Expansion connecting and fixing structure for heavy punch guide rod of forming machine

Abstract

The utility model relates to the technical field of forming machines, and discloses a forming machine heavy punch guide rod expansion connection fixing structure which comprises a guide rod and a balance weight module, the guide rod and the balance weight module are detachably and fixedly connected, a vertical through hole is formed in the balance weight module, the guide rod penetrates into the through hole, the upper end of the guide rod is flush with the upper end of the through hole, and the balance weight module is fixedly connected with the guide rod. The lower end of the guide rod extends out of the through hole and extends downwards; the guide rod is sleeved with an expansion sleeve, the expansion sleeve is located in the through hole, and the expansion sleeve fixes the guide rod in the through hole; the expansion sleeve comprises an adjusting screw, and the adjusting end of the adjusting screw extends out of the through hole. By means of the guide rod fixing structure, the problems that according to an existing guide rod fixing structure, a pressure plate bolt and a cotter pin are prone to breakage, and a guide rod is prone to falling off can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of forming machines, in particular to an expansion connection and fixing structure of a heavy hammer guide rod of a forming machine. Background Art

[0002] The weight guide rod of a forming machine is a key component. Its primary function is to guide the vertical movement of the weight, ensuring that the weight can accurately and smoothly perform the impact or pressing operation. The design and performance of this guide rod directly affect the operating efficiency of the forming machine and the quality of the finished product.

[0003] The current fixing method of the hammer guide rod in the forming machine is as follows Figure 1 As shown, a blind hole is machined at the bottom of the heavy hammer counterweight, and the guide rod is inserted into the blind hole. The bottom of the counterweight is then tightened with a pressure plate bolt. At the same time, a blind hole is also machined in the vertical direction of the guide rod inserted into the counterweight, and a cotter pin is installed in the blind hole to fix the guide rod. However, when using this structure to fix the guide rod, since the molding machine is in a state of severe vibration during operation, the lower end of the guide rod will also vibrate frequently, causing the gap between the assembly surface of the guide rod and the counterweight to increase, which can easily cause the pressure plate bolt and cotter pin to break. Once broken, since the holes for installing the pressure plate bolt and cotter pin are both blind holes, the broken part will remain in the blind hole, making it difficult to remove it from the blind hole when repairing the equipment. In addition, if the heavy hammer guide rod falls off, it will also cause the heavy hammer to hit the mold when entering the mold, causing the molding machine to not operate safely and smoothly. Utility Model Content

[0004] The utility model aims to provide a forming machine heavy hammer guide rod expansion connection fixing structure to solve the problems of the existing guide rod fixing structure, such as the pressure plate bolt and the cotter pin are easy to break and the guide rod is easy to fall off.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a forming machine heavy hammer guide rod expansion connection and fixing structure, including a guide rod and a counterweight module, the guide rod and the counterweight module are detachably fixedly connected, a vertical through hole is provided on the counterweight module, the guide rod passes through the through hole, and the upper end of the guide rod is flush with the upper end of the through hole, and the lower end of the guide rod extends out of the through hole and extends downward; an expansion sleeve is provided on the guide rod, the expansion sleeve is located in the through hole, and the expansion sleeve fixes the guide rod in the through hole; the expansion sleeve includes an adjusting screw, and the adjusting end of the adjusting screw extends outside the through hole.

[0006] The principle and advantages of this solution are: in this solution, the guide rod is fixed in the through hole by using an expansion sleeve. During use, the guide rod can be expanded and fixed in the through hole by simply adjusting the adjustment screw, which makes it more convenient to fix the guide rod. Moreover, since traditional blind holes and cotter pins are not used for connection and fixation, there is no problem of cotter pins being easily broken and retained in the blind hole, which makes the fixing structure of the guide rod more stable, the guide rod is not easy to fall off, and it is safer to use.

[0007] Preferably, as an improvement, two groups of expansion sleeves are provided, the two groups of expansion sleeves are respectively located at the upper end and the lower end of the through hole, and the two groups of expansion sleeves are symmetrically distributed up and down.

[0008] Through the above scheme, the two sets of expansion sleeves have the function of stabilizing the connection of the guide rod and keeping the guide rod always in a vertical state, which can maintain the stability of the guide rod after installation and fixation, and prevent the guide rod from swinging. At the same time, the two sets of expansion sleeves further solidify the fixed connection relationship between the guide rod and the through hole, making the connection and installation of the guide rod more stable and the guide rod not easy to fall off.

[0009] Preferably, as an improvement, the guide rod is provided with a protrusion protruding from the surface of the guide rod; the inner wall of the through hole is provided with a card slot, and the protrusion is connected to the card slot by card engagement.

[0010] Through the above scheme, the snap-fitting cooperation between the protrusion and the slot is utilized to enhance the connection and fixing effect between the guide rod and the through-hole member, which is more conducive to the stable connection of the guide rod. Moreover, due to the design of the expansion sleeve, the expansion sleeve greatly reduces the force on the connection between the protrusion and the snap-fitting, making the protrusion less likely to be damaged, and in turn assisting the expansion sleeve in fixing the guide rod.

[0011] Preferably, as an improvement, a vertical sliding groove and a horizontal sliding hole are provided on the guide rod, and the sliding groove is communicated with the sliding hole; a control rod is slidably provided in the sliding groove; the protrusion is slidably provided in the sliding hole, and a wedge surface is provided at one end of the protrusion close to the sliding groove, and a wedge block is provided at the upper end of the control rod, and the wedge block matches and abuts against the wedge surface of the protrusion.

[0012] Through the above scheme, the slide groove is used for the sliding operating rod. When the guide rod is inserted into the through hole, the operating rod can be slid to allow the protrusion to slide into the slide hole, thereby not hindering the guide rod from entering the through hole and the expansion sleeve, thereby facilitating the installation of the guide rod. When the guide rod moves to the corresponding position of the through hole, the operating rod can be slid in the reverse direction to allow the wedge block to squeeze the wedge surface of the protrusion, thereby pushing the protrusion out of the slide hole. At this time, the protrusion enters the card slot and engages with the card slot, and limits and fixes the guide rod.

[0013] Preferably, as an improvement, a reset member is connected between the protrusion and the guide rod.

[0014] Through the above solution, the reset member can realize automatic reset of the protrusion, so that when the operating rod is driven to move the wedge block away from the protrusion, the protrusion can automatically slide into the sliding hole to facilitate the connection, installation and removal operations of the guide rod.

[0015] Preferably, as an improvement, a push handle is fixedly provided at the lower end of the joystick, one end of the push handle is connected to the joystick, and the other end is located outside the slide groove.

[0016] Through the above solution, the push handle can facilitate the sliding operation of the joystick, making the operation more convenient.

[0017] Preferably, as an improvement, the sliding grooves, sliding holes, operating rods, wedges, protrusions and slots are provided in a plurality of matching groups evenly distributed in a circular array around the axis of the guide rod.

[0018] Through the above scheme, the guide rod can be locked in multiple places in the circumferential direction by multiple sets of matching protrusions and grooves, so as to enhance the fixing effect of the guide rod while making the guide rod subjected to uniform and stable force, which is more conducive to keeping the guide rod fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the guide rod fixing structure in the prior art.

[0020] Figure 2 This is a schematic diagram of the fixing structure in Example 1 of the present utility model.

[0021] Figure 3 This is a schematic structural diagram of the expansion sleeve in Example 1 of the utility model.

[0022] Figure 4 It is a structural diagram of the inner ring or outer ring.

[0023] Figure 5 This is a schematic diagram of the guide rod fixing structure in Example 2 and Example 3 of the present invention, in which the expansion sleeve is omitted.

[0024] Figure 6 for Figure 5 Enlarged view of part A in the middle. DETAILED DESCRIPTION

[0025] The following is a detailed description of the present invention through specific embodiments, but the embodiments of the present invention are not limited thereto. Unless otherwise specified, the technical means used in the following embodiments are conventional means well known to those skilled in the art; the experimental methods used are conventional methods; and the materials and reagents used are all commercially available.

[0026] The figure marks in the drawings of the specification include: guide rod 1, counterweight module 2, pressure plate bolt 3, cotter pin 4, expansion sleeve 5, adjusting screw 6, outer pressure ring 7, outer ring 8, inner ring 9, inner pressure ring 10, protrusion 11, slot 12, slide groove 13, slide hole 14, joystick 15, wedge block 16, reset part 17, push handle 18.

[0027] Example 1

[0028] This embodiment Figure 2 As shown: The forming machine hammer guide rod expansion connection fixed structure includes a guide rod 1 and a counterweight module 2. The guide rod 1 and the counterweight module 2 are detachably fixedly connected. The detachable fixed connection is specifically achieved in the following manner:

[0029] A vertical through hole is provided on the counterweight module 2. The guide rod 1 is vertically inserted into the through hole, and the upper end of the guide rod 1 is flush with the upper end of the through hole. The lower end of the guide rod 1 extends out of the through hole and extends downward. A tightening sleeve 5 is provided on the guide rod 1. The tightening sleeve 5 is located in the through hole and tightens the guide rod 1 in the through hole. The structure of the tightening sleeve 5 is as follows: Figure 3 As shown, the expansion sleeve includes an adjusting screw 6, an outer pressure ring 7, an outer ring 8, an inner ring 9 and an inner pressure ring 10. The outer pressure ring 7 is used to press the end surface of the outer ring 8 to fix the outer ring 8, and the inner pressure ring 10 is used to press the end surface of the inner ring 9 to fix the inner ring 9. Figure 4 As shown, the outer ring 8 and the inner ring 9 are both discontinuous circular rings with a notch. The inner wall of the outer ring 8 and the outer wall of the inner ring 9 are matching and abutting wedge surfaces. The adjusting screw 6 passes through the outer pressure ring 7, the outer ring 8, the inner ring 9, and the inner pressure ring 10 in sequence. The adjusting end of the adjusting screw 6 is located on one side of the inner pressure ring 10, and the other end of the adjusting screw 6 is threadedly connected to the outer pressure ring 7. When the adjusting end of the adjusting screw 6 is rotated, the outer pressure ring 7 moves toward the inner pressure ring 10, causing the wedge surfaces of the inner ring 9 and the outer ring 8 to squeeze each other, thereby causing the inner ring 9 to shrink toward the center and the outer ring 8 to expand outward to tighten the guide rod 1 in the through hole. The adjusting end of the adjusting screw 6 in this embodiment extends outside the through hole to facilitate adjustment.

[0030] In addition, there are two groups of expansion sleeves 5 in this embodiment. The two groups of expansion sleeves 5 are respectively located at the upper end and the lower end of the through hole, and the two groups of expansion sleeves 5 are symmetrically distributed up and down.

[0031] During the specific implementation of this embodiment, when installing the guide rod 1, two sets of expansion sleeves 5 are placed at the upper and lower ends of the through hole, respectively. The guide rod 1 is then inserted into the through hole, and the adjusting end of the adjustment screw 6 is rotated so that the expansion sleeve 5 tightens and secures the guide rod 1 in the through hole. During use of the molding machine, when the fixing effect of the guide rod 1 needs to be adjusted, the adjustment screw 6 is simply rotated to make the adjustment. During use, the cotter pin 4 and pressure plate bolt 3 that are prone to breakage as in existing connection and fixing structures are eliminated. The guide rod 1 is also more easily disassembled and assembled, and the connection and fixation of the guide rod 1 are more stable, making it less likely for the guide rod 1 to fall off.

[0032] Example 2

[0033] This embodiment is based on embodiment 1. Figure 5 and Figure 6 As shown, the guide rod 1 is provided with a protrusion 11 protruding from the surface of the guide rod 1. A slot 12 is provided on the inner wall of the through hole, into which the protrusion 11 engages and is connected. Specifically, the guide rod 1 is provided with a vertical slot 13 and a transverse slot 14. The slot 13 communicates with the slot 14, and the end of the slot 14 away from the slot 13 is connected to the outside world. An operating lever 15 slides within the slot 13. The protrusion 11 slides within the slot 14, and a wedge surface is provided on the end of the protrusion 11 adjacent to the slot 13. A wedge 16 is welded and fixedly connected to the upper end of the operating lever 15. The wedge 16 matches and abuts the wedge surface of the protrusion 11. A reset member 17 is connected between the protrusion 11 and the guide rod 1. In this embodiment, the reset member 17 is a tension spring, which automatically resets the protrusion 11 and slides into the slot 14 after the wedge 16 moves away from the protrusion 11. A push handle 18 is welded and fixed to the lower end of the operating rod 15 . One end of the push handle 18 is connected to the operating rod 15 , and the other end is located outside the sliding groove 13 .

[0034] During the specific implementation of this embodiment, when the guide rod 1 needs to be installed, the push handle 18 is pushed so that the push handle 18 drives the operating rod 15 to slide in the slide groove 13 and the wedge 16 is moved away from the protrusion 11. The protrusion 11 enters the slide hole 14 under the influence of the reset member 17. At this time, the outer surface of the guide rod 1 is relatively flat, and the guide rod 1 can be inserted into the expansion sleeve 5 and the through hole to install the guide rod 1. When the guide rod 1 moves to the predetermined position, the push handle 18 is pushed in the opposite direction so that the push handle 18 drives the operating rod 15 to move, so that the operating rod 15 pushes the wedge 16 toward the protrusion 11. The wedge 16 squeezes the wedge surface of the protrusion 11, so that the protrusion 11 slides out of the slide hole 14 and is clamped into the clamping groove 12 to fix the guide rod 1, and then the expansion sleeve 5 is adjusted to fix the guide rod 1 in the through hole. In actual operation, the guide rod 1 can also be rotated to allow the protrusion 11 to find the clamping groove 12 and enter the clamping groove 12, and then the expansion sleeve 5 can be operated and expanded.

[0035] When the guide rod 1 needs to be removed, the push handle 18 is pushed to allow the protrusion 11 to withdraw from the slot 12 .

[0036] Of course, in actual application, it is easy to imagine that in the process of fixing the guide rod 1 by the protrusion 11 being engaged with the slot 12, in order to prevent the protrusion 11 from being disengaged from the slot 12, the push handle 18 or the joystick 15 can be fixed in position. The fixing method can be fixed by a lock or a snap, or a cylinder can be detachably fixed on the counterweight module 2 or directly on the guide rod 1 with bolts, and the cylinder rod of the cylinder is detachably fixed to the push handle 18 or the joystick 15 with bolts. When the guide rod 1 is installed, the cylinder is synchronously fixed to the counterweight module 2 or the guide rod 1, and the joystick 15 is driven and locked in position by the cylinder to prevent the joystick 15 and the push handle 18 from sliding freely in the chute 13 and affecting the effect of the protrusion 11 being engaged in the chute 12. This is a common operation used by those skilled in the art and will not be described in detail here. At the same time, a reset member 17 can also be connected between the joystick 15 and the chute 13 to facilitate the movement and reset of the joystick 15, which is more convenient for actual operation.

[0037] Example 3

[0038] In this embodiment, based on the above-mentioned embodiments, the sliding groove 13 , the sliding hole 14 , the operating rod 15 , the wedge 16 , the protrusion 11 and the clamping groove 12 are provided in a plurality of matching groups evenly distributed in a circular array around the axis of the guide rod 1 .

[0039] In actual application, the operation and use process of the multiple-group structure is as shown in Example 2. The multiple-group structure simultaneously limits and fixes the guide rod 1 in multiple directions, which not only disperses the vibration force borne by each protrusion 11, ensures the stability and performance of the structure, but also ensures that the guide rod 1 can be evenly and stably stressed after being connected and fixed, which is more conducive to preventing the guide rod 1 from falling off.

[0040] The above description is merely an embodiment of the present invention, and the commonly known specific technical solutions and / or features of the solution are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be considered as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed in this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. The forming machine hammer guide rod expansion connection fixed structure includes a guide rod and a counterweight module. The guide rod and the counterweight module are detachably fixedly connected, and are characterized by: A vertical through hole is provided on the counterweight module, the guide rod passes through the through hole, and the upper end of the guide rod is flush with the upper end of the through hole, and the lower end of the guide rod extends out of the through hole and extends downward; a tightening sleeve is provided on the guide rod, the tightening sleeve is located in the through hole, and the tightening sleeve fixes the guide rod in the through hole; the tightening sleeve includes an adjusting screw, and the adjusting end of the adjusting screw extends outside the through hole.

2. The forming machine weight guide rod expansion connection fixing structure according to claim 1, characterized in that: The expansion sleeves are provided in two groups, which are respectively located at the upper end and the lower end of the through hole, and the two groups of expansion sleeves are symmetrically distributed up and down.

3. The forming machine weight guide rod expansion connection fixing structure according to claim 2, characterized in that: The guide rod is provided with a protrusion protruding from the surface of the guide rod; the inner wall of the through hole is provided with a clamping groove, and the protrusion is clamped and connected with the clamping groove.

4. The forming machine weight guide rod expansion connection fixing structure according to claim 3, characterized in that: The guide rod is provided with a vertical sliding groove and a horizontal sliding hole, and the sliding groove is communicated with the sliding hole; a control rod is slidingly provided in the sliding groove; the protrusion is slidably provided in the sliding hole, and a wedge surface is provided at one end of the protrusion close to the sliding groove, and a wedge block is provided at the upper end of the control rod, which matches and abuts against the wedge surface of the protrusion.

5. The forming machine weight guide rod expansion connection fixing structure according to claim 4, characterized in that: A reset piece is connected between the protrusion and the guide rod.

6. The forming machine weight guide rod expansion connection fixing structure according to claim 5, characterized in that: A push handle is fixedly provided at the lower end of the operating rod, one end of the push handle is connected to the operating rod, and the other end is located outside the sliding groove.

7. The forming machine weight guide rod expansion connection fixing structure according to claim 6, characterized in that: The sliding grooves, sliding holes, operating rods, wedge blocks, protrusions and clamping grooves are provided in a plurality of groups that are matched and evenly distributed in a circular array around the axis of the guide rod.

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