CN204505172U - Hot forming tool water channel plug dismantling device - Google Patents

Abstract

The utility model relates to a dismantling tool for a waterway plug of a thermoforming mold, which comprises a pull rod, one end of the pull rod is provided with an external thread corresponding to a screw hole on a plug post, and the other end is provided with a clamp with a smaller diameter and matched with a riveting gun. Department; the periphery of the pull rod is provided with a sleeve that slides with the pull rod, the inner diameter of the sleeve is smaller than the outer diameter of the auxetic plug, and the inner wall of the sleeve is provided with a spiral groove. The utility model uses a longer sleeve and a pull rod to realize the disassembly and assembly of the auxetic plug at the deep hole, cooperates with a riveting gun to improve work efficiency, is suitable for mass production, and at the same time prevents the pull rod from being subjected to rotational torque, and the pull rod Longer service life. The inner wall of the sleeve is provided with a spiral groove, and the exhaust effect of the spiral groove ensures that the sleeve and the tie rod can slide flexibly when the matching gap is small, so that the sleeve and the tie rod have a better coaxiality and ensure auxetic The installation effect of the plug; at the same time, the spiral groove also has the function of removing impurities, avoiding the damage of the sleeve and the tie rod by impurities during use.

Description

Thermoforming mold water channel plug removal tool

technical field

The utility model relates to a dismantling tool for an auxetic plug, in particular to a dismantling tool for a thermoforming mold water channel plug.

Background technique

Most of the cooling channels of thermoforming molds are processed by deep hole drilling. Therefore, special waterway plugs (mold expansion throat plugs, mold auxetic plugs) are needed to seal the water holes to prevent the mold from leaking. A commonly used auxetic plug as shown in Figure 3 is composed of a plug barrel 8 and a plug post 9, and the plug post 9 is provided with a screw hole. When in use, the plug cylinder 8 cooperates with the water hole, and the plug rod 9 enters the plug cylinder 8 to cause radial expansion of the plug cylinder 8, and the axial stress is transformed into the radial expansion effect of the plug cylinder 8, thereby forming an effective high-pressure leak-free seal. The existing technology uses a bolt and a sleeve to disassemble the auxetic plug. When installing the auxetic plug, first put the auxetic plug into the water hole, and the bolt passes through the sleeve and is screwed into the plug post 9 In the screw hole of the mold, use the hex wrench to turn the bolt, and pull the plug 9 into the plug barrel 8 to block the water hole of the mold. When disassembling the auxetic plug, the bolt passes through the sleeve and is screwed into the plug 9. Use the hex wrench to twist the bolt, pull the plug 9 until the plug 9 is separated from the plug 8, and then take out the plug 8. Complete the disassembly process.

During use, it is found that the existing technology has the following problems: the length of the sleeve and the bolt is not enough, and the installation and disassembly of the deep hole plug cannot be carried out; the torque rotation of the slender bolt is not enough and the bolt is not strong enough to break; it is necessary to use a hexagonal wrench, It is not very convenient to disassemble and assemble the auxetic plug, especially when a large batch of operations is required, which affects the work efficiency of workers; the coaxiality of the sleeve and the bolt cannot be guaranteed, which affects the installation effect of the auxetic plug.

Contents of the invention

The purpose of this utility model is to propose a disassembly tool for waterway plugs of thermoforming molds, which can be applied to the disassembly and assembly of auxetic plugs at deep holes, and can improve the work efficiency of workers; and the tool has a long service life and is easy to install. The effect is good.

The tool for removing and assembling the water channel plug of a thermoforming mold according to the utility model includes a pull rod, one end of the pull rod is provided with an external thread corresponding to the screw hole on the plug post, and the other end is provided with a smaller diameter, which is compatible with a riveting gun. Cooperating clamping part; the outer periphery of the pull rod is provided with a sleeve slidingly fitted with the pull rod, the inner diameter of the sleeve is smaller than the outer diameter of the auxetic plug, and the inner wall of the sleeve is provided with a spiral groove.

Further, the length of the sleeve is not less than 200mm, so as to realize the disassembly and assembly of the auxetic plug at the deep hole, and the longer sleeve is convenient for workers to hold.

Further, the tie rod is made of Cr12MoV steel, so that the tie rod has higher hardness, strength and better wear resistance.

Compared with the prior art, the utility model has made improvements. The longer sleeve and pull rod are used to realize the disassembly and assembly of the auxetic plug at the deep hole, and the riveting gun is used to improve the working efficiency, which is suitable for mass production; At the same time, the pull rod is not subjected to rotational torque, and the service life of the pull rod is longer. There is a spiral groove on the inner wall of the sleeve. The exhaust effect of the spiral groove ensures that the sleeve and the tie rod can slide flexibly in the case of a small matching gap, so that the sleeve and the tie rod have a better coaxiality and ensure auxetic plugging. The installation effect of the head; at the same time, the spiral groove also has the function of removing impurities to prevent the sleeve and tie rod from being damaged by impurities during use.

Description of drawings

Fig. 1 is the working schematic diagram of the utility model;

Fig. 2 is the structural representation of sleeve;

Figure 3 is a schematic structural view of the auxetic plug.

In the figure: 1—auxetic plug; 2—sleeve; 3—spiral groove; 4—tie rod; 5—clamping part; 6—external thread; 7—rivet gun; 8—plug barrel; .

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, the thermoforming mold water channel plug removal tool includes a pull rod 4 made of Cr12MoV steel, one end of the pull rod 4 is provided with an external thread 6 corresponding to the screw hole on the plug post 9, and the other end is provided with a diameter The clamping part 5 which is smaller and cooperates with the riveting gun 7. Both the sudden change in diameter of the tie rod 4 and the tail end of the external thread 6 are provided with a smooth transition to prevent stress concentration. The periphery of the pull rod 4 is provided with a sleeve 2 that slides with the pull rod 4, the length of the sleeve 2 is not less than 200mm, and the inner diameter of the sleeve 2 is smaller than the outer diameter of the auxetic plug 1, as shown in Figure 2, the sleeve The inner wall of 2 is provided with spiral groove 3.

Fig. 3 shows the specific structure of a common auxetic plug 1, which consists of a plug barrel 8 and a plug post 9, and the plug post 9 is provided with a screw hole.

The working principle of the utility model is as follows: first, the pull rod 4 is installed on the plunger 9 through the external thread 6 , and then the sleeve 2 is put on the periphery of the pull rod 4 until the sleeve 2 touches the plug tube 8 . The clamping part 5 is clamped on the riveting gun 7, and the plug post 9 is pulled by the force of the riveting gun 7 to realize the expansion or removal of the auxetic plug 1 .

Above-mentioned riveting gun 7 can be selected manual riveting gun, for example double riveting gun, also can select other electric or pneumatic riveting guns for use.

Claims (3)

1. hot forming tool water channel plug dismantling device, comprise pull bar (4), it is characterized in that: one end of described pull bar (4) is provided with the external screw thread (6) corresponding with the screw on stick harness (9), the other end is provided with diameter clamping part (5) that is less, that coordinate with hand riveter (7); The outer of described pull bar (4) is arranged with the sleeve (2) be slidably matched with pull bar (4), and the internal diameter of described sleeve (2) is less than the external diameter drawing swollen plug (1), and the inwall of described sleeve (2) is provided with helicla flute (3).

2. hot forming tool water channel plug dismantling device according to claim 1, is characterized in that: the length of described sleeve (2) is not less than 200mm.

3. hot forming tool water channel plug dismantling device according to claim 1, is characterized in that: described pull bar (4) is made up of Cr12MoV steel.