A pump head assembly device and a method for assembling a pump head.

Abstract

A pump head assembly device is disclosed, comprising a template and a base, the template being fixedly connected to the base. The device further includes a floating tray with an inner bore and a support structure for supporting a toothed sleeve of the pump head; and a return spring supported between the floating tray and the base. The template comprises an upper part and a lower part, the outer diameter of the lower part being smaller than the inner diameter of the inner bore of the tray, allowing the lower part of the template to extend through the inner bore and be fixedly connected to the base. The outer diameter of the upper part of the template is larger than the inner diameter of the inner bore of the tray, thus abutting against the floating tray. The return spring is sleeved on the outer side of the lower part of the template. A method for assembling a pump head using this assembly device is also disclosed. This pump head assembly device and the method for assembling a pump head using it eliminate the need to replace the template midway, thus simplifying the pump head assembly process.

Description

Technical Field

[0001] This application relates to the field of product packaging, and more specifically to an assembly apparatus for assembling the head of a press pump mounted on a container, and a method for assembling the press pump head. Background Technology

[0002] Press pumps are widely used in product packaging in fields such as daily chemicals, food, and pharmaceuticals. They are installed on the mouth of containers that hold liquid or semi-liquid products to dispense the product for use. Press pumps typically consist of a pump head and a cylinder. The pump head includes components such as a pressure head, spring, toothed sleeve, cylinder plug, piston head, and piston rod.

[0003] In the manufacturing process of a push-pump pump, the pump head is typically assembled first, and then connected to the cylinder to complete the pump assembly. Therefore, the main step in the pump assembly process is the assembly of the pump head. Because the pump head has many components, the traditional assembly process is quite complex. Generally, when assembling the pump head, the cylinder head and piston are first pressed together using a first-type template. Next, a second-type template is used to press the piston and piston head together. Finally, a third-type template is used to complete the final assembly of the pump head.

[0004] Therefore, the traditional assembly process for push-pump heads requires the use of at least three templates, each with its corresponding base. Consequently, assembling push-pump heads is not only complex and inefficient, but also relatively costly.

[0005] In addition, to accommodate bottle necks of different sizes, the nozzle caps of the pump head are designed in various sizes, such as 24mm and 28mm diameter caps. Traditionally, different molds are used to assemble the caps to different sizes. During assembly, a mold of the appropriate size must be selected based on the size of the cap being used. Increasing the number of molds raises costs and also requires considerable space to store them.

[0006] Therefore, there is a need in the art for a newly designed pump head assembly device and a corresponding new pump head assembly method to overcome the problems existing in the prior art described above. Summary of the Invention

[0007] This application is made to address the problems of the prior art mentioned above. The purpose of this application is to provide a novel pump head assembly device that allows the use of only one template throughout the entire assembly process of the pump head, eliminating the need to change templates midway through assembly. Furthermore, the assembly device provided by this application is also applicable to braces of different sizes.

[0008] This application provides a pump head assembly device, which includes a template and a base, with the template fixedly connected to the base. Furthermore, the pump head assembly device also includes: a floating tray with an inner hole and a support structure formed therein for supporting the toothed sleeve of the pump head; and a return spring supported between the floating tray and the base. The template includes an upper part and a lower part. The outer diameter of the lower part is smaller than the inner diameter of the inner hole of the tray, allowing the lower part of the template to extend through the inner hole of the tray and be fixedly connected to the base. The outer diameter of the upper part of the template is larger than the inner diameter of the inner hole of the tray, thus abutting against the floating tray. The return spring is sleeved on the outer side of the lower part of the template.

[0009] The assembly device for the pump head is simple in structure and applicable to the entire process of assembling the pump head. It eliminates the need to change the template midway, thus simplifying the assembly process of the pump head.

[0010] In one specific structure, a lower sleeve is formed at the bottom of the template, and an inner hole is formed in the base. The lower sleeve can fit into the inner hole of the base to achieve a fixed connection between the template and the base.

[0011] Preferably, a horizontal plate is formed in the lower sleeve of the die. The position of the horizontal plate corresponds to the gate position of the die during molding, thus simplifying the molding process of the die.

[0012] Preferably, the floating tray includes an outer tray ring and an inner tray ring, with a support structure formed between the outer and inner tray rings. The support structure includes at least a first support portion and a second support portion. The first support portion is adjacent to the inner tray ring and is used to support a dental aligner of a first size. The second support portion is adjacent to the outer tray ring and is used to support a dental aligner of a second size, where the first size is smaller than the second size. This floating tray configuration allows for the use of dental aligners of different sizes, eliminating the need to change the template due to different aligner sizes, thus further simplifying the assembly of the pump head.

[0013] Preferably, an upper ring is formed on the upper part of the template, and the upper ring is configured to support the cylinder plug of the pump head during assembly. For example, the upper ring can support the flange of the cylinder plug.

[0014] Furthermore, an inner ring is provided inside the lower part of the template, which is configured to support the piston of the pump head during assembly. Specifically, the piston in the pump typically includes an outer piston ring and an inner piston ring, with a connecting web between them. During assembly, this connecting web is supported on the inner ring of the template. This achieves the positioning of the piston within the template.

[0015] Preferably, the upper ring of the template and the inner ring of the template are formed coaxially. This ensures that the cylinder plug, piston head, and piston are positioned coaxially during assembly.

[0016] Alternatively, the upper ring of the template is arranged coaxially with the support structure of the floating tray, thereby ensuring that the toothed cylinder is positioned coaxially with the cylinder plug, piston head and piston.

[0017] The invention also relates to a method for assembling a pump head, the pump head comprising a pressure head, a toothed sleeve, a cylinder plug, a piston, a piston head, and a resilient reset mechanism. The method for assembling the pump head uses the pump head assembly device described above and includes the following steps:

[0018] a) Place the piston into the template, so that the piston is supported on the inner ring of the template, which is formed inside the lower part of the template;

[0019] b) Place the piston head into the template and allow the lower end of the piston head to fall into the piston;

[0020] c) Place the cylinder plug into the template and support the cylinder plug on top of the template;

[0021] d) Place the braces onto the support structure of the floating tray;

[0022] e) Apply downward pressure to the top of the dental aligner to move the dental aligner downward relative to the cylinder plug, thereby connecting the dental aligner and the cylinder plug. The downward movement of the dental aligner causes the floating tray to move downward together and compresses the return spring, thereby reducing the height of the floating tray from the base from a first height to a second height.

[0023] f) When the pressure applied to the dental brace is removed, the floating tray moves upward under the restoring force of the return spring, and moves the dental brace and cylinder piston upward together, while the height of the floating tray from the base returns to the first height.

[0024] g) Place the elastic reset mechanism, with one end supported on the dental valve or cylinder plug;

[0025] h) Place the pressure head so that the inner sleeve of the pressure head passes through the elastic reset mechanism, and the outer sleeve of the pressure head and the upper ring of the dental aligner are interlocked.

[0026] i) Apply downward pressing force to the top of the pressure head so that the inner sleeve of the pressure head is connected to the piston head, and the piston head is assembled with the piston.

[0027] Preferably, during step i, under the action of the elastic reset mechanism, the dental sleeve and the cylinder plug also move downward together, and drive the floating tray to move downward until the cylinder plug is supported on the top of the template.

[0028] Preferably, in steps e and i, a pressing device is used to apply pressing force. This pressing device is, for example, a pneumatic compressor. Attached Figure Description

[0029] The accompanying drawings illustrate a non-limiting preferred embodiment of the invention, and the features and advantages of the invention become more apparent when viewed in conjunction with the drawings. Wherein:

[0030] Figure 1 A cross-sectional view of the push pump is shown.

[0031] Figure 2 It shows Figure 1 Anatomical view of the pump head of the pump.

[0032] Figure 3 A cross-sectional view of the assembled pump head is shown.

[0033] Figure 4 A front view of a brace with a first size is shown, which is, for example, a diameter of 24 mm.

[0034] Figure 5 A front view of a brace with a second size is shown, which is, for example, a diameter of 28 mm.

[0035] Figure 6 A cross-sectional view of the pump head assembly device for assembling a pump head according to this application is shown, wherein the pump head assembly device is in an assembled state.

[0036] Figure 7 It shows Figure 6 A sectional view of the pump head assembly.

[0037] Figures 8a-8i The steps of assembling a pump head using the pump head assembly device of this application are shown.

[0038] (Symbol Explanation)

[0039] 1. Press pump

[0040] 2. Press the pump head

[0041] 3 cylinders

[0042] 10 pressure heads

[0043] 11 Inner sleeve of pressure head

[0044] 12-head outer sleeve

[0045] 20 braces

[0046] 21 Braces on

[0047] 30 cylinder plug

[0048] 31 flange

[0049] 40 piston

[0050] 41 Piston Outer Ring

[0051] 42 Piston Inner Ring

[0052] 43 Connecting webs

[0053] 50 piston head

[0054] 60 Elastic Reset Mechanism

[0055] 100-press pump head assembly device

[0056] 110 reliable model

[0057] 111 Model on Circle

[0058] 112 Inner ring of the mold

[0059] 113 Lower sleeve of the template

[0060] 114 horizontal board

[0061] 120 floating pallet

[0062] 121 Tray Outer Ring

[0063] 122 tray inner ring

[0064] 123 First support unit

[0065] 124 Second branch

[0066] 125 tray inner hole

[0067] 130 base

[0068] 131 base inner hole

[0069] 140 return spring

[0070] 200 pressing device Detailed Implementation

[0071] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the embodiments shown in the drawings are merely preferred embodiments of the present invention and do not constitute a limitation on the scope of the present invention. Those skilled in the art can make various obvious modifications, variations, and equivalent substitutions to the present invention based on the embodiments shown in the drawings. Furthermore, without contradiction, the technical features in the different embodiments described below can be arbitrarily combined with each other, all of which fall within the protection scope of the present invention.

[0072] <Pump head>

[0073] Figure 1 A cross-sectional view of a press pump 1 is shown, wherein the press pump 1 includes a press pump head 2 and a cylinder 3 connected to the press pump head 2.

[0074] Figure 2 It shows Figure 1 Anatomical view of the pump head 2 of the pump 1. Figure 3 The diagram shows a cross-sectional view of the assembled pump head 2. The pump head 2 includes a pressure head 10, a toothed sleeve 20, a cylinder plug 30, a piston 40, a piston head 50, and a resilient reset mechanism 60. The specific structure of each component and their interconnection methods are described below.

[0075] The dental valve 20 and the cylinder plug 30 are connected together, for example, by means of snap-fit. A flange 31 is formed on the upper outer surface of the cylinder plug 30. When the cylinder plug 30 is connected to the dental valve 20, the flange 31 can limit the relative position between the cylinder plug 30 and the dental valve 20.

[0076] Braces 20 are available in various sizes, for example Figure 4 The braces shown are relatively small in size; for example, the maximum diameter can be 24mm. Figure 5 The braces shown are relatively large, for example, the maximum diameter can be 28mm.

[0077] The pressure head 10 includes an inner sleeve 11 and an outer sleeve 12 located outside the inner sleeve 11. The lower end of the inner sleeve 11 is connected to the piston head 50. For example, the piston head 50 can be sleeved on the lower end of the inner sleeve 11.

[0078] The piston 40 includes an outer piston ring 41, an inner piston ring 42, and a connecting web 43 connecting the outer piston ring 41 and the inner piston ring 42. The piston 40 is fitted onto the outside of the piston head 50, specifically, the inner piston ring 42 of the piston 40 is fitted onto the outside of the piston head 50.

[0079] The upper part of the dental brace 20 has a dental brace upper ring 21. In the installed state, the pressure head outer sleeve 12 of the pressure head 10 mates with the dental brace upper ring 21 of the dental brace 20, as shown in the figure, where the pressure head outer sleeve 12 is fitted outside the dental brace upper ring 21. Of course, in some structures of the pump head 2, the dental brace upper ring 21 of the dental brace 20 may also be fitted outside the pressure head outer sleeve 12 of the pressure head 10.

[0080] The pump head 2 also includes an elastic reset mechanism 60, which can be, for example, a plastic spring or a metal spring. The exemplary structure shown in the figure uses a plastic spring with an elastic strip.

[0081] One end of the elastic reset mechanism 60 (the lower end in the structure shown in the figure) is supported on the dental sleeve 20 or the cylinder plug 30, and the other end (the upper end shown in the figure) is supported on the pressure head 10. As the pressure head 10 reciprocates relative to the dental sleeve 20 in the up-down direction, the elastic reset mechanism 60 will be pressed or released.

[0082] <Pump Head Assembly Device>

[0083] Figure 6 A cross-sectional view of the pump head assembly device 100 for assembling the pump head 2 according to this application is shown, wherein the pump head assembly device 100 is in an assembled state. Figure 7 Another cross-sectional view of the pump head assembly 100 is shown, in which the components of the pump head assembly 100 are disassembled to show its structure more clearly.

[0084] The press pump head assembly 100 includes a template 110, a floating tray 120, a base 130, and a return spring 140. An upper template ring 111 is formed on the upper part of the template 110, while an inner template ring 112 is formed on its lower inner side. Preferably, the upper template ring 111 and the inner template ring 112 are formed coaxially.

[0085] A lower sleeve 113 is further formed below the inner ring 112 of the mold. Preferably, a horizontal plate 114 is also formed inside the lower sleeve 113, the position of which corresponds to the gate of the casting mold of the mold 110. In other words, the horizontal plate 114 is a structure formed at its gate during the molding of the mold 110, and therefore the horizontal plate 114 is a structure formed to facilitate the molding of the mold 110.

[0086] The floating tray 120 includes an outer tray ring 121 located on the outside and an inner tray ring 122 located on the inside, forming a support structure between the outer tray ring 121 and the inner tray ring 122. During the assembly of the pump head 2, the toothed sleeve 20 of the pump head 2 can be supported on this support structure.

[0087] Preferably, the support structure can have a larger width to accommodate different sizes of braces 20. For example, larger sizes of braces 20 (e.g. Figure 5 The 28mm aligner shown is close to the outer ring 121 of the tray when supported on the support structure, while the smaller aligner 20 (e.g.) Figure 4 The 24mm brace shown is close to the inner ring 122 of the tray when it rests on the support structure.

[0088] In the preferred structure shown in the figure, the support structure is formed in a stepped shape, thereby including a first support portion 123 and a second support portion 124, which are respectively suitable for a first size (e.g., 24 mm) brace 20 and a second size (e.g., 28 mm) brace.

[0089] In addition to the two-stage ladder shown in the figure, the support structure between the outer ring 121 and the inner ring 122 of the tray can also form a three-stage or more-stage ladder structure, thereby accommodating more sizes and types of braces 20.

[0090] An inner tray hole 125 is formed inside the inner ring 122 of the floating tray 120. The outer diameter of the template 110, including the lower part of the template lower sleeve 113, is smaller than the inner diameter of the inner tray hole 125, so that it can pass through the inner tray hole 125. Furthermore, at least the outer diameter of the template upper ring 111 of the template 110 is larger than the inner diameter of the inner tray hole 125, so that the template upper ring 111 of the template 110 abuts against the inner ring 122 of the floating tray 120.

[0091] The base 130 has an inner hole 131. After passing through the inner hole 125 of the floating tray 120, the lower sleeve 113 of the template of the floating tray 120 fits into the inner hole 131 of the base, so that the template 110 is fixedly connected to the base 130.

[0092] The return spring 140 is sleeved on the outside of the template 110 and supported between the floating tray 120 and the base 130.

[0093] Preferably, in the assembled state, the upper ring 111 of the template 110 and the support structure of the floating tray 120 are arranged coaxially.

[0094] Assembly process of the pump head

[0095] Figures 8a-8i The steps for assembling a pump head 2 using the pump head assembly device 100 of this application are shown.

[0096] First, such as Figure 8aAs shown, the piston 40 is placed inside the template 110 of the press pump head assembly 100, and the piston 40 abuts against the inner ring 112 of the template. Specifically, the connecting web 43 of the piston 40 rests against the top of the inner ring 112 of the template.

[0097] Next, as Figure 8b As shown, the piston head 50 is placed inside the template 110, so that the lower end of the piston head 50 falls into the piston inner ring 42 of the piston 40.

[0098] Then, as Figure 8c As shown, the cylinder plug 30 is placed in the template 110, so that the flange 31 of the cylinder plug 30 is supported on the upper end surface of the template upper ring 111 of the template 110.

[0099] After placing the cylinder plug 30, the cylinder head 20 is placed on the floating tray 120, with the lower end of the cylinder head 20 supported on the support structure of the floating tray 120. Figure 8d In the example shown, the aligner 20 is a larger aligner, supported on the second support 124 and positioned near the outer ring 121 of the floating tray 120. Of course, as mentioned above, when the aligner 20 is a smaller aligner, it is supported on the first support 123 and positioned near the inner ring 122 of the floating tray 120.

[0100] As described above, the upper ring 111 and the inner ring 112 of the template 110 are formed to be coaxial, and the template 110 and the floating tray 120 are also set to be coaxial after assembly. Therefore, after placement, the toothed brace 20, cylinder plug 30, piston 40 and piston head 50 can be coaxially positioned.

[0101] Then, a downward pressing force is applied to the top of the dental aligner 20, causing the dental aligner 20 to move downward relative to the cylinder plug 30, completing the engagement connection between the dental aligner 20 and the cylinder plug 30. During this process, the floating tray 120 also moves downward under the pressure of the dental aligner 20, thereby compressing the return spring 140, and the height of the floating tray 120 from the base 130 is adjusted. Figures 8a-8d The first height H1 in the middle decreases to Figure 8e The second height H2 is shown in the figure.

[0102] The pressing process can be performed using a pressing device 200, such as a pneumatic compressor. Those skilled in the art will recognize that the pressing device 200 can also be other types of devices, as long as they can apply downward pressure from the top of the braces 20. Furthermore, the pressing device 200 is also optional, allowing the braces 20 to be pressed manually by an operator, which is also within the scope of this application.

[0103] After pressing down on the dental valve 20 to connect it to the cylinder plug 30, the pressure applied to the dental valve 20 is released. At this time, as... Figure 8f As shown, the restoring force of the return spring 140 causes the floating tray 120 to move upward, which in turn drives the dental valve 20 and the connected cylinder piston 30 to move upward together. The height of the floating tray 120 from the base 130 returns from the second height H2 to the first height H1.

[0104] Next, the elastic reset mechanism 60 is positioned such that one end (e.g., the lower end) is supported on the dental brace 20 or the cylinder plug 30, for example in... Figure 8g The image exemplarily shows the lower end of the resilient reset mechanism 60 supported on the cylinder piston 30.

[0105] After placing the elastic reset mechanism 60, place the pressure head 10, as follows. Figure 8h As shown, specifically, the inner sleeve 11 of the pressure head 10 passes through the elastic reset mechanism 60 and is partially inserted into the piston head 50. The other end of the elastic reset mechanism 60 (for example, the upper end shown in the figure) is supported on the pressure head 10, and the outer sleeve 12 of the pressure head 10 and the upper ring 21 of the dental sleeve 20 are interlocked.

[0106] Finally, a downward pressing force is applied to the top of the pressure head 10. During this process, under the action of the elastic reset mechanism 60, the cylinder piston 30 moves downward together with the toothed sleeve 20 until the flange 31 of the cylinder piston 30 abuts against the upper ring 111 of the template 110. At this time, the height of the floating tray 120 from the base 130 decreases from the first height H1 to the second height H2, as... Figure 8i As shown. After the flange 31 of the cylinder piston 30 abuts against the upper ring 111 of the template 110, the press head 10 is pressed down further, so that the lower end of the inner sleeve 11 of the press head 10 is assembled with the piston head 50, and at the same time the piston 40 and the piston head 50 are also assembled together.

[0107] At this point, the pump head 2 of the pump 1 is assembled. Afterward, simply connecting the cylinder 3 to the cylinder plug 30 completes the assembly of the pump 1.

[0108] As can be seen from the assembly process of the pump head 2 described above, only one pump head assembly device 100 is needed to complete the assembly of the pump head 2, without the need to change the mold midway. The pump head assembly device 100 has a simple structure and allows for simple design, such as designing the structure of the floating tray 120 to suit different sizes of dental braces.

[0109] The structure of the pump head assembly device 100 of this application and the steps for assembling the pump head 2 using the pump head assembly device 100 have been described in detail above. Those skilled in the art will recognize that various obvious modifications, variations, and recombinations can be made based on the above disclosure, and these are all within the scope of this application.

Claims

1. A pump head assembly device, the pump head assembly device comprising a template and a base, the template being fixedly connected to the base, characterized in that, The pump head assembly also includes: A floating tray having an inner bore and a support structure formed therein for supporting the toothed sleeve of the pump head; and A reset spring, which is supported between the floating tray and the base; The template includes an upper part and a lower part. The outer diameter of the lower part is smaller than the inner diameter of the inner hole of the tray, so that the lower part of the template can extend through the inner hole of the tray and be fixedly connected to the base. The outer diameter of the upper part of the template is larger than the inner diameter of the inner hole of the tray, so that it abuts against the floating tray. The return spring is sleeved on the outer side of the lower part of the template; The upper part of the template has an upper template ring, which is configured to support the cylinder plug of the pump head during assembly. The lower part of the template has an inner template ring, which is configured to support the piston of the pump head during assembly. Wherein, the upper ring of the template and the inner ring of the template are formed coaxially; and / or the upper ring of the template and the support structure are arranged coaxially.

2. The pump head assembly device as described in claim 1, characterized in that, A lower sleeve is formed at the lower part of the template, and an inner hole is formed in the base. The lower sleeve can fit into the inner hole of the base to achieve a fixed connection between the template and the base.

3. The pump head assembly device as described in claim 2, characterized in that, A horizontal plate is formed in the lower sleeve of the template.

4. The pump head assembly device as described in claim 1, characterized in that, The floating tray includes an outer tray ring and an inner tray ring, and the support structure is formed between the outer tray ring and the inner tray ring. The support structure includes at least a first support portion and a second support portion. The first support portion is adjacent to the inner tray ring and is used to support a dental aligner with a first size. The second support portion is adjacent to the outer tray ring and is used to support a dental aligner with a second size. The first size is smaller than the second size.

5. A method for assembling a press pump head, the press pump head comprising a pressure head, a toothed sleeve, a cylinder plug, a piston, a piston head, and an elastic reset mechanism, characterized in that, The method for assembling the pump head uses the pump head assembly device as described in claim 1, and includes the following steps: a) Place the piston into the template, such that the piston is supported on the inner ring of the template, the inner ring being formed inside the lower part of the template; b) Place the piston head into the template and allow the lower end of the piston head to fall into the piston; c) Place the cylinder plug into the template and support the cylinder plug on top of the template; d) Place the dental brace onto the support structure of the floating tray; e) Apply a downward pressing force to the top of the dental aligner to move the dental aligner downward relative to the cylinder plug, thereby establishing a connection between the dental aligner and the cylinder plug. The downward movement of the dental aligner causes the floating tray to move downward together and compresses the return spring, thereby reducing the height of the floating tray from the base from a first height to a second height. f) When the pressure applied to the dental brace is removed, the floating tray moves upward under the restoring force of the return spring, and moves the dental brace and the cylinder piston upward together, while the height of the floating tray from the base returns to the first height; g) Position the elastic reset mechanism such that one end of it is supported on the dental brace or the cylinder plug; h) Place the pressure head such that the inner sleeve of the pressure head passes through the elastic reset mechanism, and the outer sleeve of the pressure head is fitted onto the upper ring of the dental brace. i) Apply a downward pressing force to the top of the pressure head, such that the inner sleeve of the pressure head is connected to the piston head, and the piston head is assembled with the piston.

6. The method for assembling the pump head as described in claim 5, characterized in that, During step i, under the action of the elastic reset mechanism, the dental brace and the cylinder plug also move downward together, and drive the floating tray to move downward until the cylinder plug is supported on the top of the template.

7. The method for assembling a press pump head as described in claim 5 or 6, characterized in that, In steps e and i, the pressing device is used to apply the pressing force.

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