutting-free mold according to claim 1 or 2, characterized in that: It also includes a second end cap, which is adaptably and detachably connected to an end of the mandrel away from the detachable portion.

5. A new type of hose vulcanization cutting-free mold according to claim 4, characterized in that: A first limiting hole is provided in the first end cap, and a second limiting hole is provided in the second end cap. The diameters of the first limiting hole and the second limiting hole are both larger than the outer diameter of the core rod.

6. A new type of hose vulcanization cutting-free mold according to claim 1 or 2, characterized in that: The end of the positioning joint is threadedly connected to the first end cap.

7. A new type of hose vulcanization cutting-free mold according to claim 5, characterized in that: The second end cap and the first end cap are provided with exhaust holes.

8. A new type of hose vulcanization cutting-free mold according to claim 4, characterized in that: A positioning ring is arranged at one end of the core rod away from the detachable part, and a positioning hole is arranged on the second end cap.

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